Debug.Log("Hello, World");

using UnityEngine;
using System.Collections;
public class MyGameClass : MonoBehaviour
{ void Start() {	Debug.Log("Logging Message to Console");	Debug.LogWarning("Logging Warning to Console"); Debug.LogError("Logging Error to Console"); }
}

In Unity C#, Debug.Log() and print() are functionally identical
print() is just a bit easier to remember than Debug.Log()
print() is inherited from the MonoBehavior class, so any project without
public class ExampleClass : MonoBehavior {}
will not be able to use print()