#include <iostream.h>
void fun(int *a, int *b) {
int *k;
k = a;
a = b;
b = k;
}
void main( ) {
int a = 3, b = 6, *x = &a, *y = &b;
fun(x, y);
cout << "No.1:" << a << "," << b << " ";
fun(&a, &b);
cout << "No.2:" << a << "," << b << endl;
} 输出:1
