nikhil mungel

#define N 9#include<stdio.h>#define SEE 1#define SAW 2#if N < 1#define N 1#endifint main(void){	int i, j, next, dir = SEE, n = N - 1;	int matrix[N][N];	next = i = j = 0;	while(N)	{		matrix[i][j] = ++next;		if((i & j) == n) break;		switch(dir)		{			case SEE:				if(j == n)				{					++i; dir = SAW;					break;				}				if(!i)				{					++j; dir = SAW;					break;				}				--i; ++j;			break;			case SAW:				if(i == n)				{					j++; dir = SEE;					break;				}				if(!j)				{					i++; dir = SEE;					break;				}				--j; ++i;		}	}	printf("\n\nValue of N is %d.\n\n", N);	for(i = 0; i <= n; ++i)	{		for(j = 0; j <= n; ++j)			printf("\t%02d", matrix[i][j]);		printf("\n\n");	}	return 0;}