What is return? When and why do we need to use this?

Answer 1

return is used to return somthing back to the method you called it from

Answer 2

A function with a return statement returns some sort of value that can be used by the thing calling the function, in statically typed languages (C++, Java, C# ect) you need to specify what type that will be normally near the function name, example in C++

include <iostream>
using namespace std;

int add(int num) { //int at the start tells us the function will return an int
return num + 2; // anything that uses this function variable, another function ect will receive the result of num + 2
}

int main() {
cout << add(3) << "\n"; // add gives the result of num (3) + 2 to cout which then prints it out
return 0;
}

Answer 3

to return something or to quit