Convert a number into words

#include <conio.h>    // For getch() function only
#include <iostream>
using namespace std;


void numword1(int);
void numword2(int);

int main()
{
long unsigned int number,temp;
int mult,i,digit,digits,last_two,hundred,thousand,lakh,crore;
digits=last_two=hundred=thousand=lakh=crore=0;

cout<<"Enter a number(lesser than 99,99,99,999)
";
cin>>number;

if(number>999999999)
{
 cout<<"Number out of range!";
 getch();
 exit(0);
}

if(number==0)
{
 cout<<"Zero";
 getch();
 exit(0);
}

temp=number;

digit=number%10;                    // Extracting last two digts
last_two=digit;
number=number/10;
digit=number%10;
last_two=(digit*10)+last_two;

 number=number/10;                  // Extract hundreds
 digit=number%10;
 hundred=digit;

 number=number/10;                  // Extract thousands
 digit=number%10;
 thousand=digit;
 number=number/10;
 digit=number%10;
 thousand=(digit*10)+thousand;

 number=number/10;                // Extract lakhs
 digit=number%10;
 lakh=digit;
 number=number/10;
 digit=number%10;
 lakh=(digit*10)+lakh;

 number=number/10;              // Extract crores
 digit=number%10;
 crore=digit;
 number=number/10;
 digit=number%10;
 crore=(digit*10)+crore;



while(temp!=0)                // Calculate number of digits in the number
{
 temp=temp/10;
 digits++;
}

cout<<"The number in words is:
";

            // Printing the number in words

if(digits>=8)
{
 numword2(crore);
 cout<<"crores ";
}
if(digits>=6)
{
 if(lakh!=0)
 {
 numword2(lakh);
 cout<<"lakh ";
 }
}
if(digits>=4)
{
if(thousand!=0)
{
 numword2(thousand);
 cout<<"Thousand ";
}
}
if(digits>=3)
{
if(hundred!=0)
{
 numword2(hundred);
 cout<<"Hundred ";
}
}

numword2(last_two);

getch();
return 0;
}


void numword1(int num)
{
switch(num)
{
 case 0: break;

 case 1: cout<<"One ";
         break;
 case 2: cout<<"Two ";
         break;
 case 3: cout<<"Three ";
         break;
 case 4: cout<<"Four ";
         break;
 case 5: cout<<"Five ";
         break;
 case 6: cout<<"Six ";
         break;
 case 7: cout<<"Seven ";
         break;
 case 8: cout<<"Eight ";
         break;
 case 9: cout<<"Nine ";
         break;
 case 10: cout<<"Ten ";
         break;
 case 11: cout<<"Eleven ";
         break;
 case 12: cout<<"Twelve ";
         break;
 case 13: cout<<"Thirteen ";
         break;
 case 14: cout<<"Fourteen ";
         break;
 case 15: cout<<"Fifteen ";
         break;
 case 16: cout<<"Sixteen ";
         break;
 case 17: cout<<"Seventeen ";
         break;
 case 18: cout<<"Eighteen ";
         break;
 case 19: cout<<"Nineteen ";
         break;
}
return;
}

void numword2(int num)
{
if(num>=90)
{
 cout<<"Ninety ";
 numword1(num-90);
}
else if(num>=80)
{
 cout<<"Eighty ";
 numword1(num-80);
}
else if(num>=70)
{
 cout<<"Seventy ";
 numword1(num-70);
}
else if(num>=60)
{
 cout<<"Sixty ";
 numword1(num-60);
}
else if(num>=50)
{
 cout<<"Fifty ";
 numword1(num-50);
}
else if(num>=40)
{
 cout<<"Fourty ";
 numword1(num-40);
}
else if(num>=30)
{
 cout<<"Thirty ";
 numword1(num-30);
}
else if(num>=20)
{
 cout<<"Twenty ";
 numword1(num-20);
}
else
   numword1(num);

return;
}
