Student details using classes and object

Student details using classes and object

Aim:
  To write a C++ program to display the student details using classes and object as array.
Algorithm:
Step 1: Create a class as student.
Step 2: Declare the data members rollno, name, mark1, mark2, mark3, total and  
            average.
Step 3: Declare the member functions as getdata() and displaydata().
3.1 getdata() method used to get the  student details.
3.2 displaydata() method used to display the student details.
Step 4: In the main, create an object array for the student class using the following    
            syntax:
Classname objectname[size];
Step 5: Get the number of students.
Step 6: In getdata() method, get the student details using for loop.
Step 7: In displaydata() method, display the student details using for loop.
Step 8: Use the following syntax to call the member functions from the main
Objectname.methodname();
Program:
#include<iostream.h>
#include<conio.h>
#include<iomanip.h>
class student
 {
  int rno;
  char name[20];
  int m1,m2,m3,t;
  float avg;
  public:
    void getdata();
    void displaydata();
 };
 void student :: getdata()
  {
      cout<<"Enter the roll no:";
      cin>>rno;
      cout<<"Enter the name:";
      cin>>name;
      cout<<"Enter the mark 1:";
      cin>>m1;
      cout<<"Enter the mark 2:";
      cin>>m2;
      cout<<"Enter the mark 3:";
      cin>>m3;
      t=m1+m2+m3;     avg=t/3;
   }
 void student :: displaydata()
  {
      cout<<setw(4)<<rno;
      cout<<setw(10)<<name;
      cout<<setw(6)<<m1<<setw(8)<<m2<<setw(8)<<m3;
      cout<<setw(6)<<t<<setw(7);
      cout<<avg<<endl;
   }
  void main()
   {
    student a[10];
    clrscr();
      int n;
      cout<<"Enter the range of the student\n";
      cin>>n;
      for(int i=0;i<n;i++)
      {
        a[i].getdata();
      }
    cout<<"\n\n";
    cout<<"**************************************************"<<endl;
    cout<<"\t"<<"       Student Details: "<<endl;
  cout<<"**************************************************"<<endl;
   cout<<setw(5)<<"Rollno"<<setw(8)<<"Name"<<setw(8)<<"Mark1"<<setw(8)<<"Mark2"<<setw(8)<<"Mark3"<<setw(6)<<"Total"<<setw(6)<<"Avg"<<"\n";
    for(int j=0;j<n;j++)
    {
      a[j].displaydata();
      }
 getch();
}


Output :

Enter the range of the student 2
Enter the roll no:1
Enter the name:mary
Enter the mark 1:89
Enter the mark 2:89
Enter the mark 3:78
Enter the roll no:2
Enter the name:jim
Enter the mark 1:67
Enter the mark 2:78
Enter the mark 3:89
Enter the roll no:2
Enter the name:jack
Enter the mark 1:78
Enter the mark 2:89
Enter the mark 3:67

**************************************************
                            Student Details:
**************************************************
Rollno    Name   Mark1   Mark2   Mark3 Total   Avg
   1          mary    89          89          78        256     85
   2          jim       67          78          89        234     78
   3   jack   78     89       67       234     78