# 3.3 Binary, Octal, Hexadecimal, and Hollerith Constants

Binary, octal, hexadecimal, and Hollerith constants are nondecimal constants. They have no intrinsic data type, but assume a numeric data type depending on their use.

Fortran 95/90 allows unsigned binary, octal, and hexadecimal constants to be used in DATA statements; the constant must correspond to an integer scalar variable.

In Compaq Fortran, binary, octal, hexadecimal, and Hollerith constants can appear wherever numeric constants are allowed.

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