What is Control Flow in Rust?

• A control flow is the order in which the piece of program is executed.

• In control flow we have following expressions:

1. If expression
2. Else expression
3. Else if expression

If Expression:

• If expression allows to branch your code to any condition.

• If the condition is true then the program in if block will be executed.

• When if expression is not true then the program will be passed to further blocks of else if expressions or else expression.

• The curly brackets defining the program blocks are called arms.

Else Expression:

• Else expression gives the program an alternative block of code to execute when the condition introduced in if block evaluates to false.

• Else expression comes at last.

Example

fn main() {

let number = 3;

if number

Mansoor Ahmed Chemical Engineer,Web developer