C语言求1-100以内的素数

#include <stdio.h>

#include <math.h>

void main()

{
for (int i = 1; i <= 100; ++i)
{
int j = 2;
for (; j<=sqrt(i); ++j)
{
if (i%j == 0)
break;
}
if (j>sqrt(i) && i != 1)
printf("%d ", i);
}
system("pause");
}