sairate
fa9377e4ae
- 新增现代 C++ 教程的 Preface 章节，包括英文和中文版本 - 添加 C++ Primer 练习代码 - 新增 Learn C++ 教程的 C++ 开发简介章节 - 添加头文件解析文档 - 更新 mkdocs.yml，包含新教程的目录结构 - 修改项目设置，使用 Python 3.10环境
427 lines
9.7 KiB
Plaintext
427 lines
9.7 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# C++的调用其他类"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# 1. 类中有其他的类"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"#include <iostream>\n",
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"using namespace std;\n",
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"\n",
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"//点和圆关系案例\n",
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"\n",
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"//点类\n",
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"class Point\n",
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"{\n",
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"public:\n",
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" //设置x\n",
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" void setX(int x)\n",
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" {\n",
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" m_X = x;\n",
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" }\n",
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" //获取x\n",
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" int getX()\n",
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" {\n",
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" return m_X;\n",
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" }\n",
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" //设置y\n",
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" void setY(int y)\n",
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" {\n",
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" m_Y = y;\n",
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" }\n",
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" //获取y\n",
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" int getY()\n",
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" {\n",
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" return m_Y;\n",
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" }\n",
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"\n",
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"private:\n",
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" int m_X;\n",
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" int m_Y;\n",
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"};\n",
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"\n",
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"//圆类\n",
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"class Circle\n",
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"{\n",
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"public:\n",
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" //设置半径\n",
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" void setR(int r)\n",
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" {\n",
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" m_R = r;\n",
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" }\n",
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" //获取半径\n",
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" int getR()\n",
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" {\n",
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" return m_R;\n",
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" }\n",
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" //设置圆心\n",
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" void setCenter(Point center)\n",
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" {\n",
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" m_Center = center;\n",
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" }\n",
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" //获取圆心\n",
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" Point getCenter()\n",
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" {\n",
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" return m_Center;\n",
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" }\n",
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"private:\n",
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" int m_R; //半径\n",
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" Point m_Center; //圆心 //在类中可以让另一个类 作为本类中的成员\n",
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"};\n",
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"\n",
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"//判断点和圆关系\n",
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"void isInCircle(Circle& c, Point& p)\n",
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"{\n",
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" //计算两点之间距离 平方\n",
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" int distance =\n",
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" (c.getCenter().getX() - p.getX()) * (c.getCenter().getX() - p.getX()) +\n",
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" (c.getCenter().getY() - p.getY()) * (c.getCenter().getY() - p.getY()); //c.getCenter()返回的是圆心点center类\n",
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" //可以调用圆心点center类中的方法\n",
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"\n",
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" //计算半径的平方\n",
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" int rDistance = c.getR() * c.getR();\n",
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"\n",
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" //判断关系\n",
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" if (distance == rDistance)\n",
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" {\n",
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" cout << \"点在圆上\" << endl;\n",
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" }\n",
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" else if (distance > rDistance)\n",
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" {\n",
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" cout << \"点在圆外\" << endl;\n",
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" }\n",
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" else\n",
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" {\n",
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" cout << \"点在圆内\" << endl;\n",
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" }\n",
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"}\n",
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"\n",
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"int main()\n",
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"{\n",
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" //创建圆\n",
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" Circle c;\n",
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" c.setR(10);\n",
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" Point center;\n",
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" center.setX(10); //设置点的横坐标\n",
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" center.setY(0); //设置点的纵坐标\n",
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" c.setCenter(center); //设置点类传入圆类\n",
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"\n",
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" //创建点\n",
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" Point p;\n",
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" p.setX(10);\n",
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" p.setY(10);\n",
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"\n",
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" //判断关系\n",
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" isInCircle(c, p);\n",
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"\n",
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" system(\"pause\");\n",
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"\n",
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" return 0;\n",
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"\n",
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"}"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"运行结果: \n",
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" - 点在圆上 \n",
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" - 请按任意键继续. . ."
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# 2. 导入其他文件的类"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## 2.1 point.h头文件"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"//这是point.h头文件\n",
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"\n",
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"#pragma once //防止头文件重复包含，防止头文件冲突\n",
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"#include <iostream> //标准输入输出\n",
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"using namespace std; //标准命名空间\n",
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"\n",
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"//只要函数声明、变量声明\n",
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"//成员函数只需要声明就好了，末尾有分号。\n",
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"class Point\n",
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"{\n",
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"public:\n",
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" //设置x\n",
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" void setX(int x);\n",
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"\n",
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" //获取x\n",
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" int getX();\n",
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"\n",
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" //设置y\n",
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" void setY(int y);\n",
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"\n",
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" //获取y\n",
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" int getY();\n",
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"\n",
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"\n",
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"private:\n",
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" int m_X;\n",
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" int m_Y;\n",
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"};"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## 2.2 point.cpp源文件"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"//这是point.cpp源文件\n",
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"#include \"point.h\"\n",
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"\n",
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"//定义函数时，要加上作用域，\"双冒号::\"表示Point作用域下的函数\n",
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"void Point::setX(int x)\n",
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"{\n",
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" m_X = x;\n",
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"}\n",
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"//获取x\n",
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"int Point::getX()\n",
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"{\n",
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" return m_X;\n",
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"}\n",
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"//设置y\n",
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"void Point::setY(int y)\n",
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"{\n",
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" m_Y = y;\n",
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"}\n",
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"//获取y\n",
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"int Point::getY()\n",
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"{\n",
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" return m_Y;\n",
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"}"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## 2.3 circle.h头文件"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"#pragma once \n",
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"#include <iostream> //标准输出流\n",
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"using namespace std; //标准命名空间\n",
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"#include \"Point.h\" //一个类中用到另一个类，把另一个类包含的头文件包含进来\n",
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"\n",
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"//圆类\n",
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"class Circle\n",
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"{\n",
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"public:\n",
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" //设置半径\n",
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" void setR(int r);\n",
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"\n",
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" //获取半径\n",
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" int getR();\n",
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"\n",
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" //设置圆心\n",
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" void setCenter(Point center);\n",
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"\n",
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" //获取圆心\n",
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" Point getCenter();\n",
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"\n",
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"private:\n",
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" int m_R; //半径\n",
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" Point m_Center; //圆心 //在类中可以让另一个类 作为本类中的成员\n",
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"};"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## 2.4 circle.cpp头文件"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"//这是circle.cpp头文件\n",
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"\n",
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"#include \"circle.h\"\n",
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"\n",
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"//设置半径\n",
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"void Circle::setR(int r)\n",
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"{\n",
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" m_R = r;\n",
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"}\n",
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"\n",
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"//获取半径\n",
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"int Circle::getR()\n",
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"{\n",
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" return m_R;\n",
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"}\n",
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"\n",
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"//设置圆心\n",
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"void Circle::setCenter(Point center)\n",
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"{\n",
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" m_Center = center;\n",
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"}\n",
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"\n",
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"//获取圆心\n",
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"Point Circle::getCenter()\n",
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"{\n",
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" return m_Center;\n",
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"}"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## 2.5 main.cpp文件"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"//这个是主文件 .cpp文件\n",
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"\n",
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"#include <iostream>\n",
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"using namespace std;\n",
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"#include \"circle.h\" //想用点类，就要包含点类的头文件\n",
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"#include \"point.h\" //想用圆类，就要包含点类的头文件\n",
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"\n",
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"\n",
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"//判断点和圆关系\n",
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"void isInCircle(Circle& c, Point& p)\n",
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"{\n",
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" //计算两点之间距离 平方\n",
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" int distance =\n",
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" (c.getCenter().getX() - p.getX()) * (c.getCenter().getX() - p.getX()) +\n",
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" (c.getCenter().getY() - p.getY()) * (c.getCenter().getY() - p.getY()); //c.getCenter()返回的是圆心点center类\n",
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" //可以调用圆心点center类中的方法\n",
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"\n",
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" //计算半径的平方\n",
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" int rDistance = c.getR() * c.getR();\n",
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"\n",
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" //判断关系\n",
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" if (distance == rDistance)\n",
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" {\n",
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" cout << \"点在圆上\" << endl;\n",
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" }\n",
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" else if (distance > rDistance)\n",
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" {\n",
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" cout << \"点在圆外\" << endl;\n",
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" }\n",
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" else\n",
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" {\n",
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" cout << \"点在圆内\" << endl;\n",
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" }\n",
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"}\n",
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"\n",
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"int main()\n",
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"{\n",
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" //创建圆\n",
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" Circle c;\n",
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" c.setR(10);\n",
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" Point center;\n",
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" center.setX(10); //设置点的横坐标\n",
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" center.setY(0); //设置点的纵坐标\n",
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" c.setCenter(center); //设置点类传入圆类\n",
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"\n",
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" //创建点\n",
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" Point p;\n",
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" p.setX(10);\n",
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" p.setY(10);\n",
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" \n",
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" //判断关系\n",
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" isInCircle(c, p);\n",
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"\n",
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" system(\"pause\");\n",
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"\n",
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" return 0;\n",
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"\n",
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"}"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3.6.3",
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"language": "python",
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"name": "python3.6.3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"base_numbering": 1,
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"nav_menu": {},
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"number_sections": false,
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"sideBar": true,
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"skip_h1_title": false,
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"title_cell": "Table of Contents",
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"title_sidebar": "Contents",
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"toc_cell": false,
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"toc_section_display": true,
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"nbformat_minor": 4
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