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ass2.java
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import java.util.*;
import javax.lang.model.util.ElementScanner14;
class student{
String rollnum;
String name;
String com1;
String com2;
String op1;
String op2;
String op3;
double markcom1;
double markcom2;
double markop1;
double markop2;
double markop3;
double com1pra;
double pract1,pract2,pract3;
double percent;
}
class list extends student{
public static student insertele(int ind,student arr[])
{
String phy="PHYSICS";
String chem="CHEMISTRY";
String bio="BIOLOGY";
Scanner sc=new Scanner(System.in);
student detail=new student();
enter:
{
System.out.print("Enter roll number of student::");
detail.rollnum=sc.next();
detail.rollnum=detail.rollnum.toUpperCase();
for(int i=0;i<ind;i++)
{
if(detail.rollnum.equals(arr[i].rollnum))
{
System.out.println("Roll number already present please re-enter ");
break enter;
}
}
}
detail.pract1=0;
detail.pract2=0;
detail.pract3=0;
System.out.print("Enter First optional subject (Physics, Chemistry, Math or Biology)::");
detail.op1=sc.next();
System.out.println();
detail.op1=detail.op1.toUpperCase();
optional2:
{
System.out.print("Enter second optional subject (Physics, Chemistry, Math or Biology)::");
detail.op2=sc.next();
System.out.println();
detail.op2=detail.op2.toUpperCase();
// if(detail.op2==detail.op1)
// {
// System.out.println(detail.op2+" is entered before !");
// break optional2;
// }
}
optional3:
{
System.out.print("Enter third optional subject (Physics, Chemistry, Math or Biology)::");
detail.op3=sc.next();
System.out.println();
detail.op3=detail.op3.toUpperCase();
// if(detail.op3==detail.op1||detail.op3==detail.op2)
// {
// System.out.println(detail.op3+" is entered before !");
// break optional3;
// }
}
System.out.print("Enter First compulsory subject (Physical Education or Computer)::");
detail.com1=sc.next();
System.out.println();
detail.com1=detail.com1.toUpperCase();
System.out.println("Second compulsory subject is English");
detail.com2="ENGLISH";
System.out.println();
if(detail.op1.equals("PHYSICS")||detail.op1.equals(chem)||detail.op1.equals(bio))
{
opti1:
{
System.out.print("Enter marks of "+detail.op1+"::");
detail.markop1=sc.nextDouble();
System.out.println();
// if(detail.markop1<0||detail.markop1>70)
// {
// System.out.println("Marks are in out of range please re-enter");
// break opti1;
// }
}
prac1:
{
System.out.print("Enter marks of "+detail.op1+" practical::");
detail.pract1=sc.nextDouble();
// if(detail.pract1<0||detail.pract1>30)
// {
// System.out.println("Marks are in out of range please re-enter");
// break prac1;
// }
}
}
else
{
opti1:
{
System.out.print("Enter marks of "+detail.op1+"::");
detail.markop1=sc.nextDouble();
System.out.println();
// if(detail.markop1<0||detail.markop1>100)
// {
// System.out.println("Marks out of range!");
// break opti1;
// }
}
System.out.print("Enter marks of "+detail.op1+" practical::");
detail.pract2=sc.nextDouble();
}
if(detail.op2.equals("PHYSICS")||detail.op2.equals("CHEMISTRY")||detail.op2.equals("BIOLOGY"))
{
option2:
{
System.out.print("Enter marks of "+detail.op2+"::");
detail.markop2=sc.nextDouble();
System.out.println();
// if(detail.markop2<0||detail.markop2>70)
// {
// System.out.println("Marks are in out of range please re-enter");
// break option2;
// }
}
prac2:
{
System.out.print("Enter marks of "+detail.op2+" practical::");
detail.pract2=sc.nextDouble();
// if(detail.pract2<0||detail.pract2>30)
// {
// System.out.println("Marks are in out of range please re-enter");
// break prac2;
// }
}
}
else
{
opti1:
{
System.out.print("Enter marks of "+detail.op2+"::");
detail.markop2=sc.nextDouble();
System.out.println();
// if(detail.markop2<0||detail.markop2>100)
// {
// System.out.println("Marks are in out of range please re-enter");
// break opti1;
// }
}
}
if(detail.op3.equals("PHYSICS")||detail.op3.equals("CHEMISTRY")||detail.op3.equals("BIOLOGY"))
{
option3:
{
System.out.print("Enter marks of "+detail.op3+"::");
detail.markop3=sc.nextDouble();
System.out.println();
// if(detail.markop3<0||detail.markop3>70)
// {
// System.out.println("Out of range please re-enter");
// break option3;
// }
}
prac3:
{
System.out.print("Enter marks of "+detail.op3+" practical::");
detail.pract3=sc.nextDouble();
// if(detail.pract3<0||detail.pract3>30)
// {
// System.out.println("Marks are in out of range please re-enter");
// break prac3;
// }
}
}
else
{
opti3:
{
System.out.print("Enter marks of "+detail.op3+"::");
detail.markop3=sc.nextDouble();
System.out.println();
// if(detail.markop3<0||detail.markop3>100)
// {
// System.out.println("Marks are in out of range please re-enter");
// break opti3;
// }
}
}
com:
{
System.out.print("Enter marks of "+detail.com1+"::");
detail.markcom1=sc.nextDouble();
System.out.println();
// if(detail.markcom1<0||detail.markcom1>60)
// {
// System.out.println("Marks are in out of range please re-enter");
// break com;
// }
}
compr:
{
System.out.print("Enter marks of "+detail.com1+" practicle ::");
detail.com1pra=sc.nextDouble();
System.out.println();
// if(detail.com1pra<0||detail.com1pra>40)
// {
// System.out.println("Marks are in out of range please re-enter");
// break compr;
// }
}
eng:
{
System.out.println("Enter marks of "+detail.com2+"::");
detail.markcom2=sc.nextDouble();
/*if(detail.markcom2<0||detail.markcom2>100)
{
System.out.println("Marks are in out of range please re-enter");
break eng;
}*/
}
double sum=detail.com1pra+detail.markcom1+detail.markcom2+detail.markop1+detail.markop2+detail.markop3+detail.pract1+detail.pract2+detail.pract3;
detail.percent=sum/5;
return detail;
}
}
class show extends list
{
public static void disper(int ind,student arr[])
{
student dis=new student();
double ma=-1;
for(int i=0;i<=ind;i++)
{
if(arr[i].percent>ma)
{
dis=arr[i];
}
}
System.out.println("ROLL_NO::"+dis.rollnum);
System.out.println("Percentage::"+dis.percent);
System.out.println("Marks in "+dis.op1+"::"+dis.markop1+dis.pract1);
System.out.println("Marks in "+dis.op2+"::"+dis.markop2+dis.pract2);
System.out.println("Marks in "+dis.op3+"::"+dis.markop3+dis.pract3);
System.out.println("Marks in "+dis.com1+"::"+dis.markcom1+dis.com1pra);
System.out.println("Marks in "+dis.com2+"::"+dis.markcom2);
System.out.print("Grade is::");
if(dis.percent>=80.00)
{
System.out.println("Honours");
}
else if(dis.percent>=60)
{
System.out.println("First Div");
}
else if(dis.percent>=48)
{
System.out.println("Second Div");
}
else if(dis.percent>=40)
{
System.out.println("Third Div");
}
else
{
System.out.println("Fail");
}
}
public static void disrol(int ind,student arr[])
{
student dis=arr[ind];
double ma=-1;
for(int i=0;i<=ind;i++)
{
System.out.println("ROLL_NO::"+dis.rollnum);
System.out.println("Percentage::"+dis.percent);
System.out.println("Marks in "+dis.op1+"::"+dis.markop1+dis.pract1);
System.out.println("Marks in "+dis.op2+"::"+dis.markop2+dis.pract2);
System.out.println("Marks in "+dis.op3+"::"+dis.markop3+dis.pract3);
System.out.println("Marks in "+dis.com1+"::"+dis.markcom1+dis.com1pra);
System.out.println("Marks in "+dis.com2+"::"+dis.markcom2);
System.out.print("Grade is::");
if(dis.percent>=80.00)
{
System.out.println("Honours");
}
else if(dis.percent>=60)
{
System.out.println("First Div");
}
else if(dis.percent>=48)
{
System.out.println("Second Div");
}
else if(dis.percent>=40)
{
System.out.println("Third Div");
}
else
{
System.out.println("Fail");
}
}
}
}
public class ass2 extends student {
public static void main(String args[])
{
student arr[];
arr=new student[100];
int ind;
ind=-1;
int choice;
Scanner sc=new Scanner(System.in);
do
{
System.out.println("\n\t\tMENU\n");
System.out.println("Press 1 to enter student record");
System.out.println("Press 2 to display details of student with highest percentage");
System.out.println("Press 3 to display a record of student on the basis of Roll number");
System.out.println("Press 4 to exit");
choice=sc.nextInt();
switch(choice)
{
case 1:
{
arr[++ind]=list.insertele(ind,arr);
break;
}
case 2:
{
show.disper(ind,arr);
break;
}
case 3:
{
System.out.print("Enter roll number ::");
String roll=sc.next();
System.out.println();
boolean flag=false;
for(int i=0;i<=ind;i++)
{
if(roll.equals(arr[i].rollnum))
{
show.disrol(i,arr);
flag=true;
break;
}
}
if(!flag)
{
System.out.println("No such roll number present in data");
}
break;
}
case 4:
{
System.out.println("Exiting...");
break;
}
default:
{
System.out.println("Wrong value entered!");
}
}
}while(choice!=4);
}
}