Submission #1661632

---

Source Code Expand

#include <stdio.h>
#include <math.h>

double dist(int xy1[], int xy2[]){
  return sqrt((xy1[0] - xy2[0]) * (xy1[0] - xy2[0])
	      + (xy1[1] - xy2[1]) * (xy1[1] - xy2[1]));
}

int main(){
  int N;
  scanf("%d\n",&N);

  int xy[N][2];
  for(int i=0; i<N; i++){
    scanf("%d %d",&xy[i][0],&xy[i][1]);
  }
  
  double max = 0.0;
  for(int i=0; i<N; i++){
    for(int j=i+1; j<N; j++){
      if(max < dist(xy[i], xy[j])){
        max = dist(xy[i], xy[j]);
      }
    }
  }
  
  printf("%lf\n",max);
  return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:11:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d\n",&N);
   ^
./Main.c:15:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&xy[i][0],&xy[i][1]);
     ^

Judge Result