function overloading
- 2. One of the more powerful features for code readability is that of overloading. Function overloading is the availability of various functions within a class that differ from each other in function signature i.e. various functions share same name with different parameter types or number of parameters.
- 3. Define multiple functions with the same name differing in the number of arguments passed.
- 4. We use function overloading/method overloading for the purpose of: 1. Compile time binding 2. Better Consistency 3. Better Readability
- 5. In this type of overloading we define two or more functions with same two or more function with same name and same number of parameters, but the type of parameter is different. For example in this program,we have two sum() function, first one gets two integer arguments and second one gets two double arguments.
- 6. int sum(int x, int y) { cout<<x+y; } double sum(double x, double y) { cout<<x+y; } int main() { sum(10,20); sum(10.5,20.5); }
- 7. Overloaded functions are distinguished by their signatures. A signature is a combination of function’s name and its parameter types. The compiler uses only parameter list to distinguish between functions of same name.
- 8. 1) Each overloaded function must differ either by the number of its formal parameters or their data types. 2) The return type of overloaded functions may not be the same data type. 3) The default arguments of overloaded functions are not considered by the c++ compiler as part of the parameter list. 4) Do not use the same function name for two unrelated functions improper declarations leading to conflict in a function call statement.
- 9. void fun (char a, int times) { for (int i=1; i<=times; i++) cout<<a; } Void fun (char a=“*” ,int times) { for(int i=1; i<=times; i++) cout<<3; } Void fun (int times) { for(int i=1;i<=times; i++) cout<<“@”; } Void main() { fun(‘+’ , 60); fun(60); }
- 10. THANK YOU…!!!