Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).

Erroneous access to protected variable fields

jules

Please help solve this problem! There's an employee in the program with a field protected. In the zarplata function, I'm trying to change this field's variable data through the index (the employee class target that indicator k indicates has been created in advance), but the program is making a mistake in access to the field. See code below.

class employee//сотрудник
{
protected:
    string name;
    string surname;
    string patronymic;
    double salary = 0;
};
void zarplata(employees *k)

{

if (k->position == "Бухгалтер") k->j.salary = standart * stavka_accountant;

if (k->position == "Секретарь") k->j.salary = standart * stavka_secretary;

if (k->position == "Сисадмин") k->j.salary = standart * stavka_administrator;

if (k->position == "Директор") k->j.salary = standart * stavka_director;

return;

}

Thank you.

derk

What if you use your friends?

class employee//сотрудник
{
protected:
    double salary = 0;
friend void zarplata(employee* k);

};
void zarplata(employee* k)

{

k->salary = 20;

}
int main() {

employee x;

zarplata(&x);

}

c++ 27608

2
Posts

0
Views

Suggested Topics

A

Mistake of 0xc0013a
Software Programming • c++ windows • • Anderson

2

0
Votes

2
Posts

0
Views

E

localtime Uses some kind of internal performance she's sending back. You don't have to and you can't remove it, so take it away. delete♪
M

javascript: protection against non-existent variables
Software Programming • javascript jquery objects qualifications • • magpie

2

0
Votes

2
Posts

0
Views

A

Specifically, your code is being translated into this.jQuery(function($) { $('.class1').on('click', 'div', function(e) { console.log($(this).text()); if (!$(this).parent().hasClass('class2')) return; // тут остальной код }); });<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="class1 class2"> <div>Div1</div> <div>Div2</div> <div>Div3</div> </div>A little decoding. In jQuery, the element of which the event occurred shall be transmitted to the processor as this♪ It's cross-sbrauser, unlike e.target And he can't.$(this).parent() returns jQuery to the parent of this element. If there's no parent, it's empty, but there's a set..hasClass('class2') Determines whether one element has one element in the classroom. class2♪ Accordingly, if the set is empty, the answer is falseOr you can't even check. Trace the processor to the necessary componentsjQuery(function($) { $('.class1').on('click', '.class2 > *', function(e) { // Цепляем обработчик на всех непосредственных потомков // элемента с классом class2 console.log($(this).text()); }); $('button').click(function() { $('.class1').append('<div class="class2"><div>Div0_1</div><div>Div0_2</div><div>Div0_3</div></div>'); }) });<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="class1"> <div class="class2"> <div>Div2_1</div> <div>Div2_2</div> <div>Div2_3</div> </div> <div class="class3"> <div>Div3_1</div> <div>Div3_2</div> <div>Div3_3</div> </div> </div> <button>Add</button>
K

What's the mistake of entry or withdrawal?
Software Programming • c++ multiplicity • • kalena

2

0
Votes

2
Posts

0
Views

E

Why do you put the line in a lot of ways first, and then you turn it in? Clearly, the first line is empty and the last one is lost. ♪ ♪So, neither entry nor withdrawal, processing :I would do that:#include <string> #include <set> #include <iostream> using namespace std; void show(const set<string>& M) { cout << "\n \t Матрица А:\n "; for(set<string>::iterator ss = M.begin(); ss != M.end(); ++ss) cout<<*ss<<endl; } int main() { // system("chcp 1251>nul"); set<string> A; for(int i = 1; i <= 11; ++i) { string fam; cout<<"\n\tВаша фамилия " << i << " - "; cin>>fam; A.insert(fam); } show(A); system("pause"); return 0; } But consider that set not allowed for the same valuesso if you have the same names, there's only one out of them.
Translation of steep in the field
Software Programming • c++ algorithm precursor • • Bogopo

2

0
Votes

2
Posts

0
Views

S

if (i == 0) if (arr[1] == 1) arr[i] = 0; else if (i == size - 1) { Put your bags down.if (i == 0) { if (arr[1] == 1) arr[i] = 0; } else if (i == size - 1) { PS: There's a sweet.
A

How to assign a constant variable after condition
Software Programming • c++ • • Amritpal

2

0
Votes

2
Posts

0
Views

A

For the complex initialization of the constant, this is the way through the lambdu that is immediately called the IIFE.void func(int value) { const int a = [value]() { if(value == 1) { return 10; } if(value == 2) { return 20; } return 100; }(); } This syntax allows virtually any calculation.
R

Generate random values without repeating in a game of dice c+
Software Programming • c++ • • Raziyah00

2

0
Votes

2
Posts

0
Views

Y

You don't have to pass the size total but only the size current: how many numbers you've been in.Apart from that, you should have initialized containerR; there might be a bad luck that any of the uninitialized values matched an existing value.The exit variable is not necessary at all. And the recorded variable must be initialized to false in each iteration, since otherwise, if the for does not update it, it remains permanently registered and does not end.#include <iostream> #include <stdlib.h> #include <time.h> using namespace std; void definirRango(int &, int &); void numAleatorio(int , int , int &, int [], int &); void inicializarContenedorRepetidos( int [], int & ); int aumentar = 0; int main(){ system("cls"); srand (time(NULL)); int in = 0,fin = 0, rango; cout<<"\n\n\t[DANDO RANGO DE NUMEROS]\n\n"; definirRango(in,fin); int tamanioTotal = fin-in; int tamanioActual = 0; int contenedorRepetidos[tamanioTotal]; inicializarContenedorRepetidos( contenedorRepetidos, tamanioTotal ); numAleatorio(in,fin,rango,contenedorRepetidos,tamanioActual); cout<<rango<<endl; numAleatorio(in,fin,rango,contenedorRepetidos,tamanioActual); cout<<rango<<endl; numAleatorio(in,fin,rango,contenedorRepetidos,tamanioActual); cout<<rango<<endl; numAleatorio(in,fin,rango,contenedorRepetidos,tamanioActual); cout<<rango<<endl; numAleatorio(in,fin,rango,contenedorRepetidos,tamanioActual); cout<<rango<<endl; return 0; } void inicializarContenedorRepetidos( int contenedorRepetidos[], int &tamanioTotal ) { for( int i = 0; i < tamanioTotal; i++ ) contenedorRepetidos[i] = 0; } void definirRango(int &lI, int &lS){ cout<<"Ingresa Inicio de Rango : "; cin>>lI; cout<<"Ingresa Final de Rango : "; cin>>lS; } void numAleatorio(int lI, int lS, int &rango, int contenedorR[], int &tamanioActual){ bool registrado; do{ rango = lI + rand() % (lS + 1 - lI); registrado = false; for(int i = 0; i < tamanioActual ; i++){ if(contenedorR[i] == rango){ registrado = true; break; } } if(!registrado){ contenedorR[tamanioActual++] = rango; } }while(registrado); }
B

Access the variable of an accordion of a child component to the father
Software Programming • angle • • baileigh

2

0
Votes

2
Posts

0
Views

R

It is possible using @Input and @Output. As in this example, https://angular.io/guide/inputs-outputs Child Component - TS:import { Output, EventEmitter } from '@angular/core'; export class ItemOutputComponent { @Output() newItemEvent = new EventEmitter<string>(); addNewItem(value: string) { this.newItemEvent.emit(value); } } Parent Component - TS:export class AppComponent { items = ['item1', 'item2', 'item3', 'item4']; addItem(newItem: string) { this.items.push(newItem); } } Parent Component - TEMPLATE:<app-item-output (newItemEvent)="addItem($event)"></app-item-output>
Writing in an array C++
Software Programming • c++ matrix • • Bogopo

2

0
Votes

2
Posts

0
Views

I was in doubt if you are using C or C++, why the question speaks C++ and the code is in C.I made an example of how to read a file using C++.Supposing your Emails file. txt is as follows:nome1 email1@email.com nome2 email2@email.com nome3 email3@email.com nome4 email4@email.com nome5 email5@email.com Main.cpp#include <iostream> #include <fstream> #include <string> #include <map> int main() { std::string filename = "Emails.txt"; // Abre o arquivo. std::ifstream infile(filename); std::map<std::string, std::string> lines; if(infile.is_open()){ std::string name, email; // Ler o arquivo linha por linha. while(infile >> name >> email) { lines[name] = email; } }else{ std::cerr << "Não foi possível abrir o seguinte arquivo: " << filename << std::endl; } // Fecha o arquivo. infile.close(); // Exibe a lista. for(auto const& line : lines) { std::cout << line.first << " " << line.second << std::endl; } return 0; }
Take value of a field by id and place in a variable
Software Programming • javascript c sharp asp.net mvc • • Demir

2

0
Votes

2
Posts

0
Views

K

You can try something like this:HTML:<form method="get"> <input type="text" id="inputId" /> <input type="submit" id="submitId" value="Enviar" /> </form> Javascript:// Função que mostra o valor do input num alert function mostrarValor() { alert(document.getElementById("inputId").value); } // Evento que é executado toda vez que uma tecla for pressionada no input document.getElementById("inputId").onkeypress = function(e) { if (e.keyCode == 13) { mostrarValor(); e.preventDefault(); } } // Evento que é executado ao clicar no botão de enviar document.getElementById("submitId").onclick = function(e) { mostrarValor(); e.preventDefault(); }
M

Access to Interface and Structure Fields in the Go Language
Software Programming • go • • meriah

2

0
Votes

2
Posts

0
Views

var john Human = Person{Name: "John"} as definedHuman Type Name You can use the field, so you can john.Name can not be obtained.Name to get arrows, for example https://tour.golang.org/methods/15 by using interface Person It is possible to handle as a mold:john.(Person).Name ( https://play.golang.org/p/ckmFwBbja5Y ).First Name If you know that access is essential,john Home Person defined as type Human It is natural to use interface function.var john Person = Person{Name: "John"} john.Greeting() fmt.Println("Hi, " + john.Name) ( https://play.golang.org/p/dNknOoQ2wCp )
N

Help me reassign the hex function so that at the end, the last remaining balance is not reset.
Software Programming • c++ hex • • Nykeriab

2

0
Votes

2
Posts

0
Views

J

I'd say goodbye:string hex(unsigned int n) { string res; while(n){ res = "0123456789abcdef"[n%16] + res; n /= 16; } return res; } int main() { cout << hex(933) << endl; cout << hex(15) << endl; cout << hex(84) << endl; } Here's a shorter version, with a lesson:void hex(unsigned int n) { if (n == 0) return; hex(n/16); cout << "0123456789abcdef"[n%16]; } int main() { hex(933); cout << endl; hex(15); cout << endl; hex(84); cout << endl; } Well, that's the simplest thing:int main() { cout << hex << 933 << endl; cout << hex << 15 << endl; cout << hex << 84 << endl; }
E

Optimize code to save order
Software Programming • c++ algoritmos ordenamiento • • emran

2

0
Votes

2
Posts

0
Views

How to optimize this code?Avoid unnecessary copiesvector<string> ScoreManager::orderList(vector<string> pList) Few things are as low as making 1-2 copies of a vector when the truth is that you don't need to perform any. And yes, I said two copies:vector<string> ScoreManager::orderList(vector<string> pList) // (1) (2) To know:The object you return independent of the past object as argument... 1 copy (depending on whether the optimization is applied copy elision this copy could be omitted)The argument passes by value... 1 copyThis function should work with one copy or, appropriately, with none:0-1 copy:vector<string> ScoreManager::orderList(vector<string> const& pList) 0 copies:// versiones previas a C++11 void ScoreManager::orderList(vector<string> & pList ) // C++11 en adelante (sintaxis move) vector<string> ScoreManager::orderList(vector<string> && pList) { // ... return pList; // equivalente a return std::move(pList); } The implementation of this function is another task that could be improved... for example by using STL:// C++11 en adelante vector<string> ScoreManager::orderList(vector<string> && pList){ std::sort(pList.begin(),pList.end(), [this](string const& s1, string const& s2) { return getOnlyInt(s1) < getOnlyInt(s2); }); return pList; } Avoid unnecessary member functionsint ScoreManager::getOnlyInt(string pRow) This function does not need to know the state of ScoreManagerThen it doesn't make sense to be a member function. Yours then could be to change it to static function. Motive? Accessing a member function requires an indirect through this, while access to static functions is immediate:class ScoreManager { private: static int getOnlyInt(string const& row); // ^^^^^^ Hay que evitar copias innecesarias }; Do not open two files if you can avoid itvoid ScoreManager::write_file(string pName, int pScore ){ // ... } This function basically does the following:Add at the end of "scores.txt" the last score.Close. said file (does not close until the end) and read it to generate a vector. Note that the comment already warns you of a dangerous use of files... you are opening it with two different streams at once (one reading and one writing)Order the array that has been readGenerates a new file with the ordered listReplace the old file with the new one.How about?You read the file "scores.txt".At the end of the list add the new scoreOrder the listYou overwrite the file.Something like that:void ScoreManager::write_file(string pName, int pScore ){ const string file_name = "scores.txt"; if (openFile(file_name, false)){ closeFile(); } vector<string> scores = getListScores(); scores.push_back(to_string(pScore) + " " + pName); orderList(scores); ofstream fl(file_name , ios::trunc); if (fl.is_open()){ std::for_each(scores.begin(),scores.end(), [&fl](string const& score) { fl << score << '\n'; }); fl.close(); //Cierro el archivo score } else { cout<<"Error al abrir el archivo"<<endl;; } } Use data structuresManage punctuations as a string you suddenly start extracting the numbers has its drawbacks:to work with scores must make continuous string to integer conversionsWhat if any nick Do you have numerical characters?The recommended would be to store the scores in a structured way:struct Score { int puntos; string nombre; }; This shifts complexity to interaction with files, as the rest of the operations will be much easier.No variable reusesIf you check your code, you'll see the variable. file_name has a somewhat bizarre use... Is that variable necessary to share information between functions? The answer is that no and its use only complicates the reading of the code. To the extent possible, we must avoid reusing variables. This practice helps to detect errors that would otherwise go unnoticed, such as uninitiated variables:// ejemplo a evitar int i=0,j; for( i=0; i<10; i++) std::cout << i; for( j=0; i<10; j++) std::cout << j; // Por que este bucle no aparece? // ejemplo a seguir for( int i=0; i<10; i++) std::cout << i; for( int j=0; i<10; j++ ) // Ahora el compilador nos avisa del problema std::cout << j; Do not declare a variable until it is not necessaryC++ is not a language based on old C standards, but is a language of its own with its own features, advantages and drawbacks. Among its advantages is that the variables can be declared at almost any point of the code.The ideal thing, in line with what is treated at the previous point, is that the variables have a minimum life essential to fulfill their function and in order to do this it is necessary to avoid declaring them all in cascade at the beginning of the function. Declaring variables with a minimal scope helps to detect unused variables (and variables with too many uses) and this allows you to keep the code cleaner and more organized.
J

Access to protected class attributes
Software Programming • python python 3.x op code inspection • • juvenalb

2

0
Votes

2
Posts

0
Views

A

I believe that a solution with a characteristic that returns the artifacts is not very good, which is why:If a new attribute is added, you'll have to rule in all places where it's used.It's not obvious how the attributes will be returned, it can be confusedYou can't define the type of values inside the box, IDE won't warn you if you're trying to do something with the meanings.Options for action:Make separate property for each parameter. Minus, you're gonna have to hand-write these property.Make a container for a set of parameters, e.g. object or namedtuple, from which to receive names, example:from abc import ABC, abstractmethod from collections import namedtuple ConnectionParameters = namedtuple("ConnectionParameters", "ip,port,timeout") class SCConnection(ABC): slots = ( '__connection_parameters' '__connection', ) def __init__(self, ip: str, port: int, timeout: int): self.__connection_parameters = ConnectionParameters(ip, port, timeout) self.__connection = None @property def connection_parameters(self) -> ConnectionParameters: return self.__connection_parameters @abstractmethod def open_connection(self): raise NotImplementedError @property def connection(self): return self.__connection @connection.setter def connection(self, connection_object): if self.__connection is None: # Тут лучше бы бросать исключение, а не молча игнорировать попытку перезаписи self.__connection = connection_object class FirstSystem(SCConnection): def init(ip: str, port: int, timeout: int): super().init( ip=ip, port=port, timeout=timeout ) def open_connection(self): params = self.connection_parameters telnet_client = Telnet(params.ip, params.port, params.timeout) self.connection = telnet_client class SecondSystem(SCConnection): def init(self, ip: str, timeout: int, port: int = 31114): super().init( ip=ip, port=port, timeout=timeout ) def open_connection(self): params = self.connection_parameters ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2) ssl_context.load_verify_locations(cafile=certifi.where()) _socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0) connection = ssl_context.wrap_socket(_socket) connection.connect((params.ip, params.port)) connection.settimeout(params.timeout) self.connection = connection For namedtuple, of course, the types of field values are not declared, so if it's critical, then we need to be converted to an object with unmodified fields, but the rest will remain unchanged.
T

How to access a multi array field with php
Software Programming • php json array curl • • Trenton

2

0
Votes

2
Posts

0
Views

That's because the example you put is a JSON object not an arrangement, to access you can do the following:$data = '{TuJson}'; $r = json_decode($data); var_dump($r->bpi->USD->code); var_dump($r->bpi->USD->rate);
D

Accessing variables from a struct
Software Programming • c language struc languaget ponteiro • • derk

2

0
Votes

2
Posts

0
Views

You essentially understood everything.The first is taking the value that is in the address depois and then taking the field hora (in the question the name of the field is wrong). The parentheses are right there to indicate that first comes the deference that will produce an object of the type struct horario which in turn has a field hora.The second, by precedence of operators, is taking the pointer depois and trying to access the field hora in it, it turns out that a pointer has no fields, it is an address and nothing else, then it already makes a mistake. He'll even try to use the deference operator on something that doesn't make sense. It's like...*(depois.agora) = 20; https://github.com/maniero/SOpt/blob/master/C/Pointer/Deref.c .You can only access an object in a manner compatible with its content.

Erroneous access to protected variable fields

Suggested Topics

Mistake of 0xc0013a Software Programming • c++ windows • • Anderson

javascript: protection against non-existent variables Software Programming • javascript jquery objects qualifications • • magpie

What's the mistake of entry or withdrawal? Software Programming • c++ multiplicity • • kalena

Translation of steep in the field Software Programming • c++ algorithm precursor • • Bogopo

How to assign a constant variable after condition Software Programming • c++ • • Amritpal

Generate random values without repeating in a game of dice c+ Software Programming • c++ • • Raziyah00

Access the variable of an accordion of a child component to the father Software Programming • angle • • baileigh

Writing in an array C++ Software Programming • c++ matrix • • Bogopo

Take value of a field by id and place in a variable Software Programming • javascript c sharp asp.net mvc • • Demir

Access to Interface and Structure Fields in the Go Language Software Programming • go • • meriah

Help me reassign the hex function so that at the end, the last remaining balance is not reset. Software Programming • c++ hex • • Nykeriab

Optimize code to save order Software Programming • c++ algoritmos ordenamiento • • emran

Access to protected class attributes Software Programming • python python 3.x op code inspection • • juvenalb

How to access a multi array field with php Software Programming • php json array curl • • Trenton

Accessing variables from a struct Software Programming • c language struc languaget ponteiro • • derk

Mistake of 0xc0013a
Software Programming • c++ windows • • Anderson

javascript: protection against non-existent variables
Software Programming • javascript jquery objects qualifications • • magpie

What's the mistake of entry or withdrawal?
Software Programming • c++ multiplicity • • kalena

Translation of steep in the field
Software Programming • c++ algorithm precursor • • Bogopo

How to assign a constant variable after condition
Software Programming • c++ • • Amritpal

Generate random values without repeating in a game of dice c+
Software Programming • c++ • • Raziyah00

Access the variable of an accordion of a child component to the father
Software Programming • angle • • baileigh

Writing in an array C++
Software Programming • c++ matrix • • Bogopo

Take value of a field by id and place in a variable
Software Programming • javascript c sharp asp.net mvc • • Demir

Access to Interface and Structure Fields in the Go Language
Software Programming • go • • meriah

Help me reassign the hex function so that at the end, the last remaining balance is not reset.
Software Programming • c++ hex • • Nykeriab

Optimize code to save order
Software Programming • c++ algoritmos ordenamiento • • emran

Access to protected class attributes
Software Programming • python python 3.x op code inspection • • juvenalb

How to access a multi array field with php
Software Programming • php json array curl • • Trenton

Accessing variables from a struct
Software Programming • c language struc languaget ponteiro • • derk