#include<stdio.h>

void main()

{

int prime(int m);

int m, n, count = 0, sum = 0, i;

printf("請輸入正整數m和n:");

scanf_s("%d%d", &m, &n);

for (i = m; i <= n; i++) {

if (prime(m))

{count=count+1; sum = sum + i; }

};

printf("素數個數為%d,素數的和為%d", count, sum);

getchar();

getchar();

}

int prime(int x)

{

int i = 2;

for (i = 2; i < x; i++)

if (x%i == 0) break;

if (i >= x) return 1;

else return 0;

}