set::max_size
abs
TOC
Collapse the table of content
Expand the table of content
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here. ArchiveDisclaimer

set::max_size (STL Samples) 

Illustrates how to use the set::max_size Standard Template Library (STL) function in Visual C++.


template<class _K, class _Pr, class _A>
   class set
   {
      public:
      // Function 1:
      size_type max_size() const;
   }

NoteNote

The class/parameter names in the prototype do not match the version in the header file. Some have been modified to improve readability.

The max_size function is used to determine the maximum number of elements the controlled sequence can contain.

// SetMax_size.cpp
// compile with: /EHsc
//
//      Illustrates how to use the max_size function to determine how
//      many elements the controlled sequence can contain.
//
// Functions:
//
//    max_size     Returns the maximum number of elements the controlled
//                 sequence can contain.
//
//////////////////////////////////////////////////////////////////////
#pragma warning(disable:4786)
#include <set>
#include <iostream>
#include <assert.h>

using namespace std;
typedef set<int> SET_INT; 

int main()
{
   SET_INT s1;
   cout << "s1.max_size() returned ";
   cout << s1.max_size() << endl;   // 1073741823 [value may vary]

   for (unsigned int x = 0 ; (x < 1000 && x < s1.max_size()) ; x++)

   assert(s1.insert(x).second);
   cout << "s1.size() returned ";
   cout << s1.size() << endl;   // 1000
}

The following output is for x86.

s1.max_size() returned 1073741823
s1.size() returned 1000

Header: <set>

Show:
© 2016 Microsoft