Number Word

/*
1.  NUMBER WORD
The program takes any 3-digit integer and display the number word.
Sample run 1:
Input   : 8
Output  : eight

Sample run 2:
Input   : 45
Output  : forty five

Sample run 3:
Input   : 511.
Output  : five hundred eleven
*/

#include<stdio.h>
#include<conio.h>
#include<Windows.h>
#include<stdlib.h>
#include<time.h> //test
#include<ctype.h>

void prompt(int i);
void countdown(int time);
void evaluation(int number);
void hundreds(int number);
void oneToNineNine(int number);
void tenMulti(int number);
void ones(int number);

void main()
{
    int number;
    char choice;
    while(1)
    {
        do
        {
        prompt(1);
        prompt(4);
        scanf_s("%d", &number);
        if ((number>999)||(number<0))
            {
                prompt(2);
                countdown(3);
                system("cls");
            }
        else break;
        }while (1);
    prompt(5);
    evaluation(number);
    prompt(3);
    choice=toupper(_getch());
    system("cls");
    if (choice!='Y') break;
    }/*
    srand(unsigned(time));
    int test;
    printf("DEBUG: ENTER NUMBER OF RANDOM NUMBERS TO BE GENERATED");
    scanf_s("%d", &test);
    for(test;test;test--)
    {
    number=rand()%1000;
    printf("\n%d\t",number);
    evaluation(number);
    }*/
}
void prompt(int i)
{
        switch(i)
        {
        case 1:
            printf("\n\tPlease enter a number from 0-999.\n");
            break;
        case 2:
            printf("\n\tInvalid entry. Please enter a number from 0-999\n");
            break;
        case 3:
            printf("\n\n\tDo you want to continue? Press Y for yes or anything else to exit.");
            break;
        case 4:
            printf("\n\tInput:\t");
            break;
        case 5:
            printf("\tOutput:\t");
            break;
        }
}

void evaluation(int number)
{
    int temp;
    temp=number;
if (temp<10) ones(temp);
else if (temp<100)
    oneToNineNine(temp);
else
    {
    temp/=100;
    if (temp>0)hundreds(temp);
    number=number%100;
    oneToNineNine(number);
    }
}


void ones(int number)
{
    switch(number)
    {
    case 0:
        printf("zero");
        break;
    case 1:
        printf("one");
        break;
    case 2:
        printf("two");
        break;
    case 3:
        printf("three");
        break;
    case 4:
        printf("four");
        break;
    case 5:
        printf("five");
        break;
    case 6:
        printf("six");
        break;
    case 7:
        printf("seven");
        break;
    case 8:
        printf("eight");
        break;
    case 9:
        printf("nine");
    }
}

void oneToNineNine(int number)
{
    int temp;

    if ((number<10)&&(number>0))
    {
        printf("and ");
        ones(number);
    }
    else if (number<20)
    {
        switch(number)
        {
        case 10:
            tenMulti(1);
            break;
        case 11:
            printf("eleven");
            break;
        case 12:
            printf("twelve");
            break;
        case 13:
            printf("thirteen");
            break;
        case 14:
            printf("fourteen");
            break;
        case 15:
            printf("fifteen");
            break;
        case 16:
            printf("sixteen");
            break;
        case 17:
            printf("seventeen");
            break;
        case 18:
            printf("eighteen");
            break;
        case 19:
            printf("nineteen");
        }
    }
else
{
    temp=number/10;
    tenMulti(temp);
    number=number%10;
    if (number>0)
    {
    printf("-");
    ones(number);
    }
}
}


void tenMulti(int number)
{

    switch(number)
    {
    case 1:
        printf("ten");
        break;
    case 2:
        printf("twenty");
        break;
    case 3:
        printf("thirty");
        break;
    case 4:
        printf("forty");
        break;
    case 5:
        printf("fifty");
        break;
    case 6:
        printf("sixty");
        break;
    case 7:
        printf("seventy");
        break;
    case 8:
        printf("eighty");
        break;
    case 9:
        printf("ninety");
    }
}


void hundreds(int number)
{
ones(number);
printf(" hundred ");
}


void countdown(int time)
{
    for (time;time;time--)
    {
        printf("Restarting program in %d. . . \r", time);
        Sleep(1000);
    }
}