Declaration

template <class InputIterator, class Function>
Function for_each(
	InputIterator xFirst,
	InputIterator xLast,
	Function xFunct
);

Description

This function applies the function "xFunct" to each item in the range starting from "xFirst" up to the entry before "xLast."

Header Include

#include <algorithm>

Example

#include <iostream>
#include <vector>
#include <algorithm>

void Increment(char& crChar) {
	++crChar;
}

int main()
{
	using namespace std;

	// Create a vector instance
	vector<char> qV;
	qV.push_back('X');
	qV.push_back('o');
	qV.push_back('a');
	qV.push_back('X');
	qV.push_back('.');
	qV.push_back('n');
	qV.push_back('e');
	qV.push_back('t');

	vector<char>::iterator qIter;
	// Output the vector
	cout << "Original: ";
	for (qIter = qV.begin(); qIter != qV.end(); ++qIter) {
		cout << *qIter;
	}
	cout << endl;

	// Apply the increment to the last four entries
	for_each(qV.begin() + 4, qV.end(), Increment);

	// Output the vector after the increment
	cout << "Incremented: ";
	for (qIter = qV.begin(); qIter != qV.end(); ++qIter) {
		cout << *qIter;
	}
	cout << endl;

	// Keep the window open
	cin.get();
	return 0;
}

Output