Copy STL Algorithm

Copy STL Algorithm

The copy()algorithm copies a sequence beginning at start and ending with end, putting the result into the sequence pointed to by result. It returns a pointer to the end of the resulting sequence. The range to be copied must not overlap with result.

Syntax:

template <class InputIterator, class OutputIterator>
 OutputIterator copy ( InputIterator first, InputIterator last, OutputIterator result );

Copy range of elements
Copies the elements in the range [first,last) into a range beginning at result.
Returns an iterator to the last element in the destination range.

Implementation of copy algorithm


#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

typedef int type;

int main () {
 int list[]={1,2,4,7,8,9,10};
 vector<type> vec0(7);
 vector<type>::iterator it;

cout << "contains befor the copy:";
 for (it=vec0.begin(); it!=vec0.end(); ++it)
 cout << " " << *it;

cout << endl;

copy ( list, list+7, vec0.begin() );

cout << "contains after the copy:";
for (it=vec0.begin(); it!=vec0.end(); ++it)
cout << " " << *it;

cout << endl;

return 0;
}//end of main

Program Output:

contains befor the copy: 0 0 0 0 0 0 0
contains after the copy: 1 2 4 7 8 9 10
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