- Mastering C++ Programming
- Jeganathan Swaminathan
- 105字
- 2025-02-23 00:02:00
Commonly used vector APIs
The following table shows some commonly used vector APIs:
It would be really fun and convenient to read and print to/from the vector using istream_iterator and ostream_iterator. The following code demonstrates the use of a vector:
#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
using namespace std;
int main () {
vector<int> v;
cout << "\nType empty string to end the input once you are done feeding the vector" << endl;
cout << "\nEnter some numbers to feed the vector ..." << endl;
istream_iterator<int> start_input(cin);
istream_iterator<int> end_input;
copy ( start_input, end_input, back_inserter( v ) );
cout << "\nPrint the vector ..." << endl;
copy ( v.begin(), v.end(), ostream_iterator<int>(cout, "\t") );
cout << endl;
return 0;
}
Note that the output of the program is skipped, as the output depends on the input entered by you. Feel free to try the instructions on the command line.