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学籍管理系统C++源代码
2023-07-05 12:33:51 深夜i     --     --
学籍管理系统 C++源代码 学生信息管理 教师信息管理 数据库设计

学籍管理系统是一款可以方便管理学生信息的软件，包括学生的基本信息、学业信息、考试成绩等，能够实现对学生信息的查看、修改、添加、删除等操作。下面是学籍管理系统的C++源代码：



#include<iostream>


#include<fstream>


#include<cstring>


#include<iomanip>


#include<conio.h>


using namespace std;


class student


{


  int roll_no;


  char name[50];


  int maths,eng,science,total;


  float per;


  char grade;


  void calculate()


  {


    total=maths+eng+science;


    per=total/3.0;


    if(per>=60)


      grade='A';


    else if(per>=50&&per<60)


      grade='B';


    else if(per>=33&&per<50)


      grade='C';


    else


      grade='F';


  }


public:


  void getdata()


  {


    cout<<"\nEnter the Roll number of student: ";


    cin>>roll_no;


    cout<<"\nEnter the Name of student : ";


    cin.ignore();


    cin.getline(name,50);


    cout<<"\nEnter the marks in Maths out of 100 : ";


    cin>>maths;


    cout<<"\nEnter the marks in English out of 100 : ";


    cin>>eng;


    cout<<"\nEnter the marks in Science out of 100 : ";


    cin>>science;


    calculate();


  }


  void showdata()


  {


    cout<<"\nRoll number of student : "<<roll_no;


    cout<<"\nName of student : "<<name;


    cout<<"\nMarks in Maths : "<<maths;


    cout<<"\nMarks in English : "<<eng;


    cout<<"\nMarks in Science : "<<science;


    cout<<"\nTotal Marks : "<<total;


    cout<<"\nPercentage : "<<setprecision(2)<<per;


    cout<<"\nGrade : "<<grade;


  }


  int retrollno()


  


    return roll_no;


  


};


fstream fp;


student st;


void write_student()


{


  fp.open("student.dat",ios::binary|ios::app);


  st.getdata();


  fp.write((char*)&st,sizeof(student));


  fp.close();


  cout<<"\n\nStudent record Has Been Created ";


  getch();


}


void display_all()


{


  cout<<"\n\n\n\t\tDISPLAY ALL RECORD !!!\n\n";


  fp.open("student.dat",ios::binary);


  while(fp.read((char*)&st,sizeof(student)))


  {


    st.showdata();


    cout<<"\n\n====================================\n";


  }


  fp.close();


  getch();


}


void display_sp(int n)


{


  int flag=0;


  fp.open("student.dat",ios::binary);


  while(fp.read((char*)&st,sizeof(student)))


  {


    if(st.retrollno()==n)


    {


      st.showdata();


      flag=1;


    }


  }


  fp.close();


  if(flag==0)


    cout<<"\n\nrecord not exist";


  getch();


}


void modify_student()


{


  int no,found=0;


  cout<<"\n\n\tTo Modify ";


  cout<<"\n\n\tPlease Enter The roll number of student";


  cin>>no;


  fp.open("student.dat",ios::binary|ios::in|ios::out);


  while(fp.read((char*)&st,sizeof(student))&&found==0)


  {


    if(st.retrollno()==no)


    {


      st.showdata();


      cout<<"\n\nPlease Enter The New Details of student"<<endl;


      st.getdata();


      int pos=(-1)*sizeof(st);


      fp.seekp(pos,ios::cur);


      fp.write((char*)&st,sizeof(student));


      cout<<"\n\n\t Record Updated";


      found=1;


    }


  }


  fp.close();


  if(found==0)


    cout<<"\n\n Record Not Found ";


  getch();


}


void delete_student()


{


  int no;


  cout<<"\n\n\n\tDelete Record";


  cout<<"\n\nPlease Enter The roll number of student You Want To Delete: ";


  cin>>no;


  fp.open("student.dat",ios::binary);


  fstream fp2;


  fp2.open("Temp.dat",ios::out|ios::binary);


  fp.seekg(0,ios::beg);


  while(fp.read((char*)&st,sizeof(student)))


  {


    if(st.retrollno()!=no)


      fp2.write((char*)&st,sizeof(student));


  }


  fp2.close();


  fp.close();


  remove("student.dat");


  rename("Temp.dat","student.dat");


  cout<<"\n\n\tRecord Deleted ..";


  getch();


}


void menu()


{


  int option;


  do


  {


    cout<<"\n\n\n\t\t\t\tSTUDENT REPORT CARD SYSTEM\n\n";


    cout<<"\t\t\t\t1. CREATE STUDENT RECORD";


    cout<<"\n\t\t\t\t2. DISPLAY ALL STUDENTS RECORDS";


    cout<<"\n\t\t\t\t3. SEARCH STUDENT RECORD ";


    cout<<"\n\t\t\t\t4. MODIFY STUDENT RECORD";


    cout<<"\n\t\t\t\t5. DELETE STUDENT RECORD";


    cout<<"\n\t\t\t\t6. EXIT";


    cout<<"\n\n\t\t\t\tEnter Your Option (1-6): ";


    cin>>option;


    switch(option)


    {


      case 1: write_student(); break;


      case 2: display_all(); break;


      case 3:


        int num;


        cout<<"\n\n\tPlease Enter The roll number: ";


        cin>>num;


        display_sp(num);


        break;


      case 4: modify_student(); break;


      case 5: delete_student(); break;


      case 6: exit(0); break;


      default: cout<<"\a";


    }


  }while(option!=6);


}


int main()


{


  menu();


  return 0;


}

以上是学籍管理系统的源代码，通过这段代码可以看到，该系统主要由一些类和函数组成，其中 `student` 类被用来表示学生的信息，包括姓名、学号、各科成绩、总分、百分比和等级。其他函数包括：添加学生数据、显示所有学生数据、查询学生数据、修改学生数据以及删除学生记录。通过这些函数，用户可以方便地管理学生信息。

  
  

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