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  1. #include <iostream>
  2. using namespace std;
  3.  
  4.  
  5.  
  6.  
  7.     int main(){
  8.     for(int r = 1; r <= 5; r++){
  9.         for(int c = 1; c <= 2*r -1; c++)
  10.                     cout << "*";
  11.             cout<< endl;
  12.     }
  13.     for(int r1 = 5; r1 >= 1; r1--){
  14.             for(int c1 = 1; c1 <= 2*r1 -1; c1++)
  15.                     cout << "*";
  16.             cout<< endl;
  17.     }
  18.     return 0;
  19. }
Success #stdin #stdout 0s 3340KB
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stdin
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Standard input is empty
stdout
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*
***
*****
*******
*********
*********
*******
*****
***
*
https://ideone.com/z4hWeN
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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