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C++ Basics Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM C++ INTERVIEW QUESTIONS C++ BASICS INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

C++ Basics Interview Questions & Answers - Learning Mode

C++ is a general-purpose programming language. C++ is regarded as a middle-level language, as it comprises a combination of both high-level and low-level language features.

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C++ Basics Interview Questions & Answers - Learning Mode
Try C++ Basics Interview Questions & Answers - Exam Mode
Question: What is the difference between an object and a class?

Answer: Classes and objects are separate but related concepts. Every object belongs to a class and every<br>class contains one or more related objects.<br><br>?A Class is static. All of the attributes of a class are fixed before, during, and after the execution of<br>a program. The attributes of a class don't change.<br><br>?The class to which an object belongs is also (usually) static. If a particular object belongs to a<br>certain class at the time that Source: CoolInterview.com
Question: What is prototype in c++ and c?

Answer: Prototype is a model that can explain the structure of the functions we are going to use in our C and C++ programs.Suppose we are going to use one function called add with two parameters to add means the prototype of the function is int add(int a,int b), simply prototype in C and C++ is the function declaration. Source: CoolInterview.com
Question: What is the return value for getch()?

Answer: getch() function is specified in Conio.h header file, and gets a character from the keyboard.<br>Its prototype is:<br> int getch(void);<br><br>It obtains a character from stdin. Input is unbuffered, and this routine will return as soon as a character is available without waiting for a carriage return. The character is not echoed to stdout. Source: CoolInterview.com
Question: What is Difference between c and c++?

Answer: C is a structured programming language where as C++ is an object oriented language. C++ is also called as C with Classes. Source: CoolInterview.com
Question: What is encapsulation?




Answer: Encapsulation means wrapping up of Data and Code...this is what i got from data structures book...
Source: CoolInterview.com
Question: In c++ have a default constructor ?




Answer: Yes C++ does have a default constructor provided by the compiler.In this case all the members of the class are initialized to null values.These values act as the default values.For eg: MyClass me;In the above case since the object is not initialized to any value so the default constructor will be called which will initialize the class with the default values. Source: CoolInterview.com
Question: What is class?
What is object?
Describe these 2 with example.


Answer: Group of objects is called a class.<br>Instance of class is called a object. Source: CoolInterview.com
Question: what are the differences between member function and constructor?

Answer: Member functions can be invoked only after the creation of objects where as constructors are automatically invoked while creating an object. Constructors used to construct an object i.e, initializing variables in an object during its creation. Source: CoolInterview.com
Question: Difference between "C structure" and "C++ structure".




Answer: They are different. C struct can only contain data while C++ struct can contain functions and access limitation such as public, private etc just as a class (not totally the same as class!) Source: CoolInterview.com
Question: What is an object?

Answer: Object is a software bundle of variables and related methods. Objects have state and behavior. Source: CoolInterview.com
Question: What is the difference between class and structure?

Answer: Structure: Initially (in C) a structure was used to bundle different type of data types together to<br>perform a particular functionality. But C++ extended the structure to contain functions also. The<br>major difference is that all declarations inside a structure are by default public.<br><br>Class: Class is a successor of Structure. By default all the members inside the class are private. Source: CoolInterview.com
Question: Which type of questions are asked in interviews?


Answer: what type of question you will get from this site study these question + answer you will get the job very soon Source: CoolInterview.com
Question: Define parameter by value?

Answer: Pass by value is the default mechanism for passing parameters to a method. The simplest definition of a value parameter is a data type name followed by a variable name. When a method is called, a new storage location is created for each value parameter. The values of the corresponding expressions are copied into them. The expression supplied for each value parameter must be similar to the declaration of the value parameter. Source: CoolInterview.com
Question: I am a new computer engineering student can you please explain what is c++ and its uses please answer me this question as faster as you can?

Answer: Well, C++ is an object oriented language in which we make programs using classes and objects and use C++ advantages like inheritance,polymorphisms,dynamic binding etc.. Syntactically, it is similar to C. Well, C and C++ programming is widely adopted in industry and thus every engineering student has the language in his/her curriculum. Source: CoolInterview.com
Question: What are inner class and anonymous class?

Answer: Inner class : classes defined in other classes, including those defined in methods are called inner classes. An inner class can have any accessibility including private. Anonymous class : Anonymous class is a class defined inside a method without a name and is instantiated and declared in the same place and cannot have explicit constructors. Source: CoolInterview.com
Question: What are the different types of Storage classes?



Answer: There are four types of storage class: automatic, register, external, and static Source: CoolInterview.com
Question: Write a short code using C++ to print out all odd number from 1 to 100 using a for loop


Answer: for( unsigned int i = 1; i < = 100; i++ )<br>if( i & 0x00000001 )<br>cout << i << ","; Source: CoolInterview.com
Question: Explain about member functions?

Answer: A function is a set of statements that perform a specific task in response to a message. The functions of a class are called member functions in Csharp. Member functions are declared inside the class. The function declaration introduces the function in the class and the function definition contains the function code. Source: CoolInterview.com
Question: What is meant by software development method?

Answer: Software development method describes how to model and build software systems in a reliable and reproducible way. To put it simple, methods that are used to represent ones? thinking using graphical notations. Source: CoolInterview.com
Question: Explain term POLIMORPHISM and give an example using eg. SHAPE object: If I have a base class SHAPE, how would I define DRAW methods for two objects CIRCLE and SQUARE


Answer: class SHAPE{
public virtual Draw() = 0; //abstract class with a pure virtual method
};

class CIRCLE{
public int r;
public virtual Draw() { this->drawCircle(0,0,r); }
};

class SQURE
public int a;
public virtual Draw() { this->drawRectangular(0,0,a,a); }
};

Each object is driven down from SHAPE implementing Draw() function in its own way. Source: CoolInterview.com

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Latest 20 Questions
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