exceptions added

Exceptions.cpp

@@ -0,0 +1,22 @@
+#include"Exceptions.h"
+BaseException::BaseException(const string& message) {
+	this->message = message;
+}
+string InputError::what() const {
+	return message;
+}
+InputError::InputError(const string& message) :BaseException(message) {
+	
+}
+string FileError::what() const {
+	return message;
+}
+FileError::FileError(const string& message) :BaseException(message) {
+
+}
+string IndexError::what() const {
+	return message;
+}
+IndexError::IndexError(const string& message) :BaseException(message) {
+
+}

Exceptions.h

@@ -0,0 +1,32 @@
+#pragma once
+#include<fstream>
+#include<iomanip>
+#include<iostream>
+#include<string>
+#include<vector>
+using namespace std;
+class BaseException {
+public:
+	BaseException(const string& message);
+
+	virtual string what() const=0;
+	string message;
+};
+class InputError :public BaseException {
+public:
+	InputError(const string& message);
+
+	virtual string what() const;
+};
+class FileError :public BaseException {
+public:
+	FileError(const string& message);
+
+	virtual string what() const;
+};
+class IndexError :public BaseException {
+public:
+	IndexError(const string& message);
+
+	virtual string what() const;
+};