Question

write a program using two dimensional arrays to generate a magic square for a given number
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Answer 1

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include <stdio.h>

# include <conio.h>

void main()

{

int n, i, j, c, a[9][9] ;

clrscr() ;

printf("Enter the size of the magic square : ") ;

scanf("%d", &n) ;

if (n % 2 == 0)

{

printf("\nMagic square is not possible") ;

goto end ;

}

printf("\nThe magic square for %d x %d is :\n\n", n, n) ;

j = (n + 1) / 2 ;

i = 1 ;

for(c = 1 ; c <= n * n ; c++)

{

a[i][j] = c ;

if(c % n == 0)

{

i = (i + 1);

goto loop ;

}

if(i == 1)

i = n ;

else

i = i - 1 ;

if(j == n)

j = 1;

else

j = j + 1 ;

loop : ;

}

for (i = 1 ; i <= n ; i++)

{

for (j = 1 ; j <= n ; j++)

{

printf("%d\t", a[i][j]) ;

}

printf("\n\n") ;

}

end : ;

getch() ;

}

Output of above program

Enter the size of the magic square : 3

The magic square for 3 x 3 is :

8 1 6

3 5 7

4 9 2