Overloading :

• Same function name with different parameters/signatures.

• It is compile time polymorphism.

• It occurs in a same class methods.

• It is a static/compile time binding.

For e.g:

int sample() 
{
     cout<<"no arguments function";
 }

int sample(int a)
{
     cout<<"one arguments function";
 }
int sample(double a)
{
     cout<<"arguments type changed";
 }
int sample(int a, double b){
{
     cout<<"two arguments function";
 }

Overriding :

• Same function name with same parameters/signatures.

• It is runtime time polymorphism.

• It occurs between super and sub class methods.

• It is a dynamic/ run time binding.

For e.g:

class Base
{
 public:
 void show()
 {
  cout << "Base class";
 }
};
class Derived:public Base
{
 public:
 void show()
 {
  cout << "Derived Class";
 }
}