指针判断大小的程序

[simoun]

main()
{
	int num_1,num_2;
	int * num1_p=&num1,* num2_p=&num2,* pointer; //定义指针并赋值
	printf("input1:");
	scanf("%d",num1_p);
	printf("input2:");
	scanf("%d",num2_p);
	printf("num1=%d,num2=%d\n",num1,num2);
	if(*num1_p>*num2_p)
	{
		pointer=num1_p;num1_p=num2_p;num2_p=pointer;
	}
	printf("min=%d,max=%d\n",*num1_p,*num2_p);
}

这个程序运行时出错，可是我不知道问题在哪里，希望大虾们帮忙看看给些指点，谢谢了

[youjianwanlei]

scanf("%d",num1_p);

scanf("%d",num2_p);

这里吗/
我怎么看起来不象啊

[windowsxp0925]

main()
{
    int num1,num2;
    int * num1_p=&num1,* num2_p=&num2,* pointer; //定义指针并赋值
    printf("input1:");
    scanf("%d",num1_p);
    printf("input2:");
    scanf("%d",num2_p);
    printf("num1=%d,num2=%d\n",num1,num2);
    if(*num1_p>*num2_p)
    {
        pointer=num1_p;num1_p=num2_p;num2_p=pointer;
    }
    printf("min=%d,max=%d\n",*num1_p,*num2_p);
}

[windowsxp0925]

[Quote=引用楼主 simoun 的帖子:]
C/C++ codemain()
{intnum_1,num_2;int*num1_p=&num1,*num2_p=&num2,*pointer;//定义指针并赋值printf("input1:");
scanf("%d",num1_p);
printf("input2:");
scanf("%d",num2_p);
printf("num1=%d,num2=%d\n",num1,num2);if(*num1_p>*num2_p)
{
pointer=num1_p;num1_p=num2_p;num2_p=pointer;
}
printf("min=%d,max=%d\n",*num1_p,*num2_p);
}
这个程序运行时出错，可是我不知道问题在哪里…
[/Quote]

还运行出错，你编译时就应该出错了吧，你看看申明时写的是num_1，下面使用时写的是num1

[youjianwanlei]

int * num1_p=&num1,* num2_p=&num2,* pointer;

可以这样吗?
是不是要先赋直给变量
在把指针指着他啊?

[yrwx001]

int main(int argc, char* argv[])
{
    int num_1,num_2;
    int * num1_p=&num_1,* num2_p=&num_2,* pointer; //定义指针并赋值
    printf("input1:");
    scanf("%d",num1_p);
    printf("input2:");
    scanf("%d",num2_p);
    printf("num1=%d,num2=%d\n",num_1,num_2);
    if(*num1_p>*num2_p)
    {
        pointer=num1_p;num1_p=num2_p;num2_p=pointer;
    }
    printf("min=%d,max=%d\n",*num1_p,*num2_p);
	return 0;
}
//你原来程序中，num1,num2没有定义

[problc]

main()
{
int num_1,num_2;
int * num1_p=&num1,* num2_p=&num2,* pointer; //定义指针并赋值
printf("input1:");
scanf("%d",num1_p);
printf("input2:");
scanf("%d",num2_p);
printf("num1=%d,num2=%d\n",num1,num2);
if(*num1_p>*num2_p)
{
pointer=num1_p;num1_p=num2_p;num2_p=pointer;
}
printf("min=%d,max=%d\n",*num1_p,*num2_p);
}

是编译出错吧。。。变量写错了。。。

[fireyou]

编译都不会过，变量名字不对

[magipan]

应该就是变量名写错的问题了