C + + Student performance Management system

Although compare water =. = But two lessons were written + one Noon is a pot of obsessive-compulsive disorder

Http://www.cnblogs.com/wenruo/p/4940182.html

#include <cstdio> #include <cstring> #include <iostream>using namespace Std;class student//Student    The class is a node of the management system {friend Class Studentmessage;    Student *next;    Char name[30];    Char num[30];        Double score[6];p ublic:student () {strcpy (name, "null");        strcpy (num, "null");    for (int i = 0; i < 6; ++i) score[i] = 0;        } Student (const student &a) {strcpy (name, a.name);        strcpy (num, a.num);    for (int i = 0; i < 6; ++i) score[i] = A.score[i];  } student &input () {cout << "name:";        CIN >> name;  cout << "Study No.:";        CIN >> Num;            for (int i = 0; i < 5; ++i) {cout << "enter" << (i + 1) << "Gate score:";            CIN >> Score[i];        SCORE[5] + = Score[i];    } return *this;    } student* Get_next () {return next; } void Print () {PRINTF ("%8s%10s", name, num);        for (int i = 0; i < 6; ++i) printf ("%6.2f", Score[i]);    printf ("\ n");        } void Swap ()//Swaps the current node and the next {char temp[30];        strcpy (temp, name);        strcpy (name, next->name);        strcpy (Next->name, temp);        strcpy (temp, num);        strcpy (num, next->num);        strcpy (Next->num, temp);            for (int i = 0; i < 6; ++i) {int tmp = Score[i];            Score[i] = next->score[i];        Next->score[i] = tmp;    }}};class studentmessage{protected:student *first;    Student *last;public:studentmessage () {first = last = new Student;        } ~studentmessage () {Clear ();    Delete first;           } studentmessage &append ();       Inserts a node student *find (const char *x) at the tail of the list;                       find void Query ();           Query Studentmessage &delete ();            Delete Find node Studentmessage &clear (); Delete allNode Studentmessage &sort ();                       sort void print () by Class I course;                         Show all nodes int menu ();    Display menu};studentmessage &studentmessage::append () {Student x;    X.input ();    Student *ptr = last;    *ptr = x;    last = new Student;    Ptr->next = Last; return *this;}    Studentmessage &studentmessage::D elete () {char x[30];    cout << "Enter the information to be deleted (school number or name) \ n";    CIN >> X;    Student *ptr = Find (x);        if (ptr = = last) {cout << "no relevant information found \ n";    return *this;    } ptr->print (); cout << "Do you want to delete this information?"    (is input 1, no input 0) ";    CIN >> X;            if (*x = = ' 1 ') {if (ptr = = first) {first = first->next;        Delete first;            } else {student *temp = first;            while (temp->next! = ptr) temp = temp->next;            Temp->next = ptr->next;        Delete ptr;    } cout << "deleted \ n";    } else{cout << "cancelled \ n"; } return *this;}    Studentmessage &studentmessage::clear () {char ch[30]; cout << "will delete all information.    Confirm, press Y ";    CIN >> ch;        if (*ch! = ' y ' && *ch! = ' y ') {cout << "cancelled \ n";    return *this;    } student *ptr = first;        while (ptr! = last) {Student *next = ptr->next;        Delete ptr;    ptr = next;    } first = last; return *this;}        void Studentmessage::p rint () {if (first = = last) {cout << "no information \ n";    return;    } cout << "---------------------------------score list------------------------------" << Endl;    cout << "Serial number 1 Results 2 results 3 results 4 results 5 Total" << Endl;    int no = 1;    Student *ptr = first;        while (ptr! = last) {printf ("%3d:", no++);        Ptr->print ();    PTR = ptr->next;    }}student *studentmessage::find (const char *x) {student *ptr = first; while (ptr! = last) {if (sTRCMP (ptr->name, x) = = 0 | |        strcmp (ptr->num, x) = = 0) break;    PTR = ptr->next; } return ptr;}    void Studentmessage::query () {char x[30];    cout << "Enter the information you want to inquire about (study number or name)";    CIN >> X;    Student *ptr = Find (x);    if (ptr = = last) {cout << "no query to relevant information \ n";    } else {ptr->print ();    }}//Bubble sort Studentmessage &studentmessage::sort () {int x; cout << "input which course do you want to follow?"    (1-5) Total input 6): ";    CIN >> X;    x--;    Student *ptr, *cnt = last;        while (cnt! = first) {ptr = first;                while (ptr->next! = cnt) {if (ptr->next->score[x] > Ptr->score[x]) {            Ptr->swap ();        } ptr = ptr->next;    } cnt = ptr; } return *this;}    int Studentmessage::menu () {cout << "===============================\n";    cout << "student performance management system \ n";    cout << "1. Show all student results \ n"; cout << "2. Add information \ n";    cout << "3. Enquiry information \ n";    cout << "4. Delete information \ n";    cout << "5. Order of achievement \ n";    cout << "6. Delete all information \ n";    cout << "0. exit \ n";    cout << "===============================\n";    int ch;    CIN >> ch; return ch;}    int main () {studentmessage ls;    int ch;            while (ch = ls.menu ()) {switch (ch) {case 1:ls.print (); Case 2:ls. Append ();            Break Case 3:ls. Query ();            Break Case 4:ls. Delete ();            Break Case 5:ls. Sort ();            Break Case 6:ls. Clear ();        Break }} return 0;}

　　

C + + Student performance Management system