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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	double pi = 3.14;//円周率
  5. 	double r = 2.5;//円の半径
  6. 	double s;//面積
  7. 	s = r*r*pi;
  8. 	printf("%f",s);
  9.  
  10. 	return 0; 
  11. }
  12.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/LH1AgR
language:
C (gcc 8.3)
created:
10 days ago
visibility:
public

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