Hollerith constant

Hollerith constants, named in honor of Herman Hollerith, were used in early FORTRAN programs to allow manipulation of character data.

Early FORTRAN had no CHARACTER data type, only numeric types. In order to perform character manipulation, characters needed to be placed into numeric variables via Hollerith constants. For example the constant 3HABC specified a three-character string 'ABC'. These constants were typeless, so that there were no type conversion issues. If the constant specified fewer characters than was possible to hold in a data item, the characters were then stored in the item left-justified and blank-filled.

单词	Hollerith string
释义	Hollerith string 英语百科 Hollerith constant Hollerith constants, named in honor of Herman Hollerith, were used in early FORTRAN programs to allow manipulation of character data. Early FORTRAN had no `CHARACTER` data type, only numeric types. In order to perform character manipulation, characters needed to be placed into numeric variables via Hollerith constants. For example the constant `3HABC` specified a three-character string 'ABC'. These constants were typeless, so that there were no type conversion issues. If the constant specified fewer characters than was possible to hold in a data item, the characters were then stored in the item left-justified and blank-filled.
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Hollerith string

Hollerith constant