std::copy() function in C++ STL

The std::copy is a library function of algorithm header of C++ Standard Library which is used to copy the elements of a container. This function copies all the elements of a container for the given range to another container.

Syntax:

std::copy(Iterator startingAddress, Iterator endingAddress, Iterator targetStart);

Parameter: The std::copy() function accepts the following parameters that are given below:

1. startingAddress: This parameter is the address of the starting element of the source container.
2. endingAddress: This parameter is the address of the ending element of the source container.
3. targetStart: This parameter is the address of the starting element of the target container.

Example of std::copy() Function

Program

#include <iostream>

#include <algorithm>

#include <vector>

using  namespace std;

void  print_array(int data[], int n)

{

for(int i = 0; i < n; ++i)

cout << data[i]  <<  " ";

}

int  main()

{

int Source[] = { 1, 2, 3, 4, 5};

int Target[5];

copy(Source, Source + 5, Target);

cout <<  "Source: ";

print_array(Source, 5);

cout << endl;

cout <<  "Target: ";

print_array(Target, 5);

return 0;

}

Output

Source: 1 2 3 4 5

Target: 1 2 3 4 5