This seems like a fundamental that I’ve completely forgotten from comp sci 20 years ago. How would I link/trigger an object function from another object. Or what is the name of the concept I’m trying to find? (c++ if it matters) My example is I have a sensor which has accumulators. The accumulators have an ..
Category : oop
This does not compile: struct Base { void something( int a ) { } }; struct Derived : public Base { static void something() { std::unique_ptr<Derived> pointer = std::make_unique<Derived>(); pointer->something( 11 ); } }; It’s possible to fix with using Base::something but still, is it possible to make inheritance work as advertised even inside methods? ..
I was just brushing up my oops concepts, I got this problem, it was easy to predict printed string is "Char" #include <iostream> using namespace std; class constructor { int x; public: constructor(short ss) { cout << "Short" << endl; } constructor(int xx) { cout << "Int" << endl; } constructor(char cc) { cout << ..
Write a program that calculates and displays the weekly salary for an employee who earns $25 an hour, works 40 regular hours, 13 overtime hours, and earns time and one-half (wage * 1.5) for overtime hours worked. Create a separate method to do the calculation and return the result to be displayed. Your program contain ..
I have a non-void function which returns a value to be used as an input of a class constructor, but there is a possibility for that value not to be available, so I want to return the value in case of success or just terminate (std::terminate()) the application in case of failure before the function ..
I have following classes: class ATemperatureDevice{}; class AHumidityDevice{}; class BluetoothLeDevice{}; class Sensor1 : BluetoothLeDevice, ATemperatureDevice, AHumidityDevice {}; class Sensor2 : BluetoothLeDevice, AHumidityDevice {}; I have a vector<BluetoothLeDevice>, where all devices are stored. The Classes ATemperatureDevice, AHumidityDevice and BluetoothLeDevice have virtual functions. When I pick one, I have a BluetoothLeDevice. Now I want to check if ..
I want to draw a conclusion for the fan as in C# System.out.printIn("Hello"); // System is the name of the class Source: Windows Que..
#include <iostream> using namespace std; class Singleton { public: int val; static int count; Singleton() { if (count == 1) throw 0; Singleton::count++; val = 100; } }; int Singleton::count = 0; int main () { try { Singleton a, b; } catch (…) { cout << "errorn"; } return 0; } So we count ..
For example there are classes A and B. A uses B’s methods and vice versa. So what is usually done passing pointer to other class in constructor. But what if they use each other – how should I pass B to A if B not yet constructed? Ok, I wrote setter for A and call ..
I have a header create.h file with the Hero class, there is also a function createHero()(in main.cpp) that creates an object of the Hero class, this function is called when the condition is met, at this point the created object from the createHero() function is returned, however this object is local and I cannot access ..
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