pointer in c++
// Variable is used to store value
int a = 5;
cout << a; //output is 5
// Pointer is used to store address of variable
int a = 5;
int *ab;
ab = &a; //& is used get address of the variable
cout << ab; // Output is address of variable
pointer in c++
// Variable is used to store value
int a = 5;
cout << a; //output is 5
// Pointer is used to store address of variable
int a = 5;
int *ab;
ab = &a; //& is used get address of the variable
cout << ab; // Output is address of variable
what is this pointer in c++
Every object in C++ has access to its own address through an important pointer called this pointer.
The this pointer is an implicit parameter to all member functions.
Therefore, inside a member function,
this may be used to refer to the invoking object.
Friend functions do not have a this pointer,
because friends are not members of a class.
Only member functions have a this pointer.
pointer in cpp details
#include <iostream>
using namespace std;
class Demo {
private:
int num;
char ch;
public:
void setMyValues(int num, char ch){
this->num =num;
this->ch=ch;
}
void displayMyValues(){
cout<<num<<endl;
cout<<ch;
}
};
int main(){
Demo obj;
obj.setMyValues(100, 'A');
obj.displayMyValues();
return 0;
}
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