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> will that function also get to return a u8?

No, the main function (the entry point of the entire program) is special cased. Have a look at the source code. There you can see it's calling the user defined main function and handling its return value / error.

https://github.com/ziglang/zig/blob/2d888a8e639856e8cb6e4c6f...

> Also, what happened to argv/argc?

You can access argv with std.os.argv which is a slice of null terminated strings. It's better to go with std.process.argsAlloc though (requires an allocation but works on all supported platforms).




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