Number Patter Print in C(11).

#include <stdio.h>

int main()

{

    int a;

    int n=1,m;

    printf("Please enter a Number:");

    scanf("%d",&a);

    for(; n<=a; n++)

    {

        if(n%2==0) ///for even column

        {

            for(m=1; m<=a; m++)

            {

                if( m%2!=0) printf("0");

                else printf("1");

            }

        }

        else if (n%2!=0)  ///for odd column

        {

            for(m=1; m<=a; m++)

            {

                if( m%2!=0) printf("1");

                else printf("0");

            }

        }

        printf("");

    }

    return 0;

}