Different methods to copy in C++ STL and its uses with code

//

//  main.cpp

//  Exp

//

//  Created by Manish on 07/11/19.

//  Copyright © 2019 Manish. All rights reserved.

//

#include <iostream>

#include <vector>

#include<algorithm>

using namespace std;

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

    //1

    //copy**************************************************

    vector<string> sourceA={"a","b","c","d","e","f","g","h"};

    vector<string> dest={"A","B","C","D","E","F","G","H"};

    //copy a to d and replace A to D in dest

    copy(sourceA.begin(), sourceA.begin()+4, dest.begin());

    

    for(auto x:dest)

    {

        cout<<x<<endl;

    }

    

    

    cout<<"---------------------"<<endl;

    

    //2

    //copy if**********************************************//get only two element which is greator than 10

    vector<int> vectorB={2,4,6,8,10,12,14,16,18,20};

    vector<int> result={0,0};

    copy_if(vectorB.begin(), vectorB.end(), result.begin(), [](int x){

        return x>10;

    });

    

    for(auto x:result)

    {

        cout<<x<<endl;

    }

    

    cout<<"---------------------"<<endl;

    //3

    //copy_n copy but second parameter is how many items you want to copy from source to destination

    

    

    vector<string> sourceN={"a","b","c","d","e","f","g","h"};

    vector<string> destN={"A","B","C","D","E","F","G","H"};

    //copy first three item in destination

    copy_n(sourceN.begin(), 3, destN.begin());

    

    for(auto x:destN)

    {

        cout<<x<<endl;

    }

     cout<<"---------------------"<<endl;

    //4

    //copy backwards

    vector<int> vectorBC={1,2,3,4,5,7};

    vector<int> resultBC={10,20,30,40,50,60,70};

    

    //copy element from source to destination from backwards

    copy_backward(vectorBC.begin(), vectorBC.begin()+3, resultBC.end()-1);

    for(auto x:resultBC)

    {

        cout<<x<<endl;

    }

    

    cout<<"---------------------"<<endl;

    

}

copy and run the above all example are running example