CSC 330 Object Oriented Design Using STL Lab 6 Make the prog

CSC 330 Object Oriented Design Using STL Lab 6   

Make the program bellow to work and to produce the kind of output you see at the bottom.

#include <iostream> #include <vector> #include <string> #include <iterator> #include <algorithm> #include <functional>

using namespace std;

// This function reverses a string in place. For example, // if the original value of the string was \"cat\", the // value after reversing it is \"tac\". void reverse(string& s){ int i = 0, j = s.length() - 1; while(i < j){ swap(s[i++], s[j--]); } }

void main(){ // Create a vector of strings and allocate 100 elements worth of space // to start with. vector<string> theWords; theWords.reserve(100);

// Create an iterator that will iterate over the strings in the input // stream cin. Also create an iterator that matches the end of the input. istream_iterator<string> stringReader(cin); istream_iterator<string> stringReaderEOF;

// Read strings in one at a time and push them onto the vector. while(stringReader != stringReaderEOF){ theWords.push_back(*stringReader++); }

// Show the words. cout << \"The words read in are:\ \"; // 1: Fill in the function argument so that // the output from this statement will be the words, // one to a line. Do the same with each copy() // call in the code below. See the sample output. copy( );

//Make of copy of the input. vector<string> aCopy(theWords); // Now reverse all the strings in the copy and show the result. // 2: Complete the for_each call so that // it will reverse every string in the copy. for_each( ); cout << \"\ After reversing all the strings in the copy:\ \"; copy( );

// 3. Sort the original strings in descending order. // Complete the sort call so that this call will // sort the words in theWords in descending order. sort( ); cout << \"\ After sorting the strings in descending order:\ \"; copy( );


}


Sample output: the rain in spain falls mainly in the plain ^Z ^Z The words read in are: the rain in spain falls mainly in the plain

After reversing all the strings in the copy: eht niar ni niaps sllaf ylniam ni eht nialp

After sorting the strings in descending order: the the spain rain plain mainly in in falls Press any key to continue

Solution

#include <iostream>
#include <vector>
#include <string>
#include <iterator>
#include <algorithm>
#include <functional>
using namespace std;

// This function reverses a string in place. For example,
// if the original value of the string was \"cat\", the
// value after reversing it is \"tac\".
void reverseString(string& s){
   int i = 0, j = s.length() - 1;
   while(i < j){   swap(s[i++], s[j--]); }
};

int main(){
// Create a vector of strings and allocate 100 elements worth of space
// to start with.
   vector<string> theWords;
   theWords.reserve(100);
// Create an iterator that will iterate over the strings in the input
// stream cin. Also create an iterator that matches the end of the input.
   istream_iterator<string> stringReader(cin);
   istream_iterator<string> stringReaderEOF;

// Read strings in one at a time and push them onto the vector.
   while(stringReader != stringReaderEOF){   theWords.push_back(*stringReader++); }

// Show the words.
   cout << \"The words read in are:\ \";
// 1: Fill in the function argument so that
//    the output from this statement will be the words,
//    one to a line. Do the same with each copy()
//    call in the code below. See the sample output.
   copy( theWords.begin(), theWords.end(), std::ostream_iterator<string>( std::cout, \" \"));

//Make of copy of the input.
    vector<string> aCopy(theWords);
// Now reverse all the strings in the copy and show the result.
// 2: Complete the for_each call so that
//    it will reverse every string in the copy.
   for_each( aCopy.begin(), aCopy.end(), reverseString );
   cout << \"\ After reversing all the strings in the copy:\ \";
   copy( aCopy.begin(), aCopy.end(), ostream_iterator<string>( cout, \" \"));

// 3. Sort the original strings in descending order.
// Complete the sort call so that this call will
//    sort the words in theWords in descending order.
   //sort( theWords.begin(), theWords.end(), less_than<string> );
   cout << \"\ After sorting the strings in descending order:\ \";
   copy( theWords.begin(), theWords.end(), ostream_iterator<string>( cout, \" \"));

}