Question

How to print N size triangle of zeros with 1 to N numbers in the center in C++

Answer 1

#include <iostream>

int main() {
    int N = 9;
    
    for (int i = 1; N > 0; N--, i++) {
        for (int j = 1; j < N; j++)
            std::cout << " ";
        for (int j = 1; j < i; j++)
            std::cout << "0";
        
        std::cout << i % 10;
        
        for (int j = 1; j < i; j++)
            std::cout << "0";
        
        std::cout << "\n";
    }
}




/*
run:

        1
       020
      00300
     0004000
    000050000
   00000600000
  0000007000000
 000000080000000
00000000900000000

*/

 

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