编辑代码

#include <stdio.h>
int main ()
{
    int x=99;
    int y=22;
    int temp;
    printf("交换前x,y值为\n",x,y);
    printf("x=%d\n",x);
    printf("y=%d\n",y);
    temp=x;
    x=y;
    y=temp;
    printf("交换后x,y值为\n",x,y);
    printf("x=%d\ny=%d\n",x,y);
    scanf("%d%d",&x,&y);
    return 0;
}