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  1. #include <stdio.h>
  2. #define PI 3.14159
  3. int main(void)
  4. {
  5.     double r;
  6.     scanf("%1f",&r);
  7.     printf("circumference = %f\n",2*3.14159*r);
  8.     printf("area = %f\n",PI*r*r);
  9. 	return 0;
  10. }
  11.  
Success #stdin #stdout 0.01s 5324KB
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stdout
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circumference = 0.000000
area = 0.000000
https://ideone.com/pyDZ3X
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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