100至200内的素数

int main()
{
	int a = 0;
	int count = 0;
	for (a = 100; a <= 200; a++)
	{
		int b = 0;
		for (b = 2; b < a; b++)
		{
			if (a % b == 0)
			{
				break;
			}
		}
		if (b == a)
		{
			count ++ ;
			printf(" %d", a);
		}
	}
	printf(" 总数=%d\n", count);
		return 0;
}

#include<math.h>
int main()
{
	int a = 0;
	int count = 0;
	for (a = 100; a <= 200; a++)
	{
		int b = 0;
		for (b = 2; b <= sqrt(a); b++)
		{
			if (a % b == 0)
			{
				break;
			}
		}
		if (b > sqrt(a))
		{
			count++;
			printf(" %d", a);
		}
	}
	printf(" 总数=%d\n", count);
	return 0;
}