program_6_12.cpp

c++程序设计讲义 cppprograming 含源码

// program 6.12: Function overloading
#include <iostream>
using namespace std;
void Swap(int &x, int &y) {
    int tmp = x;
    x = y;
    y = tmp;
}
void Swap(double &x, double &y) {
    double tmp = x;
    x = y;
    y = tmp;
}
int main() {
    int a = 10;
    int b = 100;
    cout << "int version of Swap() is invoked:" << endl;
    Swap(a, b);
    cout << "a = " << a << ", b = " << b << endl;
    
    double m = 3.14159;
    double n = 31415.9265;
    cout << "double version of Swap() is invoked:" << endl;
    Swap(m, n);
    cout << "m = " << m << ", n = " << n << endl;
    return 0;
}