From 1a00ff66151e26906eb3a6155e3ac48d8103da72 Mon Sep 17 00:00:00 2001
From: Shikong <919411476@qq.com>
Date: Mon, 4 Oct 2021 03:06:48 +0800
Subject: [PATCH] =?UTF-8?q?docs:=20package=20=E5=8C=85?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 base/package/calc/calc.go | 13 +++++++++++++
 base/package/go.mod       |  3 +++
 base/package/main.go      | 14 ++++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 base/package/calc/calc.go
 create mode 100644 base/package/go.mod
 create mode 100644 base/package/main.go

diff --git a/base/package/calc/calc.go b/base/package/calc/calc.go
new file mode 100644
index 0000000..5690bc3
--- /dev/null
+++ b/base/package/calc/calc.go
@@ -0,0 +1,13 @@
+package calc
+
+// 包中的标识符
+// 如果首字母为小写 则表示为私有 只在当前包内生效 对外不可见
+// 如果为大写 则表示为共有 对外部可见
+
+func Add(x, y int) int {
+	return x + y
+}
+
+func sub(x, y int) int {
+	return x - y
+}
diff --git a/base/package/go.mod b/base/package/go.mod
new file mode 100644
index 0000000..e16f11f
--- /dev/null
+++ b/base/package/go.mod
@@ -0,0 +1,3 @@
+module package
+
+go 1.16
diff --git a/base/package/main.go b/base/package/main.go
new file mode 100644
index 0000000..80b328a
--- /dev/null
+++ b/base/package/main.go
@@ -0,0 +1,14 @@
+package main
+
+import (
+	"fmt"
+	// 如果使用 go mod init package 建立主包 则为相对于主包的路径
+	"package/calc"
+	// 默认使用相对于 GOPATH/src 下的路径
+	//"skcks.cn/Shikong/golang-study/base/package/calc"
+)
+
+func main() {
+	fmt.Println(calc.Add(1, 2))
+
+}