C++：作业1

使用函数重载，实现不同数据类型的交换

#include 

using namespace std;

void fun(int &a , int &b)
{
    int temp = 0;
    temp = a;
    a = b;
    b = temp;
}

void fun(double &a , double &b)
{
    double temp = 0;
    temp = a;
    a = b;
    b = temp;
}

void fun(char &a , char &b)
{
    char temp = '0';
    temp = a;
    a = b;
    b = temp;
}


void fun(string &a , string &b)
{
    string temp = " ";
    temp = a;
    a = b;
    b = temp;
}


int main()
{
    int i1 = 1;
    int i2 = 2;
    double d1 = 1.111;
    double d2 = 2.222;
    char c1 = 'a';
    char c2 = 'b';
    string str1 = "hello";
    string str2 = "world";
    fun(i1,i2);
    fun(d1,d2);
    fun(c1,c2);
    fun(str1,str2);

    cout << "i1 = " << i1 <<" i2 = " << i2 << endl;
    cout << "d1 = " << d1 <<" d2 = " << d2 << endl;
    cout << "c1 = " << c1 <<" c2 = " << c2 << endl;
    cout << "str1 = " << str1 <<" str2 = " << str2 << endl;
    return 0;
}

运行结果: