\(\begin{array}{cccc}1&2&3&4\\2&1&2&3\\3&2&1&2\\4&3&2&1\end{array}\) 

Write a program that reads a number (number of lines equal to the number of columns) and displays the above pattern.

#include<stdio.h>
#include<conio.h>

void main()
{
	int N, i, j;
	do{
		printf("Enter N: ");
		scanf("%d",&N);
	}while(N<=0);

	
    	for(i=1; i<=N; i++)
    	{
        	for(j=i; j>1; j--)
            		printf("%4d", j);
        	for(j=1; j<=N-i+1; j++)
            		printf("%4d", j);
		printf("\n");
    	}

	getch();
}