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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.   // Input
  6.   float r; cin >> r;
  7.  
  8.   // Process -> Output
  9.   cout << "Circumference = " << 3.14*2*r;
  10. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
4
stdout 
Circumference = 25.12
https://ideone.com/pBr0hQ
language:
C++14 (gcc 8.3)
created:
13 days ago
visibility:
public

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