how many sharps in the key of a
A major A major (or the key of A) is a major scale based on A, with the pitches A, B, C♯, D, E, F♯, and G♯. Its key signature has three sharps.
C Sharp (programming language) The name "C sharp" was inspired by musical notation where a sharp indicates that the written note should be made a semitone higher in pitch.[33] This is similar to the language name of C++, where "++" indicates that a variable should be incremented by 1. The sharp symbol also resembles a ligature of four "+" symbols (in a two-by-two grid), further implying that the language is an increment of C++.[34]