为什么while循环执行不了，菜鸟很懵逼

[向阳森]

#include <stdio.h>
int main(void) {
int number, min, max, count, sum,status;
sum = 0;
count = 0;
printf("Enter lower and upper integer limits:");
scanf_s("%d %d", &min, &max);
status= (scanf_s("%d %d", &min, &max)==2);
while (status) {
for (number = min;min <= number <= max;number++) {
count = number * number;
sum += count;
}
printf("The sums of the squares from %d to %d is %d", min*min, max*max, sum);
printf("Enter next set of limits :");
scanf_s("%d %d", &min, &max);
}
printf("Done");
return 0;
}

[qybao]

执行不了还好，要是执行了就死循环了
while (status) //循环里没有改变status的处理，一旦进入循环就死循环了

执行不了说明你输入不对
status= (scanf_s("%d %d", &min, &max)==2);
所以status为false
根据的你的代码，你要输入两次数据才行
scanf_s("%d %d", &min, &max); //这里需要输入一次
status= (scanf_s("%d %d", &min, &max)==2); //这里还需要输入一次（为啥不和上面合并？），所以估计这里你忘了输入直接回车，就造成输入不对

[棉猴]

int number, min, max, count, sum, status;
	sum = 0;
	count = 0;
	printf("Enter lower and upper integer limits:");
	//scanf_s("%d %d", &min, &max);//------注释掉这一行，下面还有一行代码是输入-------
	status = (scanf_s("%d %d", &min, &max) == 2);
	while (status) {
		for (number = min; min <= number&& number <= max; number++) {//min <= number <= max改为min <= number&& number <= max
			count = number * number;
			sum += count;
		}
		printf("The sums of the squares from %d to %d is %d\n", min*min, max*max, sum);//-----添加换行符号--------
		printf("Enter next set of limits :");
		scanf_s("%d %d", &min, &max);
	}
	printf("Done");

VS2015 C++环境跳调试 关于修改min <= number <= max的原因是，在C++中，min <= number <= max并不是像数学中的number大于等于min并且number小于等于max的意思，而是先计算min<=number，这个表达式的结果是true或者false，即1和0，假设是true，则是1，之后再比较1<=max，如果你输入的max是大于等于1的，则min <= number <= max的结果始终是true，就像楼上朋友说的，for是死循环了。所以要把min <= number <= max改成 min <= number&& number <= max

[棉猴]

调试结果的图片发错了，不好意思

[均陵鼠侠]

谢邀。
scanf_s("%d %d", &min, &max);
status= (scanf_s("%d %d", &min, &max)==2);
while (status) {

以上，scanf_s调用了两次，这是没有必要的。可以保留第二个。
while语句要求括号内的控制表达式不为0，但是在while语句的循环体内又没有改变status的值，所以并不是没有循环，是它无法停下来。

[Aist-memory]

可以在while循环前打印一下status的值，看是否满足循环条件

[wxf54318]

应该是if (status) 否则死循环了

[weixin_49489558]

问题不少,优化一下,我也是菜鸟,马上三年级 #include <stdio.h> int main() { int number, min, max, count, /*status,*/ sum; //sum = 0; count = 0; printf("Enter lower and upper integer limits:"); //scanf_s("%d %d", &min, &max); //status = (scanf_s("%d %d", &min, &max) == 2); while (scanf_s("%d %d", &min, &max)!=EOF) { sum = 0;//防止多次操作累加 for (number = min; number <= max; number++) { count = number * number; sum += count; } printf("The sums of the squares from %d to %d is %d", min , max , sum); //printf("Enter next set of limits :"); //scanf_s("%d %d", &min, &max); } printf("Done"); return 0; }