Palezehvat · Palezehvat · Dec 16, 2022 · Dec 21, 2022 · yurii-litvinov · Dec 20, 2022
diff --git a/lexerOfRealNumbers/lexerOfRealNumbers.sln b/lexerOfRealNumbers/lexerOfRealNumbers.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lexerOfRealNumbers", "lexerOfRealNumbers\lexerOfRealNumbers.vcxproj", "{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}.Debug|x64.ActiveCfg = Debug|x64
+		{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}.Debug|x64.Build.0 = Debug|x64
+		{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}.Debug|x86.ActiveCfg = Debug|Win32
+		{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}.Debug|x86.Build.0 = Debug|Win32
+		{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}.Release|x64.ActiveCfg = Release|x64
+		{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}.Release|x64.Build.0 = Release|x64
+		{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}.Release|x86.ActiveCfg = Release|Win32
+		{855B83FD-7DFD-46AC-82CE-C87C4D1556C9}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A7BA3005-37CA-45AB-810D-705CFC0F9F11}
+	EndGlobalSection
+EndGlobal
diff --git a/lexerOfRealNumbers/lexerOfRealNumbers/lexer.c b/lexerOfRealNumbers/lexerOfRealNumbers/lexer.c
@@ -0,0 +1,96 @@
+#include "lexer.h"
+#include <ctype.h>
+#include <string.h>
+
+bool isTheSequenceANumber(const char* string) {
+    size_t sizeString = strlen(string);
+    State state = startZero;
+    for (size_t i = 0; i < sizeString + 1; ++i) {
+        switch (state)
+        {
+        case startZero:
+            if (i == 0 && i + 1 == sizeString) {
+                return false;
+            }
+            if (isdigit(string[i])) {
+                state = first;
+                break;
+            }
+            return false;
+        case first:
+            if (i == sizeString) {
+                return true;
+            }
+            if (isdigit(string[i])) {
+                state = first;
+                break;
+            }
+            else if (string[i] == '.') {
+                state = second;
+                if (i + 1 == sizeString) {
+                    return false;
+                }
+                break;
+            }
+            else if (string[i] == 'E') {
+                state = fourth;
+                if (i + 1 == sizeString) {
+                    return false;
+                }
+                break;
+            }
+            return false;
+        case second:
+            if (i == sizeString) {
+                return true;
+            }
+            if (isdigit(string[i])) {
+                state = third;
+                break;
+            }
+            return false;
+        case third:
+            if (i == sizeString) {
+                return true;
+            }
+            if (string[i] == 'E') {
+                state = fourth;
+                if (i + 1 == sizeString) {
+                    return false;
+                }
+                break;
+            }
+            else if (isdigit(string[i])) {
+                state = third;
+                break;
+            }
+            return false;
+        case fourth:
+            if (i == sizeString) {
+                return true;
+            }
+            if (isdigit(string[i])) {
+                state = fifth;
+                break;
+            }
+            else if (string[i] == '+' || string[i] == '-') {
+                state = fifth;
+                if (i + 1 == sizeString) {
+                    return false;
+                }
+                break;
+            }
+            return false;
+        case fifth:
+            if (i == sizeString) {
+                return true;
+            }
+            if (isdigit(string[i])) {
+                state = fifth;
+                break;
+            }
+            return false;
+        }
+    }
+        return true;
+}
diff --git a/lexerOfRealNumbers/lexerOfRealNumbers/lexer.h b/lexerOfRealNumbers/lexerOfRealNumbers/lexer.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#include <stdbool.h>
+
+typedef enum State {
+	startZero,
+	first,
+	second,
+	third,
+	fourth,
+	fifth
+} State;
+
+//Checking whether the string is a real number or not
+bool isTheSequenceANumber(const char* string);
diff --git a/lexerOfRealNumbers/lexerOfRealNumbers/lexerOfRealNumbers.vcxproj b/lexerOfRealNumbers/lexerOfRealNumbers/lexerOfRealNumbers.vcxproj
@@ -0,0 +1,153 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>16.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{855b83fd-7dfd-46ac-82ce-c87c4d1556c9}</ProjectGuid>
+    <RootNamespace>lexerOfRealNumbers</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>false</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="lexer.c" />
+    <ClCompile Include="main.c" />
+    <ClCompile Include="test.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="lexer.h" />
+    <ClInclude Include="test.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
diff --git a/lexerOfRealNumbers/lexerOfRealNumbers/lexerOfRealNumbers.vcxproj.filters b/lexerOfRealNumbers/lexerOfRealNumbers/lexerOfRealNumbers.vcxproj.filters
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Исходные файлы">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Файлы заголовков">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="Файлы ресурсов">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.c">
+      <Filter>Исходные файлы</Filter>
+    </ClCompile>
+    <ClCompile Include="lexer.c">
+      <Filter>Исходные файлы</Filter>
+    </ClCompile>
+    <ClCompile Include="test.c">
+      <Filter>Исходные файлы</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="lexer.h">
+      <Filter>Исходные файлы</Filter>
+    </ClInclude>
+    <ClInclude Include="test.h">
+      <Filter>Исходные файлы</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
diff --git a/lexerOfRealNumbers/lexerOfRealNumbers/main.c b/lexerOfRealNumbers/lexerOfRealNumbers/main.c
@@ -0,0 +1,21 @@
+#include "lexer.h"
+#include "test.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+int main() {
+    if (test()) {
+        printf("Tests correct!\n");
+    } else {
+        printf("ERROR...\n");
+        return -1;
+    }
+    printf("Input string no more than 100 symbols\n");
+    char string[101] = { '\0' };
+    scanf_s("%s", string, 100);
+    if (isTheSequenceANumber(string)) {
+        printf("It is number\n");
+    } else {
+        printf("It is not number\n");
+    }
+}
diff --git a/lexerOfRealNumbers/lexerOfRealNumbers/test.c b/lexerOfRealNumbers/lexerOfRealNumbers/test.c
@@ -0,0 +1,8 @@
+#include "test.h"
+#include "lexer.h"
+
+bool test() {
+    return isTheSequenceANumber("1E4") && !isTheSequenceANumber("1.E4") && isTheSequenceANumber("1.2E4")
+        && isTheSequenceANumber("1.4") && isTheSequenceANumber("1.4E+45") && !isTheSequenceANumber("1.4E-")
+        && isTheSequenceANumber("14E-2") && isTheSequenceANumber("14");
+}
diff --git a/lexerOfRealNumbers/lexerOfRealNumbers/test.h b/lexerOfRealNumbers/lexerOfRealNumbers/test.h
@@ -0,0 +1,6 @@
+#pragma once
+
+#include <stdbool.h>
+
+//Test for checking whether the string is a real number or not
+bool test();