Mega Code Archive
Loop through list back and forth
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/* The following code example is taken from the book
* "The C++ Standard Library - A Tutorial and Reference"
* by Nicolai M. Josuttis, Addison-Wesley, 1999
*
* (C) Copyright Nicolai M. Josuttis 1999.
* Permission to copy, use, modify, sell and distribute this software
* is granted provided this copyright notice appears in all copies.
* This software is provided "as is" without express or implied
* warranty, and with no claim as to its suitability for any purpose.
*/
#include <iostream>
#include <list>
#include <algorithm>
using namespace std;
void print (int elem)
{
cout << elem << ' ';
}
int main()
{
list<int> coll;
// insert elements from 1 to 9
for (int i=1; i<=9; ++i) {
coll.push_back(i);
}
// print all elements in normal order
for_each (coll.begin(), coll.end(), // range
print); // operation
cout << endl;
// print all elements in reverse order
for_each (coll.rbegin(), coll.rend(), // range
print); // operations
cout << endl;
}
/*
1 2 3 4 5 6 7 8 9
9 8 7 6 5 4 3 2 1
*/
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