simple star-o pattern v2 .c

/*
    simple star-o  pattern v2 .c

    h = 10

  i   j=h-i

  0    10
  1     9
  2     8
  3     7
  4     6
  5     5
  6     4
  7     3
  8     2
  9     1

*/

#include<stdio.h>

int main(void)
{
/*
    i   number of current row
    j   number of chars in current row
    h   number of rows of whole tirangle
*/
    int i,j,h;

    printf("Enter the height of the triangle : ");
    scanf("%d",&h);

    printf("\n");

    for(i=0;i<h;i++)            // repeat loop for rows of triangle, h times
    {
        for(j=0;j<h-i;j++)      // repeat loop for chars in single row, h-i times
        {
            if(i%2==0)          // if row is even
                printf("O");    // print "O"
            else                // if row is odd
                printf("*");    // print "*"
        }
        printf("\n");           // go to next row
    }
}