The C Major scale is a major scale which means it has the following definition:
R 2 3 4 5 6 7
The notes in the C Major scale are:
C D E F G A B C
There are 7 notes in the scale with no flats and no sharps.
The scale definition for the C Major guitar scale is R 2 3 4 5 6 7 which means that the interval formula for the scale in semitones is:
2 2 1 2 2 2 1
You can also write this as note intervals:
Tone Tone Semitone Tone Tone Tone Semitone
Let's take a look at C Major on the guitar fretboard. Here is the scale across the entire fretboard:
Here is a quick recap of all the information about the C Major covered in this page:
The C Major Scale is a major scale.
The definition of the C Major scale is: R 2 3 4 5 6 7
The notes in the C Major guitar scale are: C D E F G A B C
The interval formula for the C Major scale is: 2 2 1 2 2 2 1
The note intervals in the C Major scale are: Tone Tone Semitone Tone Tone Tone Semitone