Call a function (ofstream) C++ -

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hello have probleme code.i don't know how call function ofstream.

//username username(ofstream& reg); //password password(ofstream& reg); //email email(ofstream& reg); //gender gender(ofstream& reg); 
line(22) error is: expected primary-expression before '&' token line(24) error is: expected primary-expression before '&' token line(26) error is: expected primary-expression before '&' token line(28) error is: expected primary-expression before '&' token

remove ofstream &. function calls don't include types.


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