The C++ language provides imperative, object-oriented and generic programming features, while also providing facilities for low-level memory manipulation. Having a basic familiarity with the programming language used on the job is a prerequisite for quickly getting up to speed.
Object-oriented programming is a paradigm based on encapsulating logic and data into objects, which may then contain fields and procedures. Many of the most widely used programming languages are based on OOP, making it a very important concept in modern programming.
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
User interface contains two types of user input controls: TextInput, which accepts all characters and NumericInput, which accepts only digits.
Implement the following methods:
- add on class TextInput - adds the given character to the current value
- getValue on class TextInput - returns the current value
- add on class NumericInput - overrides the base class method so that each non-numeric character is ignored
For example, the following code should output "10":
TextInput* input = new NumericInput(); input->add('1'); input->add('a'); input->add('0'); std::cout << input->getValue();
- Example case: Exception
- Adding various characters to TextInput: Exception
- Adding various characters to NumericInput: Exception