) Ο Ο Ο ?++What is std in C اختر أحد الخيارات ++a. std is a standard class in C ++b. std is a standard header file in C ++c. std is a standard namespace in C ++d. std is a standard file reading header in C
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- Write a code in c++ to open a file called romania.txt for appending, only for a relevant code. You may assign any file objectWAP in c++ that reads the file FIRST.TXT and creates a new file named SECOND.TXT, to contain only those words from the file FIRST.TXT which start with a lowercase vowel. [ i have already asked this question but u gave the wrong answer ...plz give correct answer i have to prepare for my exams ]Implement in C Programming 9.9.1: LAB: Thesaurus Given a set of text files containing synonyms for different words, complete the main program to output the synonyms for a specific word. Each text file contains synonyms for the word specified in the file’s name, and the synonyms within the file are grouped according to the synonyms' first letters, separated by an '*'. The program reads a word and a letter from the user and opens the text file associated with the input word. The program then stores the contents of the text file into a two-dimensional array of char* predefined in the program. Finally the program searches the array and outputs all the synonyms that begin with the input letter, one synonym per line, or a message if no synonyms that begin with the input letter are found. Hints: Use the malloc() function to allocate memory for each of the synonyms stored in the array. A string always ends with a null character ('\0'). Use ASCII values to map the row index of the array to the…
- Write in C++ in 2 different programs/files. One will have the code for wzip and one will have the code for wzip. Description: wzip and wunzip class overview: The next tools you will build come in a pair, because one (wzip) is a file compression tool, and the other (wunzip) is a file decompression tool. The type of compression used here is a simple form of compression called run-length encoding (RLE). RLE is quite simple: when you encounter n characters of the same type in a row, the compression tool (wzip) will turn that into the number n and a single instance of the character. Thus, if we had a file with the following contents: aaaaaaaaaabbbb the tool would turn it (logically) into: 10a4b The exact format of the compressed file is quite important; here, you will write out a 4-byte integer in binary format followed by the single character in ASCII. Thus, a compressed file will consist of some number of 5-byte entries, each of which is comprised of a 4-byte integer (the…Q1 :- Fill in the missing blank for the given code. 1:- Sample.cpp #include<iostream> using namespace std; class Sample{ public: int number; friend ostream &operator<<(_____(1)_____ &os, const Sample & s ) { os << s.number; return os; } friend istream &operator>>(_____(2)_____ &is, Sample &s ) { is >> s.number; return is; } }; 2:- Main.cpp #include "Sample.cpp" #include<iostream> using namespace std; int main(){ Sample s1; _____(3)_____; _____(4)_____; return 0; } --------------------------------------------------------------------------------- Q2 :- Fill in the missing blank for the given code. 1:- SAMPLE.CPP #include<iostream> using namespace std; class Sample{ public: int number; Sample _____(1)_____(Sample& a) { Sample b; b.number = this->number+a.number; return b; } }; 2:-…Read a C++ Source code file. Parse the tokens and place them into a file called outParse.txt. Hint: Might be nice to have a function to return a bool that says a character is a valid first character of an identifier. Might be nice to have a function to return a bool that says a character is a valid subsequent character in an identifier. // File: TestSource.cpp#include <iostream>using namespace std;void putStars(int n){while (n--){cout << "*";}}void homeworkHeader(string title){cout << "Ticket 00451 CMPR 129 Computer Organization \"super cool\" ";cout << "Project : " << title << endl;}double math(){double a = 34.56E07;a=123.45;a = 34E-9;a = 2.4e+23;a = 1234567890123;a = 23.45 + 12E-5;a = sqrt(33.44);a = pow(a, 3);if (a != 0.0 && a >= 12 || a < -33.45 || a <= 46)cout << " crazy code\b \t \n\n";char c = 'u';c = '\t';cin >> c;return a;}int NotMain () {cout << " test code does not really run or do anything real.…
- Write a recursive function, displayFiles, that expects a pathname as an argument. The path name can be either the name of a file or the name of a directory. If the pathname refers to a file, its filepath is displayed, followed by its contents, like so: File name: file_path Lorem ipsum dolor sit amet, consectetur adipiscing elit... Otherwise, if the pathname refers to a directory, the function is applied to each name in the directory, like so: Directory name: directory_path File name: file_path1 Lorem ipsum dolor sit amet... File name: file_path2 Lorem ipsum dolor sit amet... ... # Put your code here import os #module used to interact with operating system def displayFiles(pathname): #recursive function that takes a pathname as argument if (os.path.isdir(pathname)): #checks if specified path (argument) is an existing directory #for item in os.listdir(pathname): for content in os.listdir(pathname): #gets the list of all files and directories in the directory and…Write a recursive function, displayFiles, that expects a pathname as an argument. The path name can be either the name of a file or the name of a directory. If the pathname refers to a file, its filepath is displayed, followed by its contents, like so: File name: file_path Lorem ipsum dolor sit amet, consectetur adipiscing elit... Otherwise, if the pathname refers to a directory, the function is applied to each name in the directory, like so: Directory name: directory_path File name: file_path1 Lorem ipsum dolor sit amet... File name: file_path2 Lorem ipsum dolor sit amet... ...Write Program in C. A formatted file master.txt contains the employee code, name and basic pay of employees of an organization. Write a program to calculate the D.A(dearness allowance), H.R.A (House rent allowance) and gross income of each employee and store employee code, name, basic pay, D.A,H.R.A and gross income to the file emp.txt, where D.A is the 32% of basic pay, H.R.A is 15% of basic pay and gross pay is the sum of basic pay, D.A and H.R.A.
- Our requirement is to keep information of students who are taking “Introduction to Python” in Fall-2021 in a text file named ‘Students.txt’. The first line of text in this file will be header line as follows Write a python code that: Takes StudentID from user as input in a variable ‘inputID’, reads the file line by line and displays the header line and student information when inputID is found in Students.txt, otherwise display a message ‘Record not found in Students.txt’Write a C++ program to create a file “STORY.txt” which contains following lines:“The rose is red.A girl is playing there.There is a playground.An aeroplane is in the sky.Numbers are not allowed in the password.”Then write a function in C++ to count and display the number of lines not starting with alphabet 'A'present in a text file.I need complete explanation of c++ code line by line. Need Explanation of all lines of code what is happening in this code where the data is stored.? Code #include <iostream>#include <iomanip>#include <time.h>#include <fstream>#include <conio.h>#include <string.h>#include <stdlib.h>using namespace std;class Bank {public:};class ATMAccountHolders:public Bank{string accountHolders;string accountHoldersAddress, branch;int accountNumber;double startBalance;double accountBalance; double amount;int count;public:void deposit();void withdraw();void accountExit();ATMAccountHolders(){accountNumber = 7787;accountHolders = " Ammad Naseer";accountHoldersAddress = " House no.112";startBalance = 6000.00;accountBalance = 6000.00;branch = " Islamabad";amount = 20000; }}; void ATMAccountHolders::deposit(){system("cls"); cout<<" ATM ACCOUNT DEPOSIT SYSTEM ";cout<<"\n\nThe Names of the Account Holders are…