Submission #2139102

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Source Code Expand

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

#define LINE_BUF_SIZE 1024

int main(){

    int i,j,k;
    double max,min;
    int N,value;
    int x,y;
    char line[LINE_BUF_SIZE];
    int count = 0;

    fgets(line,sizeof(line),stdin);
    sscanf(line,"%d",&N);

    int xy[2][N];
    double len=0;

    for(i=0;i<N;i++){
        fgets(line,sizeof(line),stdin);
        sscanf(line,"%d %d",&x,&y);
        xy[0][i] = x;
        xy[1][i] = y;
    }

    max = 0.0;
    count = 0;

    for(i=0;i<N;i++){
        for(j=count;j<N;j++){
                
            len = (double)(xy[0][i]-xy[0][j])*(xy[0][i]-xy[0][j]) + (double)(xy[1][i]-xy[1][j])*(xy[1][i]-xy[1][j]);
            if(len >= max){
                max = len;
            }

        }
        count = i;
    }

    printf("%f\n",sqrt(max));

    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:16:5: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result]
     fgets(line,sizeof(line),stdin);
     ^
./Main.c:23:9: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result]
         fgets(line,sizeof(line),stdin);
         ^

Judge Result