Created
January 31, 2021 16:36
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| interface IDuck{ | |
| walk():void; | |
| quack():void; | |
| } | |
| class Duck implements IDuck{ | |
| walk():void { | |
| console.log("Duck walk"); | |
| } | |
| quack():void { | |
| console.log("Duck quack"); | |
| } | |
| toString():String{ | |
| return "I am a duck who walks and quacks"; | |
| } | |
| } | |
| interface IPelican{ | |
| walk():void; | |
| quack():void; | |
| dive():void; | |
| } | |
| class Pelican implements IPelican{ | |
| walk():void { | |
| console.log("Pelican walk"); | |
| } | |
| quack():void { | |
| console.log("Pelican quack"); | |
| } | |
| dive():void { | |
| console.log("Pelican dive"); | |
| } | |
| toString():String{ | |
| return "I am a pelican who walks, quacks and dives"; | |
| } | |
| } | |
| class Platypus { | |
| walk():void { | |
| console.log("Platypus walk"); | |
| } | |
| growl():void { | |
| console.log("Platypus growl"); | |
| } | |
| toString():String{ | |
| return "I am a platypus who walks and growls"; | |
| } | |
| } | |
| function print(duck:IDuck){ | |
| console.log("Input is a duck\n" + duck.toString()); | |
| } | |
| let duck = new Duck(); | |
| let pelican = new Pelican(); | |
| let platypus = new Platypus(); | |
| print(duck); | |
| print(pelican); | |
| print(platypus); |
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