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// Boost.Function library examples
// Copyright (C) 2001 Doug Gregor (gregod@cs.rpi.edu)
//
// Permission to copy, use, sell and distribute this software is granted
// provided this copyright notice appears in all copies.
// Permission to modify the code and to distribute modified code is granted
// provided this copyright notice appears in all copies, and a notice
// that the code was modified is included with the copyright notice.
//
// This software is provided "as is" without express or implied warranty,
// and with no claim as to its suitability for any purpose.
// For more information, see http://www.boost.org
#include <iostream>
#include <boost/function.hpp>
void do_sum_avg(int values[], int n, int& sum, float& avg)
{
sum = 0;
for (int i = 0; i < n; i++)
sum += values[i];
avg = (float)sum / n;
}
int
main()
{
// The second parameter should be int[], but some compilers (e.g., GCC)
// complain about this
boost::function<void, int*, int, int&, float&> sum_avg;
sum_avg = &do_sum_avg;
int values[5] = { 1, 1, 2, 3, 5 };
int sum;
float avg;
sum_avg(values, 5, sum, avg);
std::cout << "sum = " << sum << std::endl;
std::cout << "avg = " << avg << std::endl;
return 0;
}
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