为什么1<=i<=100，有前面的<=就提交不了了啊，求解答，谢谢
#include <stdio.h>
int main()
{
int i,sum=0;
i=1;
while( 1<=i<=100 ) //循环条件应该是什么呢？
{
sum=sum+i;
i++; //这里是不是应该改变循环变量的值
}
printf("100以内所有整数之和为：%d\n", sum);
return 0;
}
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