Submission #1501370

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Source Code Expand

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <limits.h>
#define swap(type,a,b) do{type t=a;a=b;b=t;}while(0);
#define MAX(a,b) (((a)>(b))?(a):(b))
#define MIN(a,b) (((a)<(b))?(a):(b))
#define ll long long
#define INF 100000000
#define FOR(i,a,n) for(i=(a);i<(n);i++)
int comp(const void* a,const void* b){
	return *(int*)a-*(int*)b;
}
void fill(int a[],int b,int c){
	int i;
	FOR(i,0,b) a[i]=c;
	return;
}
int main(void)
{
	int n,sum=0,flag=1,i;
	scanf("%d",&n);
	if(n==1){
		puts("Not Prime");
		return 0;
	}
	for(i=2;i*i<=n;i++){
		if(n%i==0){
			flag=0;
			break;
		}
	}
	if(flag){
		puts("Prime");
		return 0;
	}
	if((n%10)==5||(n%10)%2==0){
		puts("Not Prime");
		return 0;
	}
	while(n>0){
		sum+=n%10;
		n/=10;
	}
	if(sum%3==0) puts("Not Prime");
	else puts("Prime");
	return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:23:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ^

Judge Result