44 lines
1.1 KiB
Markdown
44 lines
1.1 KiB
Markdown
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---
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title: if else Statements
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---
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## Introduction
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The `if` statement executes a statement if a specified condition is **true**. If the condition is **false**, another statement can be executed using the `else` statement..
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**Note:** The `else` statement is optional.
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```Go
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x := 7
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if x%2 == 0 {
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// This statement is executed if x is even
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} else {
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// This statement is executed if x is odd
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}
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```
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Multiple `if...else` statements can be nested to create an `else if` clause.
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```go
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x := 7
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if x == 2 {
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// this statement is executed if x is 2
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} else if x == 4 {
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// this statement is executed if x is 4
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} else if x == 7 {
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// this statement is executed if x is 7
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} else {
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// this statement is executed if none of the aboves is true
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}
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```
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In Go you can precede an `if` condition with a statement. The containing variable definition is then valid for the complete `if` block.
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```go
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if x := 3; x == 2 {
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// this statement is executed if x is 2
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} else if x == 3 {
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// this statement is executed if x is 3
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} else {
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// this statement is executed if none of the aboves is true
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}
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```
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