set::size (STL Samples)
Visual Studio 2005
Illustrates how to use the set::size Standard Template Library (STL) function in Visual C++.
template<class _K, class _Pr, class _A>
class set
{
public:
// Function 1:
size_type size() const;
}
Note
// SetSize.cpp
// compile with: /EHsc
//
// Illustrates how to use the size function to determine how
// many elements are in the controlled sequence.
//
// Functions:
//
// size Returns the number of elements in the controlled
// sequence.
//
//////////////////////////////////////////////////////////////////////
#pragma warning(disable:4786)
#include <set>
#include <iostream>
using namespace std ;
typedef set<int> SET_INT;
int main() {
SET_INT s1;
cout << "s1.size() returned ";
cout << s1.size() << endl; // 0
cout << "s1.insert(5)" << endl;
s1.insert(5);
cout << "s1.insert(8)" << endl;
s1.insert(8);
cout << "s1.insert(12)" << endl;
s1.insert(12);
cout << "s1.size() returned ";
cout << s1.size() << endl; // 3
}
