About function

Hello! I will try to share my learning about functions with you.

Questions and Answers:

1. What is a function?

A function is a reusable piece of code. It is used in large projects, when building websites and applications, to avoid code duplication and to make the code understandable. A function written once can be called several times in the necessary places.

2. How is the function used?

To use a function, it must first be declared and then called. The following image and code example illustrate this process:

Example:

#include <iostream>

using namespace std;

void Func(int func) {
    cout << func << endl;
}

int main() {
    int son = 5;
    Func(son); // Funksiyani chaqirish
    return 0;
}

In this example, the Func function is declared and called inside the main function. The value of the son variable is passed as a parameter to the function.

3. What are the advantages of the function?

Main advantages of functions:

• Code reuse: Code written once can be used several times.
• Code Comprehensibility: Breaking code into chunks makes it easier to read and understand.
• Save code: Reduces code size by avoiding code duplication.
• Makes code modification easier: When you need to change a part of the code, just change the function.

4. How many types of function?

Functions differ in the type of value they return. For example:

• int: Returns integers.
• char: Returns a single character.
• string: Returns the text.
• bool: Returns true or false.
• void: Returns no value.
• float: Returns decimal numbers.
• And so on...

More information:

The

void function does not return any value. Functions are declared outside the main() function.

Functions are a very important tool in programming and learning them is very useful for a programmer. If you have any questions, please leave a comment!

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