#include<iostream>
#include<stdio.h>
#include<conio.h>
using namespace std;
int main()
{
//variable declaration
int x, y, n;
char ch;
cout<<"Enter the number of rows -> ";
cin>>n;
for(x = 1;x<= n;x++)
{
cout<<"\n";
ch = 'A';
for(y = 1;y<=x;y++)
{
cout<<ch;
ch++;
}
}
}
OUTPUT
Number of rows -> 9
A
AB
ABC
ABCD
ABCDE
ABCDEF
ABCDEFG
ABCDEFGH
ABCDEFGHI
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