这篇教程C++ 实例 - 交换两个数写得很实用，希望能帮到您。
以下我们使用两种方法来交换两个变量：使用临时变量与不使用临时变量。 实例 - 使用临时变量#include <iostream>using namespace std; int main(){ int a = 5, b = 10, temp; cout << "交换之前：" << endl; cout << "a = " << a << ", b = " << b << endl; temp = a; a = b; b = temp; cout << "/n交换之后：" << endl; cout << "a = " << a << ", b = " << b << endl; return 0;} 以上程序执行输出结果为： 交换之前：a = 5, b = 10交换之后：a = 10, b = 5 实例 - 不使用临时变量#include <iostream>#include <iostream>using namespace std; int main(){ int a = 5, b = 10; cout << "交换之前：" << endl; cout << "a = " << a << ", b = " << b << endl; a = a + b; b = a - b; a = a - b; cout << "/n交换之后：" << endl; cout << "a = " << a << ", b = " << b << endl; return 0;} 以上程序执行输出结果为： 交换之前：a = 5, b = 10交换之后：a = 10, b = 5
C++ 实例 - 查看 int, float, double 和 char 变量大小
C++ 实例 - 判断一个数是奇数还是偶数 |
