# Vstup a výstup

Demonstrations:

 1. ‹files›      – opening files, reading and writing strings
 2. ‹streams›    – from values to strings and back
 3. ‹format›     – overloading formatting operators

Elementary exercises:

 1. ‹force›      – input and output operators

Preparatory exercises:

 1. ‹set›        – read and write sets of numbers,
 2. ‹fixnum›     – fixed point numbers with formatted IO,
 3. ‹tmpfile›    – an auto-erasing temporary file
 4. ‹parse›      – parser for a simple low-level language,
 5. ‹grep›       – print matching lines,
 6. ‹csv›        – parse comma-separated numeric data.

Regular exercises:

 1. ‹xxx›
 2. ‹xxx›
 3. ‹xxx›
 4. ‹xxx›
 5. ‹json›       – format a string → string map as JSON
 6. ‹cpp› †      – a very simple C preprocessor