Submission #3552239

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Source Code Expand

#include <cstdio>
#include <cstring>
#include <cmath>
#include <climits>
#include <iostream>
#include <algorithm>
#define ri register int

using namespace std;

bool check(int x){
	for(ri i = 2;i <= sqrt(x);i ++)
		if(x%i == 0)
			return false;
	return true;
}

int main() {
	int n;
	scanf("%d",&n);
	while(n != 0) {
		for(ri i = n;i >= 1;i --)
			if(n%i == 0)
				if(check(i)) {
					printf("%d\n",i);
					break;
				}
		scanf("%d",&n);
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:20:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:28:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
                 ^

Judge Result