#include<iostream.h> #include<string.h> class xm { private: char *str;//字符型指针 char xing[20]; char ming[20]; int chd; //拼音长度的缩写 public: xm() { str=0; chd=0; } void getxm(); void showxm(const xm &ss); friend xm operator+(const xm &ss) { xm tmp; tmp.chd=(strlen(ss.xing)+strlen(ss.ming)); tmp.str=new char(chd+1); strcpy(tmp.str,ss.xing); strcat(tmp.str,ss.ming); return(tmp); } }; void xm::getxm() { cout<<"请输入你的姓："<<endl; cin>>xing; cout<<"请输入你的名："<<endl; cin>>ming; } void xm::showxm(const xm &ss) { cout<<"你的姓名是："<<(ss.xing+ss.ming)<<endl; } main() { xm var; var.getxm(); var.showxm(var); return 0; }

// sorry, your program ist total wrong. you should know more about class and object.
#include<iostream>
#include <cstdlib>
#include<string>
using namespace std;

class xm
{
private:
    char * str;
    string xing;
    string ming;
    int chd;   
   
public:
    xm()
    {
        str=0;
        chd=0;
    }
    // in prinzip, you should write your copy constructur and assignment function
    // so that it can really deep copy, because of the pointer variable: str.
    void getxm();
    void showxm();
    ~xm(){ delete [] str; }
};

void xm::getxm()
{
    cout<<"Please enter your last name"<<endl;
    getline(cin, xing);
    cin.get();  // add this function, so that you can really get the next input.
   

    cout<<"Please enter your first name:"<<endl;
    getline(cin, ming);

    int size1 = xing.size();
    int size2 = ming.size();
    chd =  size1 + size2;

    str = new char [chd + 2];
    strcpy(str, xing.begin());
    strcat(str, " ");
    strcat(str, ming.begin());
}
void xm::showxm()
{
    cout<<"Your name is:"<<str<<endl;
}
int main()
{
    xm var;
    var.getxm();
    var.showxm();
   
    system("pause");
    return 0;
}

给我所学的不一样，可能我还没有学到，不过非常谢谢你