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C# C# Objects Inheritance Catching Exceptions

Posted by Vedang Patel
Vedang Patel
7,114 Points

I tried but don't know what to do

Here's how I wrote the code. Now wrap the testing logic with a try/catch and write the message "Value is out of bounds!" to the console if the exception is caught.

Program.cs 
int value = int.Parse(Console.ReadLine());

if (value < 0 || value > 20)
{
    throw new System.Exception();
}

Console.WriteLine(string.Format("You entered {0}",value));

4 Answers

Damien Watson
Damien Watson
27,419 Points

Hi Vedang, You just need to wrap a 'try' around the items you want to check. The exception gets thrown and the try fails if the the value is < 0 and > 20.

The catch is then executed, writing the line 'out of bounds'.

int value = int.Parse(Console.ReadLine());

try {
    if (value < 0 || value > 20) {
        throw new System.Exception();
    }
    Console.WriteLine(string.Format("You entered {0}",value));
}
catch(Exception e) {
    Console.WriteLine("Value is out of bounds!");   
}
Vedang Patel
Vedang Patel
7,114 Points

thank you Damien Watson

Tim Washum
Tim Washum
14,215 Points

Did you mean to put the ''e" in catch(Exception e) ? I put it without the "e" and it passed.

Helmuts Reinis
Helmuts Reinis
1,021 Points
Helmuts Reinis
Helmuts Reinis
1,021 Points 
int value = int.Parse(Console.ReadLine());
try
{
    if (value < 0 || value > 20)
    {    
        throw new System.Exception();
    }

}
catch(Exception)
{
    Console.WriteLine("Value is out of bounds!");
}
Console.WriteLine(string.Format("You entered {0}", value));


Here you go!
OMKAR POOJARI
OMKAR POOJARI
6,352 Points
OMKAR POOJARI
OMKAR POOJARI
6,352 Points

in catch why did we add e with the exception is it a variable to store the error message

Quanhu LEE
Quanhu LEE
665 Points
Quanhu LEE
Quanhu LEE
665 Points

int value = int.Parse(Console.ReadLine());

try { if (value < 0 || value > 20) { throw new System.Exception(); } } catch(Exception) { Console.WriteLine("Value is out of bounds!");
} Console.WriteLine(string.Format("You entered {0}",value));