7. Write a program to demonstrate Newton-Forward Interpolation formula.

        /*Program to execute Newton Forward Interpolation */
	#include <stdio.h>
	#include <conio.h>
	#define max 50
	void main()
	{
	    float arrx[max + 1], arry[max + 1], diff[max + 1][5], num = 1.0, den = 1.0;
	    float x, p, h, y;
	    int i, j, k, n;
	    print("Enter the value of n: ");
	    scanf("%d", &n);
	    printf("Enter values for x and y:\n"); /*Input data */
	    for (i = 0; i <= n - 1; i++)           /* Calculate First difference*/
	        scanf("%f %f", &arrx[i], &arry[i]);
	    printf("\nEnter value of x for which value of y is needed: ");
	    scanf("%f", &x);
	    h = arrx[1] - arrx[0];
	    for (i = 0; i < n - 1; i++) /* calculate frist difference */
	        diff[i][1] = arry[i + 1] - arry[i];
	    for (j - 2; j < 5; j++) /* calculate other difference  */
	        for (i - 0; i <= n - j; i++)
	            diff[i][j] = diff[i + 1][i + 1] - diff[i][j - 1];
	    i = 0;
	    while (arry[i + 1] < x) /*search for x0,y0 */
	        i++;
	    p = (x - arry[i + 1]) / h;
	    y = arry[i];
	    for (k = 1; k < 5; k++) /* apply interpolation formula */
	    {
	        num *= p - k + 1;
	        den *= k;
	        y += (num / den) * diff[i][k];
	    }
	    printf("value of y = %f ,  when  x = %f", y, x);
	    getch();
	}",