1 int matrix[MAX][MAX];
 2 void PrintMatrix(int x,int y,int start,int n)
 3 {
 4 if(n==0)
 5 return ;
 6 if(n==1)
 7 {
 8 matrix[x][y] = start;
 9 return ;
10 }
11 int i,j;
12 for(j=y;j<y+n-1;j++)
13 matrix[x][j] = start++;
14 for(i=x;i<x+n-1;i++)
15 matrix[i][y+n-1] = start++;
16 for(j=y+n-1;j>y;j--)
 
17 matrix[x+n-1][j] = start++;
18 for(i=x+n-1;i>x;i--)
19 matrix[i][y] = start++;
20 PrintMatrix(x+1,y+1,start,n-2);
21 }