Исходники и презентации

lessons/errors/errno/main.go

@@ -0,0 +1,32 @@
+package main
+
+import "fmt"
+
+const (
+	OkStatus = iota
+	EvenNumberErr
+	ZeroNumberErr
+)
+
+var Errno = OkStatus
+
+func divide(lhs, rhs int) int {
+	if rhs == 0 {
+		Errno = ZeroNumberErr
+		return 0
+	} else if lhs%2 == 0 || rhs%2 == 0 {
+		Errno = EvenNumberErr
+		return 0
+	}
+
+	Errno = OkStatus
+	return lhs / rhs
+}
+
+func main() {
+	x := 100
+	y := 0
+
+	value := divide(x, y)
+	fmt.Println(value, Errno)
+}