Write a c program to print a Number pattern-23

#include<stdio.h>
int main()
{
int i,j,k;
for(i=1;i<=5;i++)
{
k=1;
for(j=1;j<=6;j++)
{
if(j<=i+1)
{
printf("%d",k);
k=1-k;
}

else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}