我写了一个程序,大家帮我看看哪里有问题
// test5.4.cpp : demonstrates passing by value#include "stdafx.h"
#include "iostream"
using namespace std;
void swap(int x, int y);
int main()
{
int x = 5,y = 10;
cout <<"Main.Before swap, x: "<< x <<" y: "<< y << endl;
swap(x,y);
cout <<"Main.After swap, x: "<< x <<" y: "<< y << endl;
return 0;
}
void swap(int x, int y)
{
int temp;
cout <<"Swap.Before swap,x: "<< x <<" y: "<< y << endl;
temp = x;
x = y;
y = temp;
cout <<"Swap.After swap,x: "<< x <<" y: "<< y << endl;
}