Try Catch and throw exceptions

Wesley Corrick

I've got a homework assignment that requires me to use three objects and and if the midterms or final exam grades are less than 0 or greater than 100 its supposed to throw and Argument Exception for not being between 0 and 100. When I run my code I have otwo of the three objects are set to be invalid and the first one is supposed to be true. when its ran the code will only print my first object and the second one that throws the exception and will not print the third one in any form unless the second object is true.

4 Replies

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

Amit Mohanty7y ago
Hey try attached source code.
Amit Mohanty7y ago
Hey use multiple try catch block instead of one.
using System;

class StudentGradeDemo
{
    static void Main(string[] args)
    {
        try
        {
            ReportCard r1 = new ReportCard("Steve Rogers", 55, 66);
            Console.WriteLine(r1);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
        try
        {
            Console.WriteLine("--------------------");
            ReportCard r2 = new ReportCard("Tony Stark", 68, 101);
            Console.WriteLine(r2);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
        try
        {
            Console.WriteLine("--------------------");
            ReportCard r3 = new ReportCard("Donald Trump", 100, 99);
            Console.WriteLine(r3);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
        Console.ReadLine();
    }
}
Or you can use loop to call ReportCard.
Wesley Corrick7y ago
Wouldn't that cause an unneeded redundancy? Here is how the assignment has to be. Write, compile, and test a console application named StudentGradeDemo that attempts to create several (at least three) valid and invalid ReportCard objects. Immediately after each instantiation attempt, handle any thrown exceptions by displaying the report card name and error message. Create a ReportCard class with four fields; a student name, a numeric midterm grade, a numeric final exam grade, and a letter grade. The ReportCard constructor requires values for the name and two numeric grades, then determines the letter grade. Upon construction, throw an ArgumentException if the midterm or final exam grade is less that 0, or more than 100. The letter grade is based on the average of the midterm and final grades. Use a scale of 90-100 = A, 80-89 = B, and so on.. If the instantiation is successful, display all data.
Rajanikant Hawaldar7y ago
Use try catch for each object, Don't throw exception just set flag1=true at catch block

so it prints all your objects then you can check flag=true then throw exception