98
swap() 交换两个数
#include <stdio.h>
void swap(int *x, int *y)//传入指针
{
int tmp;
tmp = *x;
*x = *y;
*y = tmp;
}
int main()
{
int a = 3;
int b = 5;
printf("a = %d, b = %d\n", a, b);
swap(&a, &b);
printf("a = %d, b = %d\n", a, b);
return 0;
}
最后更新：2017-04-03 16:48:53