What does this pointer point to in c++

This pointer points to the instance of the current object in C. Usage includes: accessing member variables: this-> member variable name calling member function: this-> member function name () passing object reference: passed as a parameter to other functions to reference the current object

What does this pointer point to in C

In C, this pointer is a special pointer that always points to An instance of the current object. That is, the this pointer points to the object that calls a member function or accesses a member variable.

Usage

this Pointers are used in the following scenarios:

• Access member variables: You can use this->member variable name to access the member variables of the current object.
• Call member function: You can use this->member function name() to call the member function of the current object.
• Passing object reference: You can pass the this pointer as a parameter to other functions to reference the current object.

Example

The following example illustrates the use of this pointers:

class Person {
public:
    string name;

    void printName() {
        cout << "Name: " << this->name << endl;
    }
};

int main() {
    Person bob;
    bob.name = "Bob";
    bob.printName(); // 输出："Name: Bob"
}

In this example, printName() The function uses the this pointer to access the name member variable and prints it.

Note

• Only non-static member functions and constructors have this pointers.
• Static member functions and constructors cannot access the this pointer because they do not belong to any specific object.
• this The pointer always points to the object of the currently executing function.

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