Can u explain me what are functions? In simple words.

Answer 1

Good day.

I can explain it to you in two ways (how I came to it):
1. Real life;
2. Coding.

1. In real life a "function" is what some object can do, I mean capable of doing.
A car can horn (horn(), lol), an umbrella can protect you from rain (protect()), a dog can bark (woof()), a cat can meow (meow(), sometimes at night, that annoys you, right? ^^).

2. In coding it's all the same.
Imagine you created an object and gave this object an ability to summarize two integers: a and b.
So the function will be sum of a and b, sum = a+b.
And then return it.
So you actually created an object with a sum function and you may use it for future objects.

Hope it helps.

Answer 2

A (named) piece of code that gets executed when called.

Answer 3

A function is a block of codes written for a specific task.
example: int main( )
notice this '( )', it usually signifies a function, like scanf( ), printf( ), these are functions.

Answer 4

A magic box that takes input and produces output..... As a user you need not worry how its implemented. You just need to make complete use of it.

Answer 5

set of instructions

Answer 6

In very simple terms, you can think of a function as a machine. You provide some input to the machine, then it acts on the input, and finally gives you the output. For example the juicer machine. You insert oranges, it then acts on the input( Orange ), and gives you output(juice).

input orange;
output = juice(orange)

Programming is very easy of you visualize it!

Answer 7

yes it helped me . thanks

Answer 8

give input, get output

Answer 9

function is nothing but a small pieces of code..(set of instructions)Which when needed can we use several times..!!..

Answer 10

A function is a block of code (instructions)
that work together to perform a specific
task.
Functions allow the the programmer
to define a task only once and give
separate parts of the program access
to it.
This software reusability helps avoid writing
and repeating code over and over again.
Plus it reduces the size of the program by
writing a function(block of code) once , instead of writing
the same code over and over again.
This saves time and money.

Answer 11

Function is a set of instructions.
It is used to perform specific operation.
There are two types of functions,
i) Predefined function, (The function that is present already)
eg: cout (its operation is to display output)
ii) User-defined function. (The function that we define)
eg: add() (a simple function to add two numbers)

Answer 12

function is a set of code that you use often in your code

For ex. you have a program for calculating n!/r!
where ! means factorial like 4!=4*3*2*1

here you can write function to calculate factorial and can use that for calculating factorial of n and r

Answer 13

well a function is basically some kind of a tool which when you give it a specific data/inputs it do some certain task you specified ,
say I created a function to multiply some number with another number and to give me back / return , the value of the multiplication , so let call that function :
1. func int adder(int x,int y){
2. int z = x*y;
3. return z; }

so in here in line one , the first is what type of data we want this function to return after executing/calling this function and the adder is the name of the function and what is between the brackets is the 2 numbers we are multiplying / our input data .
so now after calling this function in the main function we will just call it by its name and with the data we want to multiply it , and we save the returning value in an integer to keep it

Answer 14

function is just a symbol that indicating there have potential code and it will be expanding while you running this program

Answer 15

Hey! New to the app but not too new to programming, at your service!

A function is just a name, given to a group of statements that *do* something. Let me explain...

If there is a certain task, or certain element to your program that is used very frequently, it would be very painful to write out that same code every time you wanted the program to do it. So to save space and time, you define it once and give it a name (make the FUNCTION) and just *call* it everytime you want to use it!

In short functions are a way to modularize your work into discreet tasks/elements, to keep your program organized and readable!

Answer 16

A group of statements that together perform a task.

Answer 17

functions are like simple machines in the programming world. They basically get specific tasks done.

Answer 18

5

Answer 19

Functions are building blocks of the programs. They make the programs more modular and easy to read and manage. 

Answer 20

Given any function and its arguments (Language dependent) after some instructions there will be a result. For instance in mathmatics one dimensional variable y=f(x)=x*x (x squared), the return of the function f is the square of variable or argument x.