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Hungarian notation

Hungarian notation is an identifier naming convention in computer programming, in which the name of a variable or function indicates its intention or kind, and in some dialects its type. The original Hungarian Notation uses intention or kind in its naming convention and is sometimes called Apps Hungarian as it became popular in the Microsoft Apps division in the development of Word, Excel and other apps. As the Microsoft Windows division adopted the naming convention, they used the actual data type for naming, and this convention became widely spread through the Windows API; this is sometimes called Systems Hungarian notation.

  • bBusy : boolean

  • chInitial : char

  • cApples : count of items

  • dwLightYears : double word (Systems)

  • fBusy : flag (or float)

  • nSize : integer (Systems) or count (Apps)

  • iSize : integer (Systems) or index (Apps)

  • fpPrice: floating-point

  • dbPi : double (Systems)

  • pFoo : pointer

  • rgStudents : array, or range

  • szLastName : zero-terminated string

  • u16Identifier : unsigned 16-bit integer (Systems)

  • u32Identifier : unsigned 32-bit integer (Systems)

  • stTime : clock time structure

  • fnFunction : function name