Question

I need to write code that checks whether or not the user inputted the same word twice, and if so, it will output a message stating that they did. So far, I have:

#include <iostream>

using namespace std;

int main(){

    string previous = "";
    string current = "";

    while (cin>>current); {
        if(current == previous); {
            cout<<"repeated word";
        }
        previous=current;

    }
}

It compiles, but it won’t output the message whenever the user types in the same word twice.

Answer 1

if you notice, your code contains ; in places it should not contain.
for example, if you place it after a while (cin >> current) then code you wanted to run, won’t.

try this:

#include <iostream>

using namespace std;

int main(){

string previous = "";
string current = "";

while (cin>>current)
{
      if(current == previous)
      {
              cout<<"repeated word";
      }
      previous=current;

      }
}