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What will happen if we put a semi-colon after a for loop in C++? (suppo.fi)

submitted 1 year ago by [email protected] to c/programming

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[–] [email protected] 18 points 1 year ago* (last edited 1 year ago) (1 children)

A semicolon ends a statement, and semicolon is a statement on its own. One that does nothing. That's why you can write

int i;
for (i = 0; i ᐸ 3; i++);

to set i = 3. You can use that pattern to find something in an iterator, etc. But I would prefer

int i = 0;
while (i ᐸ 3) {
   i++;
}

for readability.

[–] [email protected] 18 points 1 year ago* (last edited 1 year ago) (1 children)

Your less thans got HTML-escaped into < and I spent embarrassingly long trying to figure out what pointer magic you were demonstrating

[–] [email protected] 4 points 1 year ago (1 children)

Yeah, both Voyager and the normal lemmy web client escape the less-than sign. I tried it twice on both clients.