Submission #1791686

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Source Code Expand

#include<stdio.h>
int main()
{
float r,g;
scanf("%f",&r);
scanf("%f",&g);
float a=2*g-r;
printf("%f ",a);
return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:5:1: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
 scanf("%f",&r);
 ^
./Main.c:6:1: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
 scanf("%f",&g);
 ^

Judge Result