Magic Square

C Program For Magic Square

Source Code:


#include<stdio.h>
#include<conio.h>

void magic(int m[20][20],int n);
void show(int m[20][20],int n);

void main()
{
int m[20][20],n;
clrscr();
printf("enter size of magic square:");
scanf("%d",&n);
magic(m,n);
printf("\n\nmagic matrix is:\n\n");
show(m,n);
getch();
}
void magic(int m[20][20],int n)
{
int c,i,j;
for(i=0;i<=n-1;i++)
 {
 for(j=0;j<=n-1;j++)
  {
  m[i][j]=0;
  }
 }

i=0;
j=n/2;
c=1;
while(c<=n*n)
{
m[i][j]=c;
i--;
j++;
if(i<0 && j>n-1)
{
i=i+2;
j=j-1;
}
else if(i<0 && j<=n-1)
{
i=n-1;
}
else if(i>=0 && j>n-1)
{
j=0;
}
else if(m[i][j]!=0)
{
i=i+2;
j=j-1;
}
c++;
}
}
void show(int m[20][20],int n)
{
int i,j;
for(i=0;i<=n-1;i++)
 {
 for(j=0;j<=n-1;j++)
  {
  printf(" %d ",m[i][j]);
  }
  printf("\n");

 }
}

OUTPUT:

enter size of magic square:3
                                                                             
magic matrix is:                                                                
                                                                                
 8  1  6                                                                        
 3  5  7                                                                        
 4  9  2                                                                        
 
enter size of magic square:5
 
magic matrix is:                                                                
                                                                                
 17  24  1  8  15                                                               
 23  5  7  14  16                                                               
 4  6  13  20  22                                                               
 10  12  19  21  3                                                              
 11  18  25  2  9