Numeric base
A numeric base, or radix, is the positional numeral-system value that determines a numeral’s digit set and the place-value scale of its digits.
Python Workout, Second Edition
A number base is the radix that determines the positional values of digits in a numeral system.
- How it is used
- Uses numeric bases to interpret string input as integers during conversion exercises.
- How deep it goes
- Explains int’s base argument and practices bases 2–16, without detailing numeral-system internals.
- Examples
- Uses hexadecimal conversion and a guessing game that accepts numbers in randomly selected bases.
- What you can do after
- Apply it via Python’s int function to interpret user-entered strings in a specified base.
Read how Python Workout, Second Edition explains numeric base →
Modern C
A number base is the radix used to interpret the positional digits of a numeric string.
- How it is used
- Uses numeric bases to parse textual numbers from lines and command-line arguments.
- How deep it goes
- Explains specified and prefix-deduced bases with worked parsing boundaries, but defers conversion-function internals.
- Examples
- Demonstrates base 10 and base 0 on "0789a", then applies base 0 to a command-line argument.
- What you can do after
- Apply it via strtoul or strtoull to choose explicit bases or prefix-based interpretation for numeric strings.
Related concepts
- to_iconfigures · to_i is a Ruby conversion method that produces an integer representation of a value and can interpret a string in a specified numeric base.
- modulekind of · A module is a distinct, bounded software unit that groups related code or functionality and provides an organizational or interaction boundary within a larger system.
- integerconfigures · An integer is a whole number with no fractional part, including negative numbers, zero, and positive numbers.
- strtoulused by · strtoul is a C standard library function that converts the initial portion of a string to an unsigned long value using a specified or inferred integer base.
- floating-point arithmeticconfigures · Floating-point arithmetic is computation using finite-precision representations of real numbers, in which rounding and limited range can make results differ from exact real-number arithmetic.
- iteratehas part · Iterate is an operation that advances through successive values or states according to specified functions or iteration rules.
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