C Program To Display Inverted Half Triangle of Alphabets (Pattern)

C Program :

/*
Aim: Write a program to display output as follows:
A B C D
A B C 
A B
A 
*/

#include <stdio.h>
#include <stdlib.h>

void main()
{ 
	int c,a,e,n,l,num;
 
	printf("\n How many lines:- ");
	scanf("%d",&n); 
	printf("\n");

	if ((n>26) || (n<=0)) 
	{
	printf("\n Error:You can specify only 26 lines. please specify a numeric value \n \n");
	exit(1);
	}

	for (l=n;l>=1;l--)
	{
		e=64+l;
		for (num=65;num<=e;num++)
			printf("%c\t",num);
			printf("\n");
	}
	printf("\n");
} // End of the code 

/* Output of above code:

[root@ugilinux ~]# gcc -o e5a3 e5a3.c
[root@ugilinux ~]# ./e5a3

 How many lines:- 4

A B C D 
A B C 
A B 
A 
*/