程序代码：

#include < stdio.h >
#include < stdlib.h >
void main ( )
{
int a[16][16], i, j, k, p, n;
    p = 1;
    while  ( p== 1 )
    {
        printf ( "enter n( n = 1 to 15 ):" );//输入1 到15 中的奇数
        scanf ( "%d", &n );
        if ( ( n != 0 ) && ( n <= 15 ) && ( n%2 != 0 ))
            p = 0;
    }
    for ( i = 1; i <= n; i++ )
        for ( j = 1; j <= n; j++ )
            a[i][j] = 0;
    j = n/2 + 1;
    a[1][j] = 1;
    for ( k = 2; k <= n*n; k++ )
    {
        i = i - 1;
        j = j + 1;
        if ( ( i < 1 ) && ( j > n ) )
        {
            i = i + 2;
            j = j - 1;
        }
        else
        {
            if ( i < 1 )
                i = n;
            if ( j > n )
                j = 1;
        }
        if ( a[i][j] == 0 )
            a[i][j] = k;
        else
        {
            i = i + 2;
            j = j - 1;
            a[i][j] = k;
        }
    }
for ( i = 1; i <= n; i++ )
{
    for ( j = 1; j <= n; j++ )
        printf ( "%5d", a[i][j] );
    printf ( "\n" );
   
}
system ( "pause " );
}