At this point, you have worked with both Windows and Linux systems. You have gone over data recovery and forensics tools for both operating systems. Compare the similarities, differences, and vulnerabilities of both operating systems.

Software licensing is a major problem in cloud computing. In a 3 to 4 page paper come up with several ideas to prevent an administrator from hijacking the authorization to use a software license. Make sure you adhere to the writing rubric, which includes citing your sourcesWriting Requirements3–4 pages in length (excluding cover page, abstract, and reference list)At least two peer reviewed sources that are properly cited and referencedAPA format, Use the APA template located in the Student Resource Center to complete the assignment.Please use the Case Study Guide as a reference point for writing your case study.

The third project involves modifying the attached interpreter so that it interprets programs for the complete language.You may convert all values to double values, although you can maintain their individual types if you wish. When the program is run on the command line, the parameters to the function should be supplied as command line arguments. For example, for the following function header of a program in the file text.txt: function main a: integer, b: integer returns integer;One would execute the program as follows: $ ./compile < test.txt 2 4In this case, the parameter a would be initialized to 2 and the parameter b to 4. An example of a program execution is shown below:$ ./compile < test.txt 2 41 function main a: integer, b: integer returns integer;2 c: integer is3 if a > b then4 a rem b;5 else6 a ** 2;7 endif;8 begin9 case a is10 when 1 => c;11 when 2 => (a + b / 2 - 4) * 3;12 others => 4;13 endcase;14 end;Compiled SuccessfullyResult = 0After the compilation listing is output, the value of the expression which comprises the body of the function should be displayed as shown above. The existing code evaluates some of the arithmetic, relational and logical operators together with the reduction statement. You are to add the necessary code to include all of the following: All additional arithmetic operators All additional relational and logical operators Both if and case statements Functions with multiple variables Functions with parametersThis project requires modification to the bison input file, so that it defines the additional the necessary computations for the above added features. You will need to add functions to the library of evaluation functions already provided in values.cc. You must also make some modifications to the functions already provided.Skeleton Files:listing.cc// Compiler Theory and Design// Dr. Duane J. Jarc// This file contains the bodies of the functions that produces the compilation// listing#include <cstdio>#include <string>using namespace std;#include "listing.h"static int lineNumber;static string error = "";static int totalErrors = 0;static void displayErrors();void firstLine(){ lineNumber = 1; printf("\n%4d ",lineNumber);}void nextLine(){ displayErrors(); lineNumber++; printf("%4d ",lineNumber);}int lastLine(){ printf("\r"); displayErrors(); printf(" \n"); return totalErrors;} void appendError(ErrorCategories errorCategory, string message){ string messages[] = { "Lexical Error, Invalid Character ", "", "Semantic Error, ", "Semantic Error, Duplicate Identifier: ", "Semantic Error, Undeclared " }; error = messages[errorCategory] + message; totalErrors++;}void displayErrors(){ if (error != "") printf("%s\n", error.c_str()); error = "";}listing.h// Compiler Theory and Design// Duane J. Jarc// This file contains the function prototypes for the functions that produce the // compilation listingenum ErrorCategories {LEXICAL, SYNTAX, GENERAL_SEMANTIC, DUPLICATE_IDENTIFIER, UNDECLARED};void firstLine();void nextLine();int lastLine();void appendError(ErrorCategories errorCategory, string message);parser.y/* Compiler Theory and DesignDuane J. Jarc */%{#include <iostream>#include <string>#include <vector>#include <map>using namespace std;#include "values.h"#include "listing.h"#include "symbols.h"int yylex();void yyerror(const char* message);Symbols<int> symbols;int result;%}%error-verbose%union{ CharPtr iden; Operators oper; int value;}%token <iden> IDENTIFIER%token <value> INT_LITERAL%token <oper> ADDOP MULOP RELOP%token ANDOP%token BEGIN_ BOOLEAN END ENDREDUCE FUNCTION INTEGER IS REDUCE RETURNS%type <value> body statement_ statement reductions expression relation term factor primary%type <oper> operator%%function: function_header optional_variable body {result = $3;} ; function_header: FUNCTION IDENTIFIER RETURNS type ';' ;optional_variable: variable | ;variable: IDENTIFIER ':' type IS statement_ {symbols.insert($1, $5);} ;type: INTEGER | BOOLEAN ;body: BEGIN_ statement_ END ';' {$$ = $2;} ; statement_: statement ';' | error ';' {$$ = 0;} ; statement: expression | REDUCE operator reductions ENDREDUCE {$$ = $3;} ;operator: ADDOP | MULOP ;reductions: reductions statement_ {$$ = evaluateReduction($<oper>0, $1, $2);} | {$$ = $<oper>0 == ADD ? 0 : 1;} ;expression: expression ANDOP relation {$$ = $1 && $3;} | relation ;relation: relation RELOP term {$$ = evaluateRelational($1, $2, $3);} | term ;term: term ADDOP factor {$$ = evaluateArithmetic($1, $2, $3);} | factor ; factor: factor MULOP primary {$$ = evaluateArithmetic($1, $2, $3);} | primary ;primary: '(' expression ')' {$$ = $2;} | INT_LITERAL | IDENTIFIER {if (!symbols.find($1, $$)) appendError(UNDECLARED, $1);} ;%%void yyerror(const char* message){ appendError(SYNTAX, message);}int main(int argc, char *argv[]){ firstLine(); yyparse(); if (lastLine() == 0) cout << "Result = " << result << endl; return 0;}scanner.l/* Compiler Theory and DesignDuane J. Jarc *//* This file contains flex input file */%{#include <string>using namespace std;#include "values.h"#include "listing.h"#include "tokens.h"%}%option noyywrapws [ \t\r]+comment \-\-.*\nline [\n]id [A-Za-z][A-Za-z0-9]*digit [0-9]int {digit}+punc [\(\),:;]%%{ws} { ECHO; }{comment} { ECHO; nextLine();}{line} { ECHO; nextLine();}"<" { ECHO; yylval.oper = LESS; return(RELOP); }"+" { ECHO; yylval.oper = ADD; return(ADDOP); }"*" { ECHO; yylval.oper = MULTIPLY; return(MULOP); }begin { ECHO; return(BEGIN_); }boolean { ECHO; return(BOOLEAN); }end { ECHO; return(END); }endreduce { ECHO; return(ENDREDUCE); }function { ECHO; return(FUNCTION); }integer { ECHO; return(INTEGER); }is { ECHO; return(IS); }reduce { ECHO; return(REDUCE); }returns { ECHO; return(RETURNS); }and { ECHO; return(ANDOP); }{id} { ECHO; yylval.iden = (CharPtr)malloc(yyleng + 1); strcpy(yylval.iden, yytext); return(IDENTIFIER);}{int} { ECHO; yylval.value = atoi(yytext); return(INT_LITERAL); }{punc} { ECHO; return(yytext[0]); }. { ECHO; appendError(LEXICAL, yytext); }%%symbols.h// Compiler Theory and Design// Dr. Duane J. Jarctemplate <typename T>class Symbols{public: void insert(char* lexeme, T entry); bool find(char* lexeme, T& entry);private: map<string, T> symbols;};template <typename T>void Symbols<T>::insert(char* lexeme, T entry){ string name(lexeme); symbols[name] = entry;}template <typename T>bool Symbols<T>::find(char* lexeme, T& entry){ string name(lexeme); typedef typename map<string, T>::iterator Iterator; Iterator iterator = symbols.find(name); bool found = iterator != symbols.end(); if (found) entry = iterator->second; return found;}values.cc// CMSC 430// Duane J. Jarc// This file contains the bodies of the evaluation functions#include <string>#include <vector>#include <cmath>using namespace std;#include "values.h"#include "listing.h"int evaluateReduction(Operators operator_, int head, int tail){ if (operator_ == ADD) return head + tail; return head * tail;}int evaluateRelational(int left, Operators operator_, int right){ int result; switch (operator_) { case LESS: result = left < right; break; } return result;}int evaluateArithmetic(int left, Operators operator_, int right){ int result; switch (operator_) { case ADD: result = left + right; break; case MULTIPLY: result = left * right; break; } return result;}values.h// CMSC 430// Duane J. Jarc// This file contains function definitions for the evaluation functionstypedef char* CharPtr;enum Operators {LESS, ADD, MULTIPLY};int evaluateReduction(Operators operator_, int head, int tail);int evaluateRelational(int left, Operators operator_, int right);int evaluateArithmetic(int left, Operators operator_, int right);