c++

[pranab]

i have a program but i cannot understand the code of the below program ? pls explain step by step

#include<iostream.h>
#include<conio.h>
void main
{
int num, rev=0
cout<<&quot;type in a number&quot;;
cin>>num;
while (tnum>0)
{
int rem=tnum%10;
rev=rev*10+rem;
tnum=tnum/10;
}
cout<<&quot;the reverse of &quot;<<num<<&quot;is&quot;<<rev;
}