Pointer Definition :

C language Pointer Definition, Declaration or Expressions - The variable that stores the address of another variable is what in C++ in called pointer. Pointer are a very powerful feature of the language that has many uses in lower level programming.

Benefits of using Pointers in C++ :

• Pointers save the memory.
• Pointers reduce the length and complexity of program.
• Pointers allows passing of arrays and strings to functions more efficiently.
• Pointers makes possible to return more than one value from the function.
• Pointers increase the processing speed.

Example :

/* Description: print 'a' address values step by step */ #include<iostream> using namespace std; int main() { int n=10, *ptr; ptr = &n; cout << "Address of n variable: " << &n << endl; cout << "Address stored in pntr variable: " << ptr << endl; cout << "Value of *pntr variable: " << *ptr << endl; }

Output :