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Computer Science Applying string library Implementation of key OOP
Activity 4.9:
features in C++
Classes in C++
function in C++ program
FOR ONLINE READING ONLY
Write a C++ program to show
constructing objects. They serve as a blueprint
application of string library In C++, classes serve as blueprints for
by bundling together data and methods that
functions. In your program manipulate that data. Essentially, a class defines
include the following functions: a specific type and outlines the structure and
(a) strlen( ) behavior of objects that belong to that type.
(b)strcopy( ) Visualise it as a template that specifies the
(c) strcat( ) characteristics and capabilities an object will
(d) strcmp( ) possess.
(e) strchr( ) To illustrate, consider a real-life example: a
(f) strstr( ). car represents an object. This car possesses
attributes like weight and color, as well as
methods such as drive and brake. Attributes
Exercise 4.16 and methods can be compared to variables and
functions that are associated with a class. They
1. Differentiate between are commonly known as “class members”.
string and array.
2. Why do we use the null A class, as a custom data type can be utilised in
character ‘/0’ in string a program. It acts as a constructor for objects
initialisation? or a “blueprint” that outlines how to create
3. Write a program that objects. The syntax for class in C++ is like this:
displays the statement class ClassName {
“C++ programming public:
language”. // public members
4. Can we declare an array to private:
hold the mixture of both // private members
and doubles and ints?
Explain. protected:
5. Explain what will happen // protected members
if you attempt to access an }; E
element of an array using a
negative index? Program Example 4.40 shows a sample code
for structure of a class
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for Advanced Secondary Schools
Computer Science Form 5.indd 292 23/07/2024 12:34
