Go - If Statement
If
The if statement is used to execute a block of code if a certain condition is true.
go
// The condition is an expression that evaluates to a boolean value.if condition { // Executed if the condition is `true`}Else
An optional else clause can be used to execute code when the condition is false.
go
if condition { // Executed if the condition is `true`} else { // Executed if the condition is `false`}Else If
Multiple conditions may tested using else if, the first condition that evaluates to true its block will be executed.
go
n := 10if n < 0 { fmt.Println("n is a negative number")} else if n > 0 { fmt.Println("n is a positive number")} else { fmt.Println("n is zero")}Simple Statement
The if statement can start with a short statement that is executed before the condition.
go
if n := getNumber(); n < 0 { // The variables declared by the short statement // are only available in the scope of the if statement.} else { // The variables are also available inside any of the `else` blocks.}