// This program demonstrates the find_if algorithm.
// The find_if algorithm is NOT a method!  It’s a function.

#include <algorithm>	    // for find_if
#include <set>
#include <iostream>

using namespace std;

int main() {
    set<int> s = { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41,
		   43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 };

    auto it = find_if(s.begin(), s.end(),
		      [](int n){return n>20 && n<25;});

    if (it == s.end())
	cout << "Failure\n";
    else
	cout << "Success, *it=" << *it << '\n';
}