-module(helloworld). -export([addnum/2,addnum/3,start/0]). addnum(X,Y) -> Z = X+Y, io:fwrite("~w~n",[Z]). addnum(X,Y,Z) -> A = X+Y+Z, io:fwrite("~w~n",[A]). start() -> addnum(5,5), addnum(5,2,8).
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