Update main.go

main.go

@@ -1,6 +1,31 @@
-package main                        //[1]
-import "fmt"                        //[2]
+package main
 
-func main() {                       //[3]
-    fmt.Println("Witaj świecie! 2")   //[4]
+import "fmt"
+
+type person struct {
+	name string
+	age  int
+}
+
+func Older(p1, p2 person) (person, int) {
+	if p1.age > p2.age {
+		return p1, p1.age - p2.age
+	}
+	return p2, p2.age - p1.age
+}
+
+func main() {
+	var tom person
+
+	tom.name, tom.age = "Tom", 18
+	bob := person{age: 25, name: "Bob"}
+	paul := person{"Paul", 43}
+
+	tb_Older, tb_diff := Older(tom, bob)
+	tp_Older, tp_diff := Older(tom, paul)
+	bp_Older, bp_diff := Older(bob, paul)
+
+	fmt.Printf("Of %s and %s, %s is older by %d years\n", tom.name, bob.name, tb_Older.name, tb_diff)
+	fmt.Printf("Of %s and %s, %s is older by %d years\n", tom.name, paul.name, tp_Older.name, tp_diff)
+	fmt.Printf("Of %s and %s, %s is older by %d years\n", bob.name, paul.name, bp_Older.name, bp_diff)
 }