设计父亲类CFather、母亲类CMother和子女类CChild，其主要数据是姓、名、年龄与民族，子女继承父亲的姓、母亲的民族，最后输出子女及其父母的姓名、年龄和民族信息。-The design father class CFather, mother the class CMother and children' s classes CChild its main data is first name, last name, age and ethnicity, children inherit the father' s name, mother of the nation, and finally output the names of the children and their parents, age and ethnic information.