Submission #2421052

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Source Code Expand

#include<stdio.h>
#include<stdlib.h>
#include<math.h>
#include<string.h>
#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)
 
double dist(double x, double y){
  return sqrt(x*x+y*y);
}
 
int main(){
  int i,j,k,l,m,n;
  int x[100],y[100];
  double res, tmp;
 
  res = 0;
  scanf("%d",&n);
  rep(i,n) scanf("%d%d",x+i,y+i);
  rep(i,n) REP(j,i+1,n){
    tmp = dist(x[i]-x[j],y[i]-y[j]);
    if(res < tmp) res = tmp;
  }
  printf("%.10f\n",res);
 
  return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:18:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
   ^
./Main.c:19:12: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   rep(i,n) scanf("%d%d",x+i,y+i);
            ^

Judge Result