The sample code below illustrates how to use the list::list
STL functions in Visual C++.
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Required Header
<list>
explicit list(const A& al = A());
explicit list(size_type n, const T& v = T(), const A& al = A());
list(const list& x);
list(const_iterator first, const_iterator last, const A& al = A());
: The class/parameter names in the prototype may not match the
version in the header file. Some have been modified to improve readability.
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Description
The first constructor specifies an empty initial controlled
sequence. The second constructor specifies a repetition of n elements of value
x. The third constructor specifies a copy of the sequence controlled by x. The
last constructor specifies the sequence [first, last). All constructors store
the allocator object al, or for the copy constructor, x.get_allocator(), in
allocator and initialize the controlled sequence.
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Sample Code
//////////////////////////////////////////////////////////////////////
//
// Compile options needed: -GX
//
// list.cpp : demonstrates the different constructors for list<T>
//
// Functions:
//
// list::list
//
// Written by Andrew Bradnan
// Copyright (c) 1996 Microsoft Corporation. All rights reserved.
//////////////////////////////////////////////////////////////////////
#include <list>
#include <string>
#include <iostream>
#if _MSC_VER > 1020 // if VC++ version is > 4.2
using namespace std; // std c++ libs implemented in std
#endif
typedef list<string, allocator<string> > LISTSTR;
// Try each of the four constructors
void main()
{
LISTSTR::iterator i;
LISTSTR test; // default constructor
test.insert(test.end(), "one");
test.insert(test.end(), "two");
LISTSTR test2(test); // construct from another list
LISTSTR test3(3, "three"); // add several <T>'s
LISTSTR test4(++test3.begin(), // add part of another list
test3.end());
// Print them all out
// one two
for (i = test.begin(); i != test.end(); ++i)
cout << *i << " ";
cout << endl;
// one two
for (i = test2.begin(); i != test2.end(); ++i)
cout << *i << " ";
cout << endl;
// three three three
for (i = test3.begin(); i != test3.end(); ++i)
cout << *i << " ";
cout << endl;
// three three
for (i = test4.begin(); i != test4.end(); ++i)
cout << *i << " ";
cout << endl;
}
Program Output is:
one two
one two
three three three
three three
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Visual C++ Books On Line: Visual C++ Books:C/C++:Standard
C++ Library Reference.
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