PTA Number of prime numbers and summation answers

#include <stdio.h>
int main()
{
	int i,n,m,sum=0;
	int count=0;
	scanf("%d %d",&n,&m);
	for(i=n;i<=m;i++)
	{
		int j;
		for(j=2;j<i;j++)
		{
			if(i%j==0)
			{
				break;
			}
		}
		if(j==i)
		{
			count++;
			sum+=i;
		}
	}
	printf("%d %d %d %d",n,m,count,sum);
	return 0;
}