Methods
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Published Oct 12, 2021Updated Mar 20, 2024
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C++ class methods are user-defined functions that can be used within an instance of the class. A dot notation .
is used before method names to distinguish them from regular functions.
Class Methods
A class method can be defined in two ways:
- Inside the class definition
- Outside the class definition
Inside the Class
class Person {string name;public:// Defines the methodstring get_name() {return name;}};int main() {Person robert;// Calls the methodrobert.get_name();return 0;}
Outside the Class
class Person {string name;public:void get_name();};// Defines the methodvoid Person::get_name() {cout << name << endl;}int main() {Person robert;// Calls the methodrobert.get_name();return 0;}
Parameters can also be added to class methods:
class Person {string name;public:// Defines the methodvoid set_name(string newName) {name = newName;}string get_name() {return name;}};int main() {Person robert;// Sets the name class memberrobert.set_name("Robert");// Prints "Robert"std::cout << robert.get_name();return 0;}
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