From b52a6b08b2df8db4aa3156e90183f4311bb5739c Mon Sep 17 00:00:00 2001
From: Shikong <919411476@qq.com>
Date: Tue, 14 Sep 2021 00:06:24 +0800
Subject: [PATCH] =?UTF-8?q?docs:=20if=20=E4=B8=8E=20=E5=B1=80=E9=83=A8?=
 =?UTF-8?q?=E5=8F=98=E9=87=8F?=
MIME-Version: 1.0
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---
 base/if/main.go | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 base/if/main.go

diff --git a/base/if/main.go b/base/if/main.go
new file mode 100644
index 0000000..c991f33
--- /dev/null
+++ b/base/if/main.go
@@ -0,0 +1,26 @@
+package main
+
+import "fmt"
+
+func main() {
+	var a int
+	a = 22
+
+	if a > 18 {
+		fmt.Printf("变量 a: %#v, 已成年\n", a)
+	} else if a == 18 {
+		fmt.Printf("变量 a: %#v, 刚成年\n", a)
+	} else {
+		fmt.Printf("变量 a: %#v, 未成年\n", a)
+	}
+
+	// 作用域
+	// 这里的 a 为局部变量, 仅在 if 语句中 生效
+	if a := 18; a > 18 {
+		fmt.Printf("局部变量 a: %#v, 已成年\n", a)
+	} else if a == 18 {
+		fmt.Printf("局部变量 a: %#v, 刚成年\n", a)
+	} else {
+		fmt.Printf("局部变量 a: %#v, 未成年\n", a)
+	}
+}