Quiz · Interfaces · lesson 2 of 10
Quiz — satisfying an interface
What happens when this program is built and run?
package main
import "fmt"
type Shape interface{ Area() float64 }
type Square struct{ Side int }
func (s Square) Area() int { return s.Side * s.Side }
func main() {
var sh Shape = Square{Side: 2}
fmt.Println(sh.Area())
}Subscribe to take the course
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