operator overloading in c++ - Wikitechy https://www.wikitechy.com/interview-questions/tag/operator-overloading-in-c/ Interview Questions Fri, 19 Aug 2022 08:06:07 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png operator overloading in c++ - Wikitechy https://www.wikitechy.com/interview-questions/tag/operator-overloading-in-c/ 32 32 What is Overloading ? https://www.wikitechy.com/interview-questions/cpp/what-is-overloading/ https://www.wikitechy.com/interview-questions/cpp/what-is-overloading/#respond Fri, 19 Aug 2022 08:06:07 +0000 https://www.wikitechy.com/interview-questions/?p=4794
  • If a single object behaves in many ways, it is known as overloading.
  • It provides different versions of the same function while a single object has the same name.
  • C++ facilitates you to specify more than one definition for an operator or a function in the same scope.
  • Overloading consists of two types, they are:
    • Operator Overloading
    • Function Overloading

    • Operator Overloading

    • Operator overloading is otherwise known as compile-time polymorphism in which a standard operator is overloaded to provide a user-defined definition to it.
    • ‘+’ operator is overloaded to perform the addition operation on data types such as float, int, etc.
    • In following functions operator overloading can be implemented such as Member function, Non-Member function, Friend Function.

    Sample Code

    using namespace std;    
    class Test    
    {    
       private:    
          int num;    
       public:    
           Test(): num(8){}    
           void operator ++()         {     
              num = num+2;     
           }    
           void Print() {     
               cout<<"The Count is: "<<num;     
           }    
    };    
    int main()    
    {    
        Test tt;    
        ++tt;  // calling of a function "void operator ++()"    
        tt.Print();    
        return 0;    
    }

    Output

    Function Overloading

    • Function overloading is a type of compile-time polymorphism which can define a family of functions with the same name.
    • The function would perform different operations based on the argument list in the function call.
    • In argument list function to be invoked depends on the number of arguments and the type of the arguments.

    Sample Code

    using namespace std;    
    class Cal {    
        public:    
    static int add(int a,int b){      
            return a + b;      
        }      
    static int add(int a, int b, int c)      
        {      
            return a + b + c;      
        }      
    };     
    int main(void) {    
        Cal C;                                                    //     class object declaration.   
        cout<<C.add(10, 20)<<endl;      
        cout<<C.add(12, 20, 23);     
       return 0;    
    }

    Output

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