编写程序，输入两个数，交换它们的值，并输出交换后的数；
#include"stdio.h"
void main()
{
    int a,b,temp;
    printf("please enter two int\n");
    scanf("&d%d",&a,&b);
    printf("before changed a=%d b=%d\n",a,b);
    temp=a;
    a=b;
    b=temp;
    printf("after changed a=%d b=%d\n",a,b);
}

void main()
{
    int a,b,temp;
    printf("please enter two int\n");
    scanf("&d%d",&a,&b);                     --------------------》自己去看 %d是合格的
    printf("before changed a=%d b=%d\n",a,b);
    temp=a;
    a=b;
    b=temp;
    printf("after changed a=%d b=%d\n",a,b);
}

谢谢

#include"stdio.h"
void main()
{
    int a,b,temp;
    printf("please enter two int\n");
    scanf("&d%d",&a,&b);--------------------应改成scanf("%d%d",&a,&a)
    printf("before changed a=%d b=%d\n",a,b);
    temp=a;
    a=b;
    b=temp;
    printf("after changed a=%d b=%d\n",a,b);
}

传说中的马大哈就是楼主了  哪怕你用2个& 保持前后一致  错的也算靠谱

scanf("%d%d",&a,&b);

呵呵   小错误啦    注意  注意  

艾玛。。。。。%和取地址符&不是很像哦。仔细哦

仔细点就能避免这种错误了