fork download 
  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	double a;
  5. 	scanf("%lf",&a);
  6. 		printf("%lf",a*a*3.14);
  7.  
  8.  
  9.  
  10. 	return 0;
  11. }
  12.  
Success #stdin #stdout 0s 5284KB
comments (?)
stdin 
10
stdout 
314.000000
https://ideone.com/r0G595
language:
C (gcc 8.3)
created:
134 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!