Functions

Question

who can explain the functions in c ++????

Answer 1

A function is a group of statements that together perform a task. Every C++ program has at least one function, which is main(). A function is known with various names like a method or a sub-routine or a procedure etc. There are two types of Function.

1/ Built-in Function
2/ User Define Function

A C++ function definition consists of a function header and a function body. Here are all the parts of a function −

1/ Return Type
2/ Function Name
3/ Parameters
4/ Function Body

Example :

#include <iostream>
using namespace std;

int sum(int a = 20, int b = 30) /* function with parameters. function name = sum, parameters = a,b & value type = integer. */
{
//function body
int result;
result = a + b;

return (result);
}

int main ()
{
// local variable declaration:
int a = 100;
int b = 200;
int result;

// calling a function to add the values.
result = sum(a, b);
cout << "Total value is :" << result;

return 0; // return value.
}

Answer 2

Would you like for me the explain the function of functions? It's exactly that. Set of code that has a particular purpose, a particular function, that can be called upon from other code.

https://www.sololearn.com/Course/CPlusPlus/
Module 4: Functions

^Keep going through the course and Module 4 explains a lot about functions, what they are, and how you use them.

Best of luck!