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  1. #include <stdio.h>
  2. #define pi 3.14
  3. int main(void) {
  4. 	// your code goes here
  5.     double r;
  6.     scanf("%lf",&r);
  7.     printf("circumference = %.2f\n",2*pi*r);
  8.     printf("area = %.2f",pi*r*r);
  9. 	return 0;
  10. }
  11.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
4
stdout 
circumference = 25.12
area = 50.24
https://ideone.com/muQY75
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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