fork download 
  1.  
  2. #include <stdio.h>
  3. #define PI 3.14159
  4. int main(void) {
  5. 	// your code goes here
  6.     double r;
  7.     scanf("%lf",&r);
  8.     printf("周长=%f\n",2*r*PI);
  9.     printf("面积=%f\n",PI*r*r);
  10. 	return 0;
  11. }
Success #stdin #stdout 0s 5280KB
comments (?)
stdin 
Standard input is empty
stdout 
周长=0.000000
面积=0.000000
https://ideone.com/Um4XAK
language:
C (gcc 8.3)
created:
6 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!