C Language: A Example of Print Snake Matrix

// SnakeMatrix.cpp : Defines the entry point for the console application.
// Create by Xianyi.Ye, May 4,2010
#include "stdafx.h"
#include <iostream.h>
/*
Question: Print a Sanke Matrix as following
i\j 1 2 3 4 5 6
1 1 2 9 10 25 26
2 4 3 8 11 24 27
3 5 6 7 12 23 28
4 16 15 14 13 22 28
5 17 18 19 20 21 30
6 36 35 34 33 32 31
Explain:
"i" is the line number of the matrix.
"j" is the column number of the matrix.
*/
void showMatrix(int n)
{
for(int i=1 ; i<=n ; i++)
{
for(int j=1 ; j<=n ; j++)
{
if(i<=j)//upper triangular matrix
{
if(j%2==0) //j==even number
cout<<(j-1)*(j-1)+i<<" " ;
else //j==odd number
cout<<(j-1)*(j-1)+2*j-i<<" " ;
}
if(i>j) //lower triangular matrix
{
if(i%2==0) //i==even number
cout<<(i-1)*(i-1)+2*i-j<<" " ;
else //i==odd number
cout<<(i-1)*(i-1)+j<<" " ;
}

}
cout<//create new line.
}
}
int main(int argc, char* argv[])
{
showMatrix(6) ;
return 0;
}
Result: