Using Automatic properties & Generics

14y1.8kVisual Basic .NET

This is modification of an original program having get and set method. Modified program Using Automatic properties and Generics. Please anyone help me to correct the errors. Comment out block shows how must be the output look like.

using System;

namespace ConsoleApplication1
{
class StudetCompare
{
static void Main(string[] args)
{
int x;

Student[] student = new Student[3];

for (x = 0; x < student.Length; ++x)
{
Console.Write("Student #{0} ID = ", x + 1);
int id = Convert.ToInt32(Console.ReadLine());
student[x].ID = id;

Console.Write("Name: ");
string name = Console.ReadLine();
student[x].Name = name;

Console.Write("GPA = ");
double gpa = Convert.ToDouble(Console.ReadLine());
student[x].GPA = gpa;

Console.WriteLine();
}
Console.WriteLine("Student #{0} ID = {1}, Name: {2}, GPA = {3}", student[x].ID, student[x].Name, student[x].GPA);

Console.ReadKey();
}
}
class Student : IComparable
{
public int ID { get; set; }
public string Name { get; set; }
public double GPA { get; set; }

public int CompareTo(Student student)
{
int returnVal;

if (this.ID > student.ID)
returnVal = 1;
if (this.ID < student.ID)
returnVal = -1;
else
returnVal = 0;

return returnVal;
}
}
}
/*
Student #1 ID = 200
Name: Maha
GPA = 2.9

Student #2 ID = 300
Name: Cad
GPA = 3.5

Student #3 ID = 100
Name: Tef
GPA = 4.6

Student #1 ID = 100, Name: Tef, GPA = 4.6
Student #2 ID = 200, Name: Maha, GPA = 2.9
Student #3 ID = 300, Name: Cad, GPA = 3.5
*/

3 Replies

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Vulpes14y ago
Accepted answer
Try this - I've highlighted the corrections:

using System;

namespace ConsoleApplication1
{
class StudetCompare
{
static void Main(string[] args)
{
int x;

Student[] student = new Student[3];

for (x = 0; x < student.Length; ++x)
{
student[x] = new Student();
Console.Write("Student #{0} ID = ", x + 1);
int id = Convert.ToInt32(Console.ReadLine());
student[x].ID = id;

Console.Write("Name: ");
string name = Console.ReadLine();
student[x].Name = name;

Console.Write("GPA = ");
double gpa = Convert.ToDouble(Console.ReadLine());
student[x].GPA = gpa;

Console.WriteLine();
}

Array.Sort(student);

for (x = 0; x < student.Length; ++x)
{
Console.WriteLine("Student #{0} ID = {1}, Name: {2}, GPA = {3}", x + 1, student[x].ID, student[x].Name, student[x].GPA);
}

Console.ReadKey();
}
}

class Student : IComparable
{
public int ID { get; set; }
public string Name { get; set; }
public double GPA { get; set; }

public int CompareTo(Student student)
{
int returnVal;

if (this.ID > student.ID)
returnVal = 1;
else if (this.ID < student.ID)
returnVal = -1;
else
returnVal = 0;

return returnVal;
}
}
}
14y ago
Thank you very much for your help Vulpes.
Suthish Nair14y ago
What error you getting