Submission #74081066

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Source Code Expand

#include<stdio.h>
int main(){
    int n;
    float pi = 3.1415926535897932384626433;
    scanf("%d" , &n);
    float area = (pi*n*n)/4;
    printf("%f" , area);
    return 0;
}

Submission Info

Compile Error

Main.c: In function ‘main’:
Main.c:5:5: warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    5 |     scanf("%d" , &n);
      |     ^~~~~~~~~~~~~~~~

Judge Result