Object Oriented Programming · Unit 7
Operator Overloading and Type Conversion
Exam-focused notes for Operator Overloading and Type Conversion (Object Oriented Programming, BIT153): what the TU syllabus asks and how it has actually been tested, with 9 solved past questions from this unit.
What this unit covers
- Operator overloading definition and purposes
- Overloading arithmetic operators
- Overloading comparison operators
- Overloading unary operators: pre-increment and post-increment
- Type conversion: basic to user-defined
- Type conversion: user-defined to basic
- Conversion between objects of different classes
Operator overloading definition and purposes
Explain operator overloading with example?Write a C++ class Number to store an integer. Overload addition (+) and comparison (==) operators, and show conversion between int and Number. Write a program to perform these operations.[2+8]
(a) Explanation of Operator Overloading Operator overloading is a feature of C++ that allows existing operators (such as +, -, ==, <<, etc.) to be given additional meaning when applied to user-defined types (classes/objects). It enables objects of a class t...
Full solved answer →What are the purposes of operator overloading? Address the problem in multiple inheritance. [5]
--- Operator overloading allows existing C++ operators to be given additional meanings when applied to user-defined data types (classes). The main purposes are: 1. Readability and Natural Syntax Allows objects to be used with operators in a natural, intuiti...
Full solved answer →What is operator overloading? Write a complete C++ program to overload + operator to add two objects of class 'Time'.[10]
Operator overloading is a feature of C++ that allows the programmer to redefine or extend the meaning of existing operators (such as +, -, , ==, etc.) for user-defined data types (classes and structures). It enables objects of a class to be used with standa...
Full solved answer →What is operator overloading? Explain with an example. [5]
Operator overloading is a compile-time polymorphism feature in C++ that allows existing operators (such as +, -, , ==, etc.) to be given additional meaning or redefined for user-defined data types (classes/structures), while keeping their original functiona...
Full solved answer →Overloading unary operators
Write a program to create a class named STUDENT with data member age, then overload the unary operator (++) to increment the age of any object of above class. [5]
Unary operator overloading allows operators like ++, --, - etc. to work with user-defined class objects. The operator function is defined inside the class using the keyword operator followed by the operator symbol. --- --- --- Step Description -------------...
Full solved answer →Type conversion
How do you convert basic data type to user defined data type? Explain. [5]
In C++, converting a basic (built-in) data type (such as int, float, double, char) to a user-defined data type (such as a class or struct) is achieved using a special constructor called a conversion constructor. --- A conversion constructor is a single-argu...
Full solved answer →Lost out various type conversion techniques? Explain basic to user-defined type conversion with example. [5]
Type conversion refers to the process of converting a value from one data type to another. C++ supports several type conversion techniques. --- - Done automatically by the compiler. - Converts lower data type to higher data type (no data loss). --- - Done m...
Full solved answer →Write a program to convert floating point value to object of distance class with data members feet and inch. [5]
This problem uses a conversion constructor (or single-argument constructor) to convert a floating point value (representing total inches) into a Distance object with feet and inches data members. Note: Reference notes were not available for this topic; the ...
Full solved answer →Conversion between objects of different classes
Why data conversion is needed?How Conversion between objects of different classes is carried out.Write a program containing classes Kilogram and Gram to convert Gram to Kilogram. (1 Kilogram = 1000 grams)[2+4+4]
Data conversion (type conversion) is needed in programming for the following reasons: - Compatibility between different types: When we perform operations between variables of different data types (e.g., int and float), conversion is necessary to make them c...
Full solved answer →Make Unit 7 stick
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