Check out example codes for "unity assets store". It will help you in understanding the concepts better.

Code Example 1

public class PlayAudio : MonoBehaviour
{
    public AudioSource audioSource;
    public AudioClip clip;
    public float volume=0.5f;

    void Start()
    {
        audioSource.PlayOneShot(clip, volume);
    }
}

Code Example 2

TypeError: unsupported operand type(s) for -: 'Fraction' and 'Fraction'

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