ZX Spectrum Basic
{{language|ZX Spectrum Basic |exec=interpreted |site=http://www.worldofspectrum.org/ZXBasicManual/}} {{implementation|BASIC}}'''ZX Spectrum Basic''' is the [[BASIC]] built into the ROM of the ZX Spectrum Computer.
==Features==
- Language is interpreted (but third party compiler is available).
- Line numbers are required
- Line numbers must be no longer than four digits
- No [[named locations]]
- Some [[Terminal Control]] capabilities
- Supports [[colour]]
- Support for direct display [[graphics]]
- Support for sound via the [[speaker]]
- No support for [[scope]]d variables
- No support for [[structure]]d variables
- No [[command line parameter]]s
- No support for [[environment]]
- Supports output tho the [[line printer]] via the [[lprint]] command
- No direct support for error handling, but error handling can be achieved using assembly language by changing the [[error handler]] address
- Support for streams when using [[Interface 1]], but no support for [[freefile]]
- Can read keystrokes using
INKEY$
- No support for multiple line
IF
conditionals - No conditional compilation directives
- no [[hashbang]] mechanism
- Variables have to be defined before use
- The GO TO command has a space in the middle
- VAL function interprets expressions
- INPUT function can interpret expressions (unless LINE INPUT is used)
{{language programming paradigm|procedural}} {{language programming paradigm|imperative}}