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  1. #include <iostream>
  2. using namespace std ;
  3.  
  4.  
  5.  
  6. double C_Area(double r) {
  7.     return 3.14*r*r ;
  8. }
  9.  
  10.  
  11.  
  12. int main () {
  13.  
  14.     double r  ;
  15.     cin >> r  ;
  16.     cout << "Circle Area = " << C_Area(r) << endl;
  17.  
  18. 	return 0 ;
  19. }
Success #stdin #stdout 0.01s 5292KB
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Circle Area = 28.26
https://ideone.com/xbkDmq
language:
C++14 (clang 8.0)
created:
1 day ago
visibility:
public

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