* | 1 | A * * * | 1 2 3 | A B C * * * * * | 1 2 3 4 5 | A B C D E * * * * * * * | 1 2 3 4 5 6 7 | A B C D E F G * * * * * * * * * | 1 2 3 4 5 6 7 8 9 | A B C D E F G H I * * * * * * * | 1 2 3 4 5 6 7 | A B C D E F G * * * * * | 1 2 3 4 5 | A B C D E * * * | 1 2 3 | A B C * | 1 | A#include<stdio.h> int main(){ for(int i =0; i<=5; i++)//loop responsible for writing columns { for(int j = 0; j<=i; j++)//loop responsible for writing rows { printf("%d ", j); } printf("\n"); } } //output /* 0 0 1 0 1 2 0 1 2 3 0 1 2 3 4 0 1 2 3 4 5 */