Submission #2372012

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Source Code Expand

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

void change(int *x, int *y);

int n, x[100], y[100];
double lmax=0;

int main(void){
	scanf("%d", &n);
	for(int i=0;i<n;i++){
		scanf("%d %d", &x[i], &y[i]);
	}

	for(int i=0;i<n;i++){
		for(int j=i;j<n;j++){
			if((x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]) > lmax)	lmax = (x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]);
		}
	}

	printf("%f", sqrt(lmax));

	return 0;
}

void change(int *x, int *y){
	int z;
	z = *x;
	*x = *y;
	*y = z;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:11:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ^
./Main.c:13:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &x[i], &y[i]);
   ^

Judge Result