magicsquare.c

/*
    Name: magicsquare.c
    Copyright:
    Author: Mr.Kindle
    Date: 29-11-22 23:24
    Description: This program print the n*n magic square. Provided that 'n' must be an odd number.It also print the sum
    of each row or column or digonals which are equal offcourse.

youtube: https://youtu.be/uVnsJjwLT4Y
*/



#include<stdio.h>
#include<stdlib.h>
#define MAX 15

void magicsquare( int);

void display();

/*taking mat and n as global variable so that all other function may use it*/

int MAT[MAX][MAX];
int n;

int main()
{
    int i,j,num;
  int count=0;
    printf("Enter 'n' (an odd number only) for n*n matrix: ");
    scanf("%d",&n);

    if(n%2 == 0)//check for even number which is not acceptable
        {
            printf("\nPlease enter only odd number: ");
            exit(1);
        }


    printf("Enter initial (or minimum range) number: ");
    scanf("%d",&num);

    magicsquare( num);
    printf("\n\n");
    display();

    return 0;

}//main

void magicsquare( int num)
    {
        int i,j,no_of_term;
        int term;
        no_of_term = n*n;//total number of element

         /*setting INitial position of cursor*/

        i=(n-1)/2; //middle row
        j=0; //first column

        for(term=1;term<=no_of_term;term++)
        {
            MAT[i][j]=num++;//first assign then increase

            if(term%n == 0)//if term is multiple of 'n'
               j++; //take the cursor one step right
            else
            {   i++; //go down
                j--; //go left
            }
     /*if cursor comes out of the matrix*/

        if(i>n-1)
            i=0;

        if(j<0)
            j=n-1;

         }//for
    }//end of magic square

void display()
    {
        int i,j,sum = 0;
        for (i=0;i<n;i++)
        {
            printf("|"); //for decoration
            for (j=0;j<n;j++)
                 {
                        printf(" %2d |",MAT[i][j]);
                        if(i==0)
                            {
                                sum = sum + MAT[i][j];
                            }
                }
            printf("\n");

        }
    printf("\n\n sum of each row, each column or each digonal is = %d",sum);
    }//end of display