#include <iostream>
#include <string>


template<typename T>
void swapValue(T & a, T & b) {
    T temp = a; 
    a = b;
    b = temp;
}

void swapValue(float & a, float & b) {
    float temp = a; 
    a = b;
    b = temp;
}

void swapValue(char & a, char & b) {
    char temp = a; 
    a = b;
    b = temp;
}

void swapValue(string & a, string & b) {
    string temp = a; 
    a = b;
    b = temp;
}
int main() {

    int a = 10, b = 20;
    swapValue(a, b);
    std::cout << "交换后：a=" << a << ", b=" << b << std::endl; 


    float c = 3.14, d = 6.28;
    swapValue(c, d);
    std::cout << "交换后：c=" << c << ", d=" << d << std::endl;  // 输出：c=6.28, d=3.14

    char e = 'A', f = 'B';
    swapValue(e, f);
    std::cout << "交换后：e=" << e << ", f=" << f << std::endl;  // 输出：c=6.28, d=3.14



    return 0;
}

—— 本文来自火龙信奥（义乌睿码科技）：义乌青少年信息学奥赛与编程教育平台，专注 CSP-J/S、NOIP、GESP 竞赛培训，线上线下融合教学，助力编程升学。网址：hlcoding.com