• Victoria@lemmy.blahaj.zone
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      4 days ago

      from what i could find “because it was designed that way”

      For what it’s worth, C23 has updated labels to allow being placed before declarations.

    • sik0fewl@piefed.ca
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      4 days ago

      Possibly because declarations were originally not statements in C? You could only declare variables at the start of a function, but not assign them to something at the same time.

      Not sure why it still wouldn’t be allowed, though, especially if an empty statement can be a statement.

      • balsoft@lemmy.ml
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        4 days ago

        I think it evolved like that:

        1. Declarations are separate entities to statements, because declarations do not translate to a machine code instruction
        2. Labels only make sense when attached to statements because they need to point to a particular machine code instruction <-- This should have been changed at least when declarations were allowed to be mixed with statements in compound statements
        3. Definitions are declarations plus an assignment, let’s make them a subset of a declaration <-- I think this is the biggest mistake of them all
        4. “Well, it’s already been that way for 40 years, too late to change it now!”
    • terranoid@lemmy.cafe
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      4 days ago

      When it’s designed to be an expression

      while (int x = 1) { ... Modify x to eventually be zero... }
      

      That might make sense even if it looks weird. Kinda like a for loop.