go by example part 2

5-go-by-example/12-function.go

@@ -0,0 +1,24 @@
+package main
+
+import "fmt"
+
+// function that takes two ints and returns their sum as an int
+// Go requires explicit returns
+func plus(a int, b int) int {
+	return a + b
+}
+
+// multiple consecutive parameters of the same type,
+// may omit the type name for the like-typed parameters up to the final parameter that declares the type
+func plusPlus(a, b, c int) int {
+	return a + b + c
+}
+
+func main() {
+	// Call a function
+	res := plus(1, 2)
+	fmt.Println("1+2 =", res)
+
+	res = plusPlus(1, 2, 3)
+	fmt.Println("1+2+3 =", res)
+}