#include <iostream.h>class student{private:?char name[20];?char sex;?int num;?float aver;?float s1,s2,s3,s4;public:?student(char n,char s,int u);?float average(float s1,float s2,float s3,float s4);?void show();};student::student(char n[20],char s,int u,float s_1,float s_2,float s_3,float s_4){?name[20]=n[20];?sex=s;?num=u;?s1=s_1;?s2=s_2;?s3=s_3;?s4=s_4;}float student::average(){?aver=(s1+s2+s3+s4)/4;}void student::show(){?cout<<"姓名："<<name<<"性別："<<sex<<"學號："<<num<<"平均分："<<aver<<endl;}void main(){???? student stu1("xiaoli",'M',1,80,90,70,60)??stu1.average();??stu1.show();}哪里錯了