hi, i made this mostly as a joke. it started when i found that replacing (almost) all skip(';') in tcc with if(tok==';') skip(';') essentially adds some highly basic auto semicolon insertion. then i expanded on the idea and kept adding more stuff and fixing up the semicolon stuff a bit and added python style indentation.

so now it's a fork of tcc (fabrice bellard's tiny c compiler) where semicolons are optional and you can use indentation instead of braces, so you can write stuff like

 int main(): printf("hello\n") return 0
its not just at the end of lines by the way

 int a, b float c // a semicolon is inserted between b and float for (int i=1 i <= 5 i++): // ... or between statements printf("%d ", i)
the indentation part is just a pass before lexing that turns lines ending in "):" or "else:" into "{" and adds the closing "}" when the indentation drops.

the obvious problem is that without semicolons a statement just keeps going as long as the next token can continue it. so if a line starts with *, ( or - it gets glued onto the previous line, same as js asi. "b = a" followed by a line with "-1" compiles fine and gives you b = a - 1. i listed the ones i know about in the readme.

normal c with semicolons still works and you can mix both. -run and shebangs work like in tcc. it can compile itself

demo page with a few examples: https://tanjim.org/slcc/demo.html

please don't use this for anything real

Comments URL: https://news.ycombinator.com/item?id=50426388

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