Std::vector::size

Syntax

size_type size() const;

Description

Return size

Returns the number of elements in the vector.

This is the number of actual objects held in the vector, which is not necessarily equal to its storage capacity.

Parameters

none

Return Value

The number of elements in the container.

Member type size_type is an unsigned integral type.

Example

The above example will output 5.

#include <iostream>
#include <vector>
#include <string>
using namespace std;

int main()
{
  vector<int> tab(5);
  cout << tab.size() << endl;
  return 0;
}