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本篇內(nèi)容主要講解“用C++實(shí)現(xiàn)學(xué)生成績(jī)管理系統(tǒng)最新版”，感興趣的朋友不妨來看看。本文介紹的方法操作簡(jiǎn)單快捷，實(shí)用性強(qiáng)。下面就讓小編來帶大家學(xué)習(xí)“用C++實(shí)現(xiàn)學(xué)生成績(jī)管理系統(tǒng)最新版”吧!
學(xué)生成績(jī)管理系統(tǒng)，供大家參考，具體內(nèi)容如下
（1）輸入同學(xué)的學(xué)號(hào)，姓名，三門科成績(jī)(應(yīng)用數(shù)學(xué)、大學(xué)英語(yǔ)、計(jì)算機(jī)應(yīng)用基礎(chǔ))
（2）可以計(jì)算出每個(gè)學(xué)生三門課的平均成績(jī)。
（3）可通過輸入姓名、學(xué)號(hào)查詢成績(jī)，也可通過姓名修改學(xué)生信息，也可通過主界面刪除學(xué)生信息，以及清楚所有信息
廢話不說，直接代碼，歡迎指正。
大家CV可能有不兼容的情況，可以跟我滴滴，盡可能解決問題地回復(fù)。
#include <cstdlib>
#include <iostream>
#include <string>
using namespace std;
#define null NULL
class student
{
private:
friend class studentMessage;
student *next; //節(jié)點(diǎn)指針
string name; //學(xué)生姓名
int age; //年紀(jì)
int id; //學(xué)號(hào)
double score[3]; //三科成績(jī)
double total; //總分
double average; //平均成績(jī)
public:
student(string _name,int _age,int _id,double *_score)
{
name = _name;
age = _age;
id = _id;
score[0] = _score[0];
score[1] = _score[1];
score[2] = _score[2];
total = score[0]+score[1]+score[2];
average = total/3;
next = NULL;
}
student() //為studentMessage初始化頭結(jié)點(diǎn)用
{
name = "null";
age = 0;
id = 0;
score[0]=score[1]=score[2]=0;
total = 0;
average = 0;
next = NULL;
}
~student(){}
void swap(student*);
};
void student::swap(student *q)
{
string _name;
int _age,_id;
double _score[3],_total,_average;
_name = name;
name = q->name;
q->name = _name;
_age = age;
age = q->age;
q->age = _age;
_id = id;
id = q->id;
q->id = _id;
_score[0] = score[0];
score[0] = q->score[0];
q->score[0] = _score[0];
_score[1] = score[1];
score[1] = q->score[1];
q->score[1] = _score[1];
_score[2] = score[2];
score[2] = q->score[2];
q->score[2] = _score[2];
_total = total;
total = q->total;
q->total = _total;
_average = average;
average = q->average;
q->average = _average;
}
class studentMessage
{
private:
student *first; //頭指針
int num; //信息中的學(xué)生人數(shù)
public:
studentMessage()
{
num = 0; //初始化學(xué)生人數(shù)為0
first = new student; //初始化頭結(jié)點(diǎn)
}
~studentMessage(){delete first;}
/*管理系統(tǒng)常規(guī)操作*/
void Insret(void); //插入
void Display(void); //顯示
void Delete(void); //刪除
void Search(void); //搜索
void Change(void); //改動(dòng)
void sortByLesson1(void); //按成績(jī)一來排序
void sortByLesson2(void); //按成績(jī)二來排序
void sortByLesson3(void); //按成績(jī)?nèi)齺砼判?
void sortByTotal(void); //按總分來排序
void SearchByid(void); //按照學(xué)號(hào)查找
void SearchByname(void); //按照姓名查找
int menu(void); //初始的菜單
void clear(void); //清空列表
};
int studentMessage::menu(void)
{
int ch;
cout<<"**********************************************************************"<<endl;
cout<<"======================================================================"<<endl;
cout<<"***************************學(xué)生成績(jī)管理系統(tǒng)***************************"<<endl;cout<<endl;
cout<<"1.顯示所有學(xué)生成績(jī)"<<endl;
cout<<"2.添加學(xué)生信息"<<endl;
cout<<"3.查詢學(xué)生信息"<<endl;
cout<<"4.修改學(xué)生信息"<<endl;
cout<<"5.刪除最下面一個(gè)學(xué)生信息"<<endl;
cout<<"6.刪除所有信息"<<endl;
cout<<"0.退出系統(tǒng)"<<endl;cout<<endl;
cout<<"********************Copyright@ By Jeaven Wong**************************"<<endl;
cout<<"======================================================================="<<endl;
cout<<"***********************************************************************"<<endl;
cin >> ch;
cout<<"\n\n\n"<<endl;
return ch;
}
//插入
void studentMessage::Insret(void)
{
string name;
int age;
int id;
double score[3];
cout<<"請(qǐng)輸入學(xué)生姓名: ";
cin>>name;
cout<<"請(qǐng)輸入學(xué)生年齡: ";
cin>>age;
cout<<"請(qǐng)輸入學(xué)生學(xué)號(hào): ";
cin>>id;
cout<<"下面請(qǐng)輸入學(xué)生三門課程成績(jī): ";
cout<<endl;
cout<<"請(qǐng)輸入第一門課的成績(jī): ";cin>>score[0];
cout<<"請(qǐng)輸入第二門課的成績(jī): ";cin>>score[1];
cout<<"請(qǐng)輸入第三門課的成績(jī): ";cin>>score[2];
cout<<endl;
student *newstu = new student(name,age,id,score);
student *p = first;
while(p->next != NULL)
{
p = p->next;
}
p->next = newstu;
newstu->next = null;
num++;
}
void studentMessage::Display(void)
{
if(num == 0)
{
cout<<"當(dāng)前記錄中無學(xué)生..."<<endl;
}
else
{
student *p = first->next;
while(p != null)
{
cout<<"姓名:"<<p->name<<" ";
cout<<"年齡:"<<p->age<<" ";
cout<<"學(xué)號(hào):"<<p->id<<" ";
cout<<"三門課程成績(jī): "<<p->score[0]<<" "<<p->score[1]<<" "<<p->score[2]<<" ";
cout<<"總分:"<<p->total<<" ";
cout<<"平均分:"<<p->average<<endl;
p = p->next;
}
}
}
void studentMessage::Delete(void)
{
student *p = first;
student *pre = first;
while(p->next != NULL)
{
pre = p;
p = p->next;
}
pre->next = NULL;
delete p;
num--;
}
void studentMessage::Search(void)
{
int temp = 0;
cout<<"請(qǐng)輸入查找的條件，有如下選項(xiàng)..."<<endl;
cout<<"按照學(xué)號(hào)查找（請(qǐng)輸入【1】） 按照姓名查找（請(qǐng)輸入【2】）"<<endl;
cin>>temp;
switch(temp)
{
case 1: SearchByid(); break;
case 2: SearchByname(); break;
default: cout<<"輸入有誤..."<<endl;
}
}
void studentMessage::SearchByid(void)
{
int _id;
int flag = 0;
cout<<"請(qǐng)輸入待查找學(xué)生的學(xué)號(hào)：";
cin >> _id;
student *p = first->next;
while(p != null)
{
if(p->id == _id)
{
flag = 1;
cout<<"下面是查找匹配結(jié)果："<<endl;
cout<<"姓名:"<<p->name<<" ";
cout<<"年齡:"<<p->age<<" ";
cout<<"學(xué)號(hào):"<<p->id<<" ";
cout<<"三門課程成績(jī): "<<p->score[0]<<" "<<p->score[1]<<" "<<p->score[2]<<" ";
cout<<"總分:"<<p->total<<" ";
cout<<"平均分:"<<p->average<<endl;
}
p = p->next;
}
if(flag == 0)
{
cout<<"抱歉，記錄中沒有查找匹配項(xiàng)..."<<endl;
}
}
void studentMessage::SearchByname(void)
{
string _name;
int flag = 0;
cout<<"請(qǐng)輸入待查找的學(xué)生姓名: ";
cin >> _name;
student *p = first->next;
while(p != null)
{
if(p->name == _name)
{
flag = 1;
cout<<"下面是查找匹配結(jié)果："<<endl;
cout<<"姓名:"<<p->name<<" ";
cout<<"年齡:"<<p->age<<" ";
cout<<"學(xué)號(hào):"<<p->id<<" ";
cout<<"三門課程成績(jī): "<<p->score[0]<<" "<<p->score[1]<<" "<<p->score[2]<<" ";
cout<<"總分:"<<p->total<<" ";
cout<<"平均分:"<<p->average<<endl;
}
p = p->next;
}
if(flag == 0)
{
cout<<"抱歉，記錄中沒有查找匹配項(xiàng)..."<<endl;
}
}
void studentMessage::Change(void)
{
string _name;
int flag = 0,temp;
int _id,_age;
int course = 0;
cout<<"請(qǐng)輸入需要改動(dòng)信息的學(xué)生的姓名: ";
cin >> _name;
student *p = first->next;
while(p != null)
{
if(p->name == _name)
{
flag = 1;
cout<<"該學(xué)生當(dāng)前信息如下："<<endl;
cout<<"姓名:"<<p->name<<" ";
cout<<"年齡:"<<p->age<<" ";
cout<<"學(xué)號(hào):"<<p->id<<" ";
cout<<"三門課程成績(jī): "<<p->score[0]<<" "<<p->score[1]<<" "<<p->score[2]<<" ";
cout<<"總分:"<<p->total<<" ";
cout<<"平均分:"<<p->average<<endl;
cout<<"請(qǐng)指明哪一項(xiàng)需要修改..."<<endl;
cout<<"修改學(xué)號(hào)（輸入【1】） 修改年齡（輸入【2】）修改成績(jī)（輸入【3】）"<<endl;
cin >> temp;
switch(temp)
{
case 1:
{
cout<<"請(qǐng)輸入新的學(xué)號(hào)：";cin>>_id;
p->id = _id;
}
break;
case 2:
{
cout<<"請(qǐng)輸入新的年齡：";cin>>_age;
p->age = _age;
}
break;
case 3:
{
cout<<"請(qǐng)按指示修改課程成績(jī)..."<<endl;
cout<<"是否需要修改第一門課程成績(jī)？（需要輸入【1】不需要輸入【0】）"<<endl;
cin >> course;
if(course == 1)
{
cout<<"請(qǐng)輸入修改后的第一門課的成績(jī)："; cin >> p->score[0];
}
course = 0;
cout<<"是否需要修改第二門課程成績(jī)？（需要輸入【1】不需要輸入【0】）"<<endl;
cin >> course;
if(course == 1)
{
cout<<"請(qǐng)輸入修改后的第二門課的成績(jī)："; cin >> p->score[1];
}
course = 0;
cout<<"是否需要修改第三門課程成績(jī)？（需要輸入【1】不需要輸入【0】）"<<endl;
cin >> course;
if(course == 1)
{
cout<<"請(qǐng)輸入修改后的第三門課的成績(jī)："; cin >> p->score[2];
}
course = 0;
p->total = p->score[0]+p->score[1]+p->score[2];
p->average = p->total/3;
cout<<"修改后的信息如下： "<<endl;
cout<<"姓名:"<<p->name<<" ";
cout<<"年齡:"<<p->age<<" ";
cout<<"學(xué)號(hào):"<<p->id<<" ";
cout<<"三門課程成績(jī): "<<p->score[0]<<" "<<p->score[1]<<" "<<p->score[2]<<" ";
cout<<"總分:"<<p->total<<" ";
cout<<"平均分:"<<p->average<<endl;
}
break;
default: cout<<"輸入有誤..."<<endl;
}
}
p = p->next;
}
if(flag == 0)
cout<<"當(dāng)前記錄中沒有次學(xué)生..."<<endl;
}
/*排序我均采用冒泡排序法，均是從小到大排序*/
//按照科目一排序
void studentMessage::sortByLesson1(void)
{
student *p = first->next;
while(p->next != null)
{
student *q = p->next;
while(q != null)
{
if(p->score[0] > q->score[0])
{
p->swap(q);
}
q = q->next;
}
p = p->next;
}
}
//按照科目二排序
void studentMessage::sortByLesson2(void)
{
student *p = first->next;
while(p->next != null)
{
student *q = p->next;
while(q != null)
{
if(p->score[1] > q->score[1])
{
p->swap(q);
}
q = q->next;
}
p = p->next;
}
}
//按照科目三排序
void studentMessage::sortByLesson3(void)
{
student *p = first->next;
while(p->next != null)
{
student *q = p->next;
while(q != null)
{
if(p->score[2] > q->score[2])
{
p->swap(q);
}
q = q->next;
}
p = p->next;
}
}
//按照總成績(jī)排序
void studentMessage::sortByTotal(void)
{
student *p = first->next;
while(p->next != null)
{
student *q = p->next;
while(q != null)
{
if(p->total > q->total)
{
p->swap(q);
}
q = q->next;
}
p = p->next;
}
}
void studentMessage::clear(void)
{
student *p = first->next;
while(p != null)
{
first->next = p->next;
p->next = null;
delete p;
p = first->next;
}
}
int main()
{
studentMessage stulist;
int ch;
while(ch = stulist.menu())
{
switch(ch)
{
case 1: stulist.Display(); break;
case 2: stulist.Insret(); break;
case 3: stulist.Search(); break;
case 4: stulist.Change(); break;
case 5: stulist.Delete(); break;
case 6: stulist.clear(); break;
default: cout<<"請(qǐng)按要求輸入..."<<endl;
}
}
return 0;
}到此，相信大家對(duì)“用C++實(shí)現(xiàn)學(xué)生成績(jī)管理系統(tǒng)最新版”有了更深的了解，不妨來實(shí)際操作一番吧！這里是億速云網(wǎng)站，更多相關(guān)內(nèi)容可以進(jìn)入相關(guān)頻道進(jìn)行查詢，關(guān)注我們，繼續(xù)學(xué)習(xí)！
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