cpp/CPrimerPlus6E/Ch12/manydice.c

/* manydice.c -- multiple dice rolls                    */
/* compile with diceroll.c                              */
#include <stdio.h>
#include <stdlib.h>              /* for library srand() */
#include <time.h>                /* for time()          */
#include "diceroll.h"            /* for roll_n_dice()   */
/* and for roll_count  */
int main(void)
{
    int dice,roll;
    int sides;
    int status;
    
    srand((unsigned int) time(0)); /* randomize seed      */
    printf("Enter the number of sides per die, 0 to stop.\n");
    while (scanf("%d", &sides) == 1 && sides > 0 )
    {
        printf("How many dice?\n");
        if ((status =scanf("%d", &dice)) != 1)
        {
            if (status == EOF)
                break;             /* exit loop           */
            else
            {
                printf("You should have entered an integer.");
                printf(" Let's begin again.\n");
                while (getchar() != '\n')
                    continue;     /* dispose of bad input */
                printf("How many sides? Enter 0 to stop.\n");
                continue;         /* new loop cycle       */
             }
        }
        roll = roll_n_dice(dice, sides);
        printf("You have rolled a %d using %d %d-sided dice.\n",
               roll, dice, sides);
        printf("How many sides? Enter 0 to stop.\n");
    }
    printf("The rollem() function was called %d times.\n",
           roll_count);           /* use extern variable */
    
    printf("GOOD FORTUNE TO YOU!\n");
    
    return 0;
}