各位大佬，这个程序哪错了#include<iostream>#include<cstring>using namespace std;class Student{private: int num; char name[20]; char sex;public: void set_date(int n, char *p, char s) { num = n; strcpy(name,p); sex = s; } void display() { cout << "num:" << num << '\n'; cout << "name:" << name << '\n'; cout << "sex:" << sex <<'\n'; }};int main(){ Student stud1, stud2; stud1.set_date(1, "She", 'f'); stud2.set_date(2, "He", 'm'); stud1.display(); stud2.display(); return 0;}