funadap.cpp

// funadap.cpp -- using function adapters
#include <iostream>
#include <vector>
#include <iterator>
#include <algorithm>
#include <functional>

void Show(double);
const int LIM = 5;
int main()
{
	using namespace std;
	double arr1[LIM] = {36, 39, 42, 45, 48};
	double arr2[LIM] = {25, 27, 29, 31, 33};
	vector<double> gr8 (arr1, arr1 + LIM);
	vector<double> m8 (arr2, arr2 + LIM);
	cout.setf(ios_base::fixed);
	cout.precision(1);
	cout << "gr8: \t";
	for_each (gr8.begin(), gr8.end(), Show);
	cout << endl;
	cout << "m8: \t";
	for_each (m8.begin(), m8.end(), Show);
	cout << endl;
	vector<double> sum(LIM);
	transform (gr8.begin(), gr8.end(), m8.begin(), sum.begin(),
			plus<double>());
	cout << "sum: \t";
	for_each (sum.begin(), sum.end(), Show);
	cout << endl;

	vector<double> prod (LIM);
	transform (gr8.begin(), gr8.end(), prod.begin(),
			bind1st (multiplies<double>(), 2.5));
	cout << "prod: \t";
	for_each (prod.begin(), prod.end(), Show);
	cout << endl;

	return 0;
}

void Show (double v)
{
	std::cout.width(6);
	std::cout << v << ' ';
}