What is function overloading?

Answer 1

Function overloading (also method overloading) is a programming concept that allows programmers to define two or more functions with the same name and in the same scope. Each function has a unique signature (or header), which is derived from:function/procedure name. number of arguments. arguments' type.
ex:-here sum function is overloaded
int sum (int x, int y) {
cout << x+y; }
int sum(int x, int y, int z) { cout << x+y+z; }

Here sum() function is overloaded, to have two and three arguments. Which sum() function will be called, depends on the number of arguments.

int main() {
sum (10,20); // sum() with 2 parameter will be called
sum(10,20,30); //sum() with 3 parameter will be called
}

Answer 2

thanks