Nested Number Character Pyramid

Q. Write a C program to print the following nested number-character pyramid/pattern as:

    A
    1
    BB
    22
    CCC
    333

Ans.

/*c program for nested number character pyramid*/
#include<stdio.h>
int main()
{
 int num,r,c,z,n=1;
 char ch='A';
 printf("Enter Maximum number : ");
 scanf("%d", &num);