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RUST Create a function

Functions are "self contained" modules of code that accomplish a specific task. Functions usually "take in" data, process it, and "return" a result. Once a function is written, it can be used over and over and over again. Functions can be "called" from the inside of other functions.. Functions organize the program into logical blocks of code. Once defined, functions may be called to access code. This makes the code reusable. Moreover, functions make it easy to read and maintain the program’s code.

Defining a Function

A function definition specifies what and how a specific task would be done. Before using a function, it must be defined. The function body contains code that should be executed by the function. The rules for naming a function are similar to that of a variable. Functions are defined using the fn keyword.

Hello World function Example

fn fn_hello_world(){
 println!("Hello World ");

in RUST To call function

fn fn_hello_world(){
 println!("Hello World ");

fn main(){

Output for above code

Hello World


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