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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. void i_f(char a, char b, int width) {
  5.  
  6.   if(width < 0)
  7.   {
  8.   	cout<<string(width, b)<<endl;  	return;
  9.   }
  10.  
  11.   cout <<string(width, a);
  12.   i_f(a,b,-width);
  13.   i_f(a,b,width-2);
  14.   cout<<string(width, a);
  15.   i_f(a,b,-width);
  16.  
  17. }
  18.  
  19. int main() {
  20. 	i_f('X', '-', 5);
  21. 	return 0;
  22. }
Runtime error #stdin #stdout #stderr 0s 3228KB
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stdin
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Standard input is empty
stdout
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XXXXX
stderr
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terminate called after throwing an instance of 'std::length_error'
  what():  basic_string::_S_create
https://ideone.com/54YrHk
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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