I don't know what I'm doing wrong

[fair glen]

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[crisp magnet]

what's the compiler command you're using?

[arctic thicket]

I'm pretty sure it ends with -o

without argument

which it politely reminds about

your option is to skip -o at all, give the name of the final executable (most likely) after -o or re-check if you didn't misread that in tutorial and it wasn't maybe -c or something

[fair glen]

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