Swap numbers to words

>>>>>>>>THE CODE<<<<<<<<

#include<iostream>
#include <math.h>
using namespace std;
void main()
{
   int num,i=10,check;
   cout<<"Enter number \n";
   cin>> num;
//This Part of the program breaks the number into powers
   while(true)
{
if((check=num/pow(10,i)) = = 0)
i--;
else break;
   }
//This part takes the power and gives the number on that position to the switch
   while(num)
   {

    check= num / pow(10,i);
    num= num - check*pow(10,i);
    i--;

//This part of the program takes the number and prints the word
switch(check)
{
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;
default:
cout<<"zero  ";

}
 }
cout<<endl;



//coded by cppfuzz.com  
}