Question

C++

// Program Description: This program accepts three 3-letter words and prints out the reverse of each word

1. A main(. . . ) function and the use of std::cin and std::cout to read in data and write out data

   as described below.

2. Variables to hold the data read in using std::cin and a return statement.

#include <iostream >

int main(int argc, char *argv[]) {

.... your code goes here

}//main

Example usage:

>A01.exe
Enter three 3-letter space separated words, then press enter to display the reverse:
cat eye fix
tac eye xif
Enter any key to exit:

Answer 1

Code:

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
int reverse_words(string str)
{
   stack <char> stck;
   // Traverse given string and push all characters to stack until we see a space.
     
   for(int i=0;i<str.length();i++)
   {
       if(str[i]!=' ')
       {
           stck.push(str[i]);
       }
       else
       {
           while(stck.empty()==false)
           {
               cout << stck.top();
               stck.pop();
           }
           cout << " ";
       }
   }
   //There is no space after last word
   while(stck.empty()==false)
   {
       cout << stck.top();
       stck.pop();
   }
   return 0;
}
//main
int main()
{
   //Taking string as input
   cout << "Enter three 3-letter space separated words, then press enter to display the reverse:\n";
   std::string str;
   std::getline(std::cin,str);
   reverse_words(str);
   return 0;
}

Screenshot of the program:

Output: