View Code of Problem 27

#include<stdio.h>
#define N 100
int get_sum(int small,int big);//求a b之间的质数和
int judge(int n);//判断是否是质数，是返回1 否返回0
int main(void){
	int a,b,i=0;
  	int sample[N][2];
  	int sum = 0;
  
  while(scanf("%d%d",&a,&b) == 2){
  	sample[i][0] = a;
    	sample[i][1] = b;
    	++i;
  }
  for(int j = 0;j < i;++j){
    	sum = get_sum(sample[j][0],sample[j][1]);
  	printf("%d\n",sum);
  }
  return 0;
}

int judge(int n){
	if(n <= 1)
          return 0;
  for(int i = 2;i <= n;++i){
  	if((n%i) == 0)
          break;
  }
  if(i == n)
    return 1;
  else 
    return 0;
}

int get_sum(int small,int big){
	int sum = 0;
  for(int i = small +1 ;i < big; ++i){
    if(judge(i))
      sum+=i;
  }  	
  return sum;
}
/*
Main.c: In function 'judge':
Main.c:29:6: error: 'i' undeclared (first use in this function)
   if(i == n)
      ^
Main.c:29:6: note: each undeclared identifier is reported only once for each function it appears in
Main.c:33:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
*/