int simple(int num)
{
    /* Start block A */
    int i;
    printf("Block A\n");
    /* End block A */
    for (i = 1; i <= num; i++)
    {
        /* Start block B */
        printf("Block B\n");
        /* End block B */
    }
    /* Start block C */
    printf("Block C\n");
    return(0);
    /* End block C */
}