def StudentClass.student_count
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# encoding: utf-8#E6.3-2.rbclass StudentClass@@count=0def initialize@@count+=1enddef StudentClass.student_countputs "This class have #@@count students."endendp1=StudentClass.newp2=StudentClass.newStudentClass.student_count # This class have 2 students.p3=StudentClass.newp4=StudentClass.newStudentClass.student_count # This class have 2 students.=begin This class have 2 students.This class have 4 students.请按任意键继续. . .=end
