where shoud i place "i" to save "n" value in this code and can show the saved amount of "n" in the last line?

Question

#include <iostream>
using namespace std;

int main() {

int n, s=0,a,i;
i=n;
cin>>n;
while(n>0)
{
a=n%10;
s=s*10+a;
n=n/10;
}

cout<<"enter n"<<i<<":"<<s;

return 0;
}

Answer 1

The program is read and executed from top to bottom, therefore assigning 'n' to 'i' when neither of them has been initialized with a value is basically worthless. You first need to get the value of 'n' from the user before being able to copy it into 'i'.

Answer 2

Ok Shadow but what should i do if i need to save the amount of so called 'n' and then show it in the output.

Answer 3

Firstly ask the user to enter n value with cout<<"Enter n"<<endl;
Then use cin>>n;
Then assign n to i or i to n i=n; then do the while looping.And finally cout<<i<<s;