CPP

Types of Variables

int x=6; //Ordinary Variable

int *p;  //Pointer Variable
p = &x;

int &y=x; //Reference Variable
y++;
cout << x; //7

Reference Varible

• Reference means address.
• Reference variable is an internal Pointer.
• Declaration of Reference varible is preceded with ‘&’ symbol (but do not red it as ‘address of’).
• Reference variable must be initialized during declaration
• It can be initialized with already declared variables only.
• Reference variable cannot be updated.