编写程序求给定正整数m以内的素数之和。
#include <stdio.h>#include <math.h>// 此函数用于判断是否为素数int is_prime_number(int n){for (int j = 2; j <= sqrt(n); j++){if (n % j == 0){return 0;}}return 1;}int main(){int m = 0;scanf("%d",&m);int sum = 0;for (int i = 2; i < m; i++){int flag = is_prime_number(i);if (flag == 1){sum += i;}}printf("%d\n",sum);}