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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	// your code goes here
  5. 	const double pi=3.14159;
  6.     double r,circum,area;
  7.     scanf("%lf",&r);
  8.     circum=2*pi*r;
  9.     area=pi*r*r;
  10.     printf("circumference=%f,area=%f\n",circum,area);
  11.     printf("circumference=%7.2f,area=%7.2f\n",circum,area);
  12. 	return 0;
  13. }
  14.  
Success #stdin #stdout 0s 5284KB
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stdin
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7.2
stdout
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circumference=45.238896,area=162.860026
circumference=  45.24,area= 162.86
https://ideone.com/hfCMDC
language:
C (gcc 8.3)
created:
12 hours ago
visibility:
public

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