#include <windows.h>
#include <iostream>
#include <fstream>
#include <string.h>
using namespace std;
int main()
{
	char filename[260];
	char search_str[256];
	char* file;
	const char* forbid = "*\"<>?|";
	const char* ferrmsg = "����������� ������ � ����� �����";
	SetConsoleCP(1251); 
	SetConsoleOutputCP(1251);
							  
							  
	cout << "������� ��� �����: ";
	cin.getline(filename, sizeof(filename));

	
	
	for (int i = 0; filename[i]; i++)
	{
		if (strchr(forbid, filename[i]) != 0)
		{
			cout << ferrmsg << endl;
			system("pause");
			return 0;
		}
	}
	
	for (int i = 0; filename[i]; i++)
		filename[i] = tolower(filename[i]);
	char* semicolon = strchr(filename, ':');
	if (semicolon)
	{
		if (semicolon - filename != 2)
		{
			cout << ferrmsg << endl;
			system("pause");
			return 0;
		}
		if (*(semicolon + 1) != '\\')
		{
			cout << ferrmsg << endl;
			system("pause");
			return 0;
		}
		if (strrchr(filename, ':') != semicolon)
		{
			cout << ferrmsg << endl;
			system("pause");
			return 0;
		}
		char* name = strrchr(filename, '\\');
		if (!name)
			name = filename;
		else
			name++;
		char* ext = strchr(name, '.');
		
		if (!ext)
			strcat_s(filename, sizeof(filename), ".txt");
		else
		{
			if (strcmp(ext, "txt") != 0)
			{
				cout << "����������� ����������." << endl;
				system("pause");
				return 0;
			}
		}

	}
	
	fstream fin(filename, ios::in);
	if (fin.fail())	
	{
		cout << "�� ������� ������� ���� " << filename << endl;
		system("pause");
		return 0;
	}
	
	
	
	fin.seekg(0, ios_base::end);
	size_t len = fin.tellg();
	fin.seekg(0, ios_base::beg);

	file = new char[len + 1];


	fin.read(file, len);
	fin.close();
	file[len] = 0;

	cout << "������� ������: ";
	cin.get(search_str, sizeof(search_str));

	int count = 0;
	for (char* r = strstr(file, search_str); r;)
	{
		count++;
		r += strlen(search_str);
		r = strstr(r, search_str);
	}
	cout << "������ ������� � ����� " << count << " ���." << endl;

	delete[] file;
	system("pause");
	return 0;
}