C Program to Print 0-010-01010 Pyramid Number Pattern

/* Program to print 0-010-01010 */
#include<stdio.h>

/* Main function */
int main()
{
    int i, j, k, n;
    printf("Enter number of lines of pattern: ");
    scanf("%d", &n);

    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n-i;j++)
        {
            printf(" ");
        }
        for(k=1;k<=2*i-1;k++)
        {
            printf("%d", (k+1)%2);
        }
        printf("\n");
    }

    return 0;
}

output

Enter number of lines of pattern: 10

         0
        010
       01010
      0101010
     010101010
    01010101010
   0101010101010
  010101010101010
 01010101010101010
0101010101010101010