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# take home exam - Programming Language Concepts Name Date 1...

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Programming Language Concepts Name: ________________________ Date: _____________________ 1. Write regular expressions to capture the following. Numeric constants in C. These are octal, decimal, or hexadecimal floating-point values. An octal integer begins with 0, and many contain only the digits 0-7. A hexadecimal integer begins with 0x or 0X, and may contain only the digits 0-9 and a/A-f/F. A decimal floating-point value has a fractional portion (beginning with a dot) or an exponent (beginning with E or e). Unlike a decimal integer it is allowed to start with 0. A hexadecimal floating-point value has an optional fractional portion and a mandatory exponent (beginning with P or p). In either decimal or hexadecimal, there may be digits to the left of the dot, the right of the dot, or both, and the exponent itself is given in decimal, with an optional leading + or – sign. An integer may end with an optional U or u (indicating “unsigned”), and/or L or l (indicating “long”) or LL or ll (indicating “long long”). A floating –point value may end with an optional F or f (indicating ‘float” –

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