# include <stdio.h>
# include <math.h>
 
int main() {
 
// Introductory message
printf("This program creates a magic sqaure of a specified size.\n");
printf("The size must be an odd number between 1 and 99.\n");
 
// Get the users magic number and allocate to int n
int n;
printf("Enter size of magic square: ");
scanf("%d", &n);
printf("\n");
// Create the array (not using VLA)
int magic[99][99], i, j;
for( i = 0; i < n; i++ ) {
  for( j = 0; j < n; j++ ) {
    magic[i][j] = n * ( (i + j - 1 + (int) floor(n / 2)) % n ) + ((int) (i + 2 * j - 2) % n ) + 1;
  }
}
 
// Now let's print the array                                                  
for (i = 0; i < n; i++) {                                                     
    for (j = 0; j < n; j++) {                                                 
        printf("%4d", magic[i][j]);                                           
    }                                                                         
    printf("\n");                                                             
}                                                                             
return 0;                                                                     
}             

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NQ==

5