Function return issue

[panconcafe]

Hello!I have an issue with my result method that underlines red when I return out (in the Token_Taking.cpp). It says "the return value does not match function type.
The print_result method takes an ostream as its only argument and returns void. It first checks whether path is empty. If it is empty, then writes a message. If it is not empty, then it writes all the characters in the vector in order to generate a sequence.

//Token_Taking.h
#ifndef TOKEN_TAKING_H
#define TOKEN_TAKING_H

using namespace std;

class Token_Taking {
public:

	Token_Taking(); //Constructor
	
	//Class method
	bool play(unsigned int);
	void result(ostream&) const;

private:

	const unsigned int target;
	unsigned int turns;
	vector<char> pattern; 
						
};
#endif 

//Token_Taking.cpp
#include "Game.h"

const unsigned int target = 27;
Token_Taking::Token_Taking(): target(), turns(){
	vector<char> pattern;
}	

bool Token_Taking::play(unsigned int tokens) {

	if (tokens == target) { return true; } 
	if (turns == 0 || turns != tokens) { return false; }

	if (tokens % 2 == 1) { 
		pattern.push_back('A'); 
		tokens += 39; 
		turns -= 1;
		return true;
	}
	if (play(tokens + 39)) { 
		return true; 
	}
	else { 
		turns++; 
		pattern.pop_back();
		return false;
	}
	
	if (tokens % 2 == 0) {

		pattern.push_back('B');
		tokens = tokens + (tokens / 2);
		turns -= 1;
		return true;
		
	}
}
	

void Token_Taking::result(ostream& out) const {

	if (!pattern.size()) {
		out << "Error" << std::endl;

	}

	else {

		for (size_t i = 0; i < pattern.size(); i++) {
			out << pattern.at(i);
		}
		out << std::endl;
	}
}

//Main.cpp
#include "Token_Taking.h"
#include <iostream>
#include <fstream>


using namespace std;

int main() {
	ifstream fin("input.txt");
	if (!fin) {
		cout << "Error" << endl;
		system("pause");
		return -1;
	}
	ofstream fout("output.txt");

	unsigned int target, turns;
	Game player;
	while (fin >> target>>turns) {
	
		player.play(turns);
		player.result(fout);
		
	}
	fin.close();
	fout.close();

	system("pause");
	return 0;
}

[lastchance]

Game::print_result is a void function; i.e., by definition it returns nothing. Since out is passed by reference you don't need to return it.

You can simply delete the line that you say underlines as red.

[panconcafe]

Perfect! My program compiled correctly. By any chance, can you help me with my recursive method. I tested it and I got all "Dead End".
The expected sequence was:
AAABBA
Dead End
AAAAAAABBAB
ABABBA
Dead End

I'm not sure what else is missing, can you give me some insight?
Here is the input
75 6
72 2
57 11
57 6
57 5

I can clear you any detail!

[lastchance]

You appear to have at least three variables called target - in main, as a global variable in game.cpp, and as a data member of Game.

Which one is used in Game::play I'm not sure - however it certainly won't be the one that you input in main().

[panconcafe]

Oh, I was not sure on how to initialize the constructor and how to pass the values in there.

In the main(), I named them like that because the first column of the input is the target values and the next column are the turn values.