What is function overloading?

Answer 1

https://msdn.microsoft.com/en-us/library/5dhe1hce.aspx

Answer 2

In any programming language, there is a need to write different functions with same name but accept different types and number of parameters.

A simple example could be abs() function which return the absolute value of the given parameter regardless of the type (int, float, double)

abs(-123)
abs(42.6)

So you write two functions like the following

int abs(int x) {
return (x < 0)? -x: x;
}

float abs(float x) {
return (x < 0)? -x: x;
}

so the abs function here is said to have been overloaded.

There are better ways to write the above two functions, I have given them only for illustration purposes.

Answer 3

https://www.sololearn.com/learn/CPlusPlus/1640/?ref=app