Write a C program to Generate Magic Square

What is magic square?

A magic square is an arrangement of integers in a square in such a way that the sum of each horizontal, vertical, and diagonal row is one constant number, the so-called magic constant.

                                       

An Odd Magic Square

Code to generate Magic Square

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# include <stdio.h>  

# include <conio.h>  

void main()  

{  

int n, i, j, c, magic[99][99];  

clrscr() ;  

printf("Enter the size of the magic square(between 1 to 99 ) : ") ;  

scanf("%d", &n) ;

if (n % 2 == 0)  

{  

c = 1;

for(i = 0; i < n; i++)

for(j = 0; j < n; j++, c++)

magic[i][j] = c;

for(i = 0, j = (n-1); i < n/2; i++, j--)

{

c = magic[i][i];

magic[i][i] = magic[j][j];

magic[j][j] = c;

}

for(i = 0, j = (n-1); i < n/2; i++, j--)

{

c = magic[i][j];

magic[i][j] = magic[j][i];

magic[j][i] = c;

}

for (i = 0 ; i < n ; i++)  

{  

for (j = 0 ; j < n ; j++)  

{  

printf("%d\t", magic[i][j]) ;  

} 

printf("\n\n") ;  

}   

 

}

else

{

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

j = (n + 1) / 2 - 1 ;

i = 0 ;  

for(c = 1 ; c <= n * n ; c++)  

{  

magic[i][j] = c ;  

if(c % n == 0)  

{  

i = (i + 1);  

}

else

{

if(i == 0)  

i = n-1;  

else  

i = i - 1 ; 

if(j == (n-1))

j = 0;  

else  

j = j + 1 ;  

}

} 

for (i = 0 ; i < n ; i++)  

{  

for (j = 0 ; j < n ; j++)  

{  

printf("%d\t", magic[i][j]) ;  

} 

printf("\n\n") ;  

}  

}  

getch() ;  

}   

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