- The C Standard Library
- The C Standard Library
- The C++ Standard Library
- C++ Library - Home
- C++ Library - <fstream>
- C++ Library - <iomanip>
- C++ Library - <ios>
- C++ Library - <iosfwd>
- C++ Library - <iostream>
- C++ Library - <istream>
- C++ Library - <ostream>
- C++ Library - <sstream>
- C++ Library - <streambuf>
- C++ Library - <atomic>
- C++ Library - <complex>
- C++ Library - <exception>
- C++ Library - <functional>
- C++ Library - <limits>
- C++ Library - <locale>
- C++ Library - <memory>
- C++ Library - <new>
- C++ Library - <numeric>
- C++ Library - <regex>
- C++ Library - <stdexcept>
- C++ Library - <string>
- C++ Library - <thread>
- C++ Library - <tuple>
- C++ Library - <typeinfo>
- C++ Library - <utility>
- C++ Library - <valarray>
- The C++ STL Library
- C++ Library - <array>
- C++ Library - <bitset>
- C++ Library - <deque>
- C++ Library - <forward_list>
- C++ Library - <list>
- C++ Library - <map>
- C++ Library - <queue>
- C++ Library - <set>
- C++ Library - <stack>
- C++ Library - <unordered_map>
- C++ Library - <unordered_set>
- C++ Library - <vector>
- C++ Library - <algorithm>
- C++ Library - <iterator>
- C++ Programming Resources
- C++ Programming Tutorial
- C++ Useful Resources
- C++ Discussion
C++ Vector Library - push_back() Function
Description
The C++ function std::vector::push_back() inserts new element at the end of vector and increases size of vector by one.
Declaration
Following is the declaration for std::vector::push_back() function form std::vector header.
C++98
void push_back (const value_type& val);
C++11
void push_back (const value_type& val); void push_back (value_type&& val);
Parameters
None
Return value
None.
Exceptions
This member function never throws exception.
Time complexity
Constant i.e. O(1)
Example
The following example shows the usage of std::vector::push_back() function.
#include <iostream> #include <vector> using namespace std; int main(void) { vector<int> v; /* Insert 5 elements */ for (int i = 0; i < 5; ++i) v.push_back(i + 1); for (int i = 0; i < v.size(); ++i) cout << v[i] << endl; return 0; }
Let us compile and run the above program, this will produce the following result −
1 2 3 4 5
vector.htm
Advertisements