程序如下
#include
using namespace std;
void swap(int a, int b) //定义swap函数,带有两个整形参数a,b
{
int c;
cout << “swap函数中,交换前 a=” << a << “b=” << b << endl;
c = a;
a = b;
b = c;
cout << “swap函数中,交换后 a=” << a << “b=” << b << endl;
}
int main()
{
int a = 3, b = 7;
cout << “程序中,交换前 a=” << a << “b=” << b << endl;
swap(a, b); //调用swap函数,为了交换a,b的值
cout << “程序中,交换后 a=” << a << “b=” << b << endl;
system(“pause”);
return 0;
}