Execution character set
The execution character set is the implementation-defined set of characters and their representations used during program execution.
Modern C, Third Edition
An execution character set is the implementation-defined mapping used to represent characters during C program execution.
- How it is used
- Uses the execution character set to explain why numerically encoded characters and string escapes are not fully portable.
- How deep it goes
- Explains hexadecimal escape consumption and platform dependence, but stops short of detailing character-set encodings.
- Examples
- Uses the strings "\xdeBruyn" and "\xde""Bruyn" to demonstrate hexadecimal escape boundaries.
- What you can do after
- Evaluate whether numerically encoded characters and escape sequences are portable across execution environments.
Read how Modern C, Third Edition explains execution character set →
Modern C
The execution character set is the implementation-defined character set and numeric encoding used when a C program executes.
- How it is used
- Guides character-literal, string-literal, and numeric-conversion code toward portable assumptions.
- How deep it goes
- Defines implementation-dependent encoding and escape parsing, but stops short of specifying platform mappings.
- Examples
- Uses hexadecimal string escapes and a base-36 conversion function to expose encoding and character-order assumptions.
- What you can do after
- Evaluate/understand portability risks in encoded characters and avoid unverified ordering assumptions in conversion code.
Related concepts
- numeric character constantconfigures · A numeric character constant is a C character constant whose character code is written using octal or hexadecimal escape notation.
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