кугуууууур В

#include "pch.h"
#include <iostream>
#include<fstream>
#include<iomanip>
using  namespace std;
int main()
{
	ifstream in("input.txt");
	ofstream out("output.txt");
	char x;
	int q = 1;
	int c = 0;
	if (!in)
	{
		cout << "Cant open file" << endl;
		exit(-1);
	}
	while (in >> x && q != 4)
	{

		out << x << setw(6);

		switch (q)
		{
		case 1:
			if (x == 'Y')
			{
				q = 1;
				out << 1;
				c++;
			}
			else if (x == 'A')
			{
				q = 3;
				out << 7;

			}
			else if (x == 'B')
			{
				q = 2;
				out << 4;
			}

			else
			{
				q = 4;
				out << "error";
			}
			break;


		case 2:
			if (x == 'Y')
			{
				q = 1;
				out << 1;
			}
			else if (x == 'B')
			{
				q = 3;
				out << 4;
			}
			else if (x == 'A')
			{
				q = 3;
				out << 4;
			}
			else
			{
				q = 4;
				out << "error";
			}
			break;
		case 3:

			if (x == 'A')
			{
				q = 3;
				out << 7;
			}
			else if (x == 'B')
			{
				q = 3;
				out << 1;
			}
			else if (x == 'Y')
			{
				q = 1;
				out << 1;
			}

			else
			{
				q = 4;
				out << "error";
			}
			break;


		default: q = 4; break;

		}
		out << setw(6) << "q=" << q << endl;

	}
	out << endl;
	out << "c=" << c;
	in.close();
	out.close();
}