Question

[C++] 4.17 LAB: Print string in reverse 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 "Done", "done", or "d" for the line of text. Ex: If the input is: Hello there Hey done then the output is: ereht olleH yeH

Answer 1

The program illustrates the use of string manipulations.

String manipulation involves carrying out several operations (such as splitting and reversing of strings).

The program in C++ where comments are used to explain each line is as follows:

#include <bits/stdc++.h>

using namespace std;

int main(){

   //This declares a string variable

string str;

//This gets input for the variable

getline(cin, str);

//The following is repeated, until the user inputs "Done", "done" or "d"

while(str != "Done" && str !="done" && str !="d"){

    //This reverses the string

    reverse(str.begin(), str.end());

    //This prints the reversed string

    cout << str<<endl;

    //This gets another input

    getline(cin, str);

}  

return 0;

}

At the end of each loop, the reversed string is printed.

See attachment for sample run

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