Question

Write a program that takes in a line of text as input, and outputs that line of text in reverse. The program repeats, ending when the user enters "Quit", "quit", or "q" for the line of text.

Ex: If the input is:

Hello there
Hey
quit

then the output is:

ereht olleH
yeH

There is a mistake in my code I can not find. my output is : 

ereht olleH ereht olleHyeH

How can I fix this?

I saw some people use void or the function reverse but we didnt learn about that yet.

thank you for your help :)

#include

#include

using namespace std;

int main() {

   

  string input;

  getline (cin, input);

  string new_input;

 

 // until user input Quit quit q

 

 while ( input != "Quit" && input != "quit" && input != "q") {

 

 // output in reverse

 

 for (int i = input.length()-1; i >= 0; --i){

    new_input.push_back(input[i]);

  

  }

    cout << new_input << endl;

   cin >> input;  

    }

  return 0;

}

Answer 1

#include
#include
#include
#include

using namespace std;

string reverse(string orig_string);
int main() {
/*
* Declaring the constant
*/
   const int SIZE=100;
   /*
* Declaring the variables
*/
   int count=0;
   string arr[SIZE];
   string str;
  
   /*
* Getting the input entered by the user and
   * populate those strins into an array until the user enters "Quit" or "quit"
*/
   getline(cin,str);
   while(str.compare("quit")!=0 && str.compare("Quit")!=0 && str.compare("q")!=0 && str.compare("Q")!=0)
   {
       arr[count]=str;
       count++;
       getline(cin,str);
   }
  
   /*
* Displaying the strings reversely
*/
   cout<<"Displaying the reverse strings :"<   for(int i=0;i   {
       string rev=reverse(arr[i]);
       cout<   }
  
   return 0;
}
/*
* This function will reverse the string and return to the caller
*/
string reverse(string orig_string)
{
   string rev_string="";
  
/*
   * This for loop will reverse the string
   */
for(int i=orig_string.length()-1;i>=0;i--)
{
rev_string+=orig_string.at(i);
}
return rev_string;
}

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Output: