Project assistance ?

Hie guys

Here just need to develop a program to store student's grades for professors in department. Shown below is the console application (The run) of the program, you must re create the program Exactly as its shown here:

You must follow the these insturctions:

1. Use classes to store all this information. Here, you will need only one class to store a student it will have the following:

Public String FirstName

Public String LastName

Public Double [ ] Grades

2. You are required to store the list of students in an array. To do so, define a student array in your Program class as such:

Students [ ] students = null;

3. Make sure the program prompt the user for input. You may use if, else or switch statments.

4. Implement help, create Roster and add respectively. For "add" you will need to have a count variable.

5. Implement print using a "for loop" and your count variable to print all students.

6. In this project, valid input is always guaranteed for each step.

Lost here! Thanks a lot for you help in advance!!

Out put should looks like this : http://s14.postimg.org/5gjoq9qup/Screen_Shot_2013_11_12_at_3_28_35_AM.png

Try this:

using System;

class Student

{

public string FirstName;

public string LastName;

public double[] Grades;

public Student(string firstName, string lastName, int maxGrades)

{

FirstName = firstName;

LastName = lastName;

Grades = new double[maxGrades];

}

public override string ToString()

{

return String.Format("{0} {1} has {2} grades", FirstName, LastName, Grades.Length);

}

class Program

{

static Student[] students = null;

static int count = 0;

static void Main()

{

string command = null;

string[] items = null;

while(true)

{

Console.Write("Command : ");

command = Console.ReadLine().ToLower();

if (command == "help")

{

Help();

}

else if (command.StartsWith("add "))

{

items = command.Split(' ');

int maxGrades = int.Parse(items[3]);

Add(items[1], items[2], maxGrades);

}

else if (command.StartsWith("createroster "))

{

items = command.Split(' ');

int count = int.Parse(items[1]);

CreateRoster(count);

}

else if (command == "print")

{

Print();

}

else if (command == "quit")

{

return;

}

else

{

Console.WriteLine("Sorry not a valid command");

}

Console.WriteLine();

}

static void Help()

{

Console.WriteLine();

Console.WriteLine("The following is a list of the commands\n");

Console.WriteLine("add");

Console.WriteLine(" - adds a user to the roster with maxGrades entries");

Console.WriteLine("createRoster");

Console.WriteLine(" - creates a grade roster to hold count students");

Console.WriteLine("print");

Console.WriteLine(" - prints the grade roster");

Console.WriteLine("quit");

Console.WriteLine(" - terminates program");

Console.WriteLine();

}

static void Add(string firstName, string lastName, int maxGrades)

{

if(students == null)

{

Console.WriteLine("YOU MUST CREATE A ROSTER FIRST!");

}

else if (count < students.Length)

{

students[count] = new Student(firstName, lastName, maxGrades);

count++;

Console.WriteLine(firstName + " " + lastName + " added to the roster");

}

else

{

Console.WriteLine("ROSTER IS FULL!");

}

static void CreateRoster(int count)

{

if (students == null)

{

students = new Student[count];

Console.WriteLine("Roster to hold " + count + " students created");

}

else

{

Console.WriteLine("ROSTER HAS ALREADY BEEN CREATED!");

}

static void Print()

{

for(int i = 0; i < count; i++)

{

Console.WriteLine(students[i]);

}

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Vulpes13y ago
Accepted answer
Try this:

using System;

class Student
{
public string FirstName;
public string LastName;
public double[] Grades;

public Student(string firstName, string lastName, int maxGrades)
{
FirstName = firstName;
LastName = lastName;
Grades = new double[maxGrades];
}

public override string ToString()
{
return String.Format("{0} {1} has {2} grades", FirstName, LastName, Grades.Length);
}
}

class Program
{
static Student[] students = null;
static int count = 0;

static void Main()
{
string command = null;
string[] items = null;

while(true)
{
Console.Write("Command : ");
command = Console.ReadLine().ToLower();

if (command == "help")
{
Help();
}
else if (command.StartsWith("add "))
{
items = command.Split(' ');
int maxGrades = int.Parse(items[3]);
Add(items[1], items[2], maxGrades);
}
else if (command.StartsWith("createroster "))
{
items = command.Split(' ');
int count = int.Parse(items[1]);
CreateRoster(count);
}
else if (command == "print")
{
Print();
}
else if (command == "quit")
{
return;
}
else
{
Console.WriteLine("Sorry not a valid command");
}

Console.WriteLine();
}

}

static void Help()
{
Console.WriteLine();
Console.WriteLine("The following is a list of the commands\n");
Console.WriteLine("add");
Console.WriteLine(" - adds a user to the roster with maxGrades entries");
Console.WriteLine("createRoster");
Console.WriteLine(" - creates a grade roster to hold count students");
Console.WriteLine("print");
Console.WriteLine(" - prints the grade roster");
Console.WriteLine("quit");
Console.WriteLine(" - terminates program");
Console.WriteLine();
}

static void Add(string firstName, string lastName, int maxGrades)
{
if(students == null)
{
Console.WriteLine("YOU MUST CREATE A ROSTER FIRST!");
}
else if (count < students.Length)
{
students[count] = new Student(firstName, lastName, maxGrades);
count++;
Console.WriteLine(firstName + " " + lastName + " added to the roster");
}
else
{
Console.WriteLine("ROSTER IS FULL!");
}
}

static void CreateRoster(int count)
{
if (students == null)
{
students = new Student[count];
Console.WriteLine("Roster to hold " + count + " students created");
}
else
{
Console.WriteLine("ROSTER HAS ALREADY BEEN CREATED!");
}
}

static void Print()
{
for(int i = 0; i < count; i++)
{
Console.WriteLine(students[i]);
}
}
}