Question

How to reverse a number in C++?

I'm trying to figure out how to reverse a number in C++ I’d like to understand the logic and steps involved, especially using loops or mathematical operations. What’s the most efficient way to reverse a number in C++?

Answer 1

#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
int reverse=0;
while(n>0){
int lastdigit= n%10;
reverse = reverse*10 + lastdigit;
n=n/10;
}
cout<<reverse<<endl;

return 0;
}