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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. string fun(string t, string s = "x", int r = 1) {
  6.     while(--r)
  7.         s += s;
  8.     t = t + s;
  9.     return s;
  10. }
  11.  
  12. int main() {
  13.     string name = "a";
  14.     cout << fun(name);
  15.     cout << name;
  16.     return 0;
  17. }
  18.  
  19.  
Success #stdin #stdout 0.01s 5284KB
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Standard input is empty
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xa
https://ideone.com/jT2s6T
language:
C++ (gcc 8.3)
created:
12 days ago
visibility:
public

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