In C++, which of the following libraries need to be included in order to deal with files?
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Q: what are best practices that are most important when using files in C#?
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- rite a menu driven C++ program to do the following:1. Read Employees information from a data file: Name, Hrs work, rate of pay2. Write the following data to an output text file. Name, Hrs work, rate of pay and Gross pay and net pay (tax 21%)3. Print employees checks with net pay.Must use Classes, Functions, Advance Files IO, pointers, arrays and C++ STLIn C++, what is the difference when using :: and the . symbol in OOP? just as the example below shows, because I am confused as to what the difference between the two are. For example: class Box{ private: string name; public: string set_name(string n); }; in main file: #include "Box.h" int main(){ cout << Box::set_name("my_name"); }Book reference: Windows PowerShell Step by Step 3rd Edition - Ed WilsonSubj: PWS0 - PowerShell Chapter 7 7. What is the use of “mandatory=$true” in the below advanced-function? Function Test-Mandatory { Param( [Parameter(mandatory=$true)] $name) "hello $name" } 8. What is the use of the ValueFromPipelineByPropertyName=$true in the below advanced-function? Function Test-PipedValueByPropertyName { Param ( [Parameter(ValueFromPipelineByPropertyName=$true)] $processname, [Parameter(ValueFromPipelineByPropertyName=$true)] $id ) Process {Write-Host $processname $id} } 9. What is the Param switch to enable an array of parameters?
- Write a menu driven C++ program to do the following: 1. Read Employees information from a data file: Name, Hrs work, rate of pay 2. Write the following data to an output text file. Name, Hrs work, rate of pay and Gross pay and net pay (tax 21%) 3. Print employees checks with net pay. Must use Classes, Functions, Advance Files IO, pointers, arrays and C++ STL.Write a Haskell program copyIo.hs which has two command line arguments called file1 andfile2. Copy file1 to file2, and give an error message is file1 does not exist or if file2 does exist.In C++, which command is opt to reserve space for variable value and which preprocessor directive is required to use that command.
- These are C++ Virtual Functions Please use comment lines to describe what each line will do and how. #include<iostream> class Base { public: virtual void show() { cout<< “In Base n”;} }; class Derived: public Base { public: void show() { cout<< “In Derived n”;} }; int main(void) { Base *bp = new Derived; bp->show(); Base &br = *bp; br.show(); return 0; }in c++. Paste working code using the outline above please.NOTES : In C Language Use basic code, dont use return, void, ect. Dont Use Stdlib.h library, use basic code Pay attention to constraints
- PLEASE READ MY NOTE FIRST. Note: The following are the contents of a flex file that will be used to implement a lexical analyzer for a subset of the C programming language. I cannot understand anything in the code given below, so I need your help. I need you to explain every section of the code to me step-by-step in detail. At the end, please summarize what the code is all about and how it is functioning. Here's the code from the Flex file: %option noyywrap %{ #include<bits/stdc++.h> using namespace std; ofstream yyoutlog; //output filestream for log file string loglist = ""; //list of tokens along with line numbers // define necessary c++ variables and functions here (if any) int lines = 1; %} /* Regular Definitions */ delim [ \t\v\r] /* write regular expressions for whitespace and newline */ ws newline letter_ [A-Za-z_] digit [0-9] /* write regular expressions for id, float and integers */ id %% {ws} { /* ignore whitespace */ } {newline} {…Need help with C++ Question Look at the code below and use the following comments to indicate the scope of the static variables or functions. Place the comment below the relevant line. Module scopeClass scopeFunction scope The code runs. Use onlinegdb.com to see it run. Module scope means global but only known in this source file. Class scope means global but only known by the class. Function scope means global but only known in the function. Code: #include <iostream> 2 3 static const int MAX_SIZE=10; 4 5 // Return the max value 6 static double max(double d1) 7 { 8 static double lastMax = 0; 9 lastMax = (d1 > lastMax) ? d1 : lastMax; 10 return lastMax; 11 } 12 13 // Singleton class only one instance allowed 14 class Singleton 15 { 16 public: 17 static Singleton& getSingleton() { return theOne; } 18 // Returns the Singleton 19 20 friend std::ostream& operator<<…C++ programming 2. What is the output of the following program (when embedded in a complete program)? void Fun( int& x, int y, int& z); int main( ) { int a, b, c; a = 10; b = 20; c = 30; Fun(a, b, c); cout << a << " " << b << " " << c << endl; return 0; } void Fun( int& x, int y, int& z) { cout << x << " " << y << " " << z << endl; x = 1; y = 2; z = 3; }