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Start your free trialMichael Hampshire
12,206 PointsCan someone explain to me why my program wouldn't catch the exception?
I'm on the final code challenge for C# and I followed along no problem with the class. When I got to the end though I was having problems with the code compiling. I don't know if it was just the work spaces or what but I write all my code in Visual Studio and then just copy and paste it in.
But my main problem is that I can't get the program to catch my exception. It catches it after it crashes, but won't in the program. I can type in how every many "Yays" I want and it prints them and ends the program, but won't throw an exception when I input something besides an Int. Here is my code:
class Program {
static void Main(string[] args)
{
var looped = 0;
Console.Write("Enter the number of times to print \"Yay!\": ");
var entry = Console.ReadLine();
var times = int.Parse(entry);
while (looped < times)
{
try
{
Console.WriteLine("Yay!");
looped += 1;
continue;
}
catch (FormatException)
{
Console.WriteLine("You must enter a whole number.");
continue;
}
}
Console.ReadLine();
}
}
}
P.S: I left out the namespace part at the top, as well as the using system.
1 Answer
Steven Parker
231,271 PointsYour structure is not quite correct. The purpose of the try and catch is to validate that the input is a number, so for it to do that the try block must enclose the line where you call int.Parse (and not be inside the loop). Some other things to keep in mind are:
- Your program must ask for and accept input ONE TIME ONLY (so only one Readline)
- If the input validates, your program will perform exactly as in Task 1
- If the input does not validate, it will print the error message and exit
- since the parsing will be inside the try, the times variable must be declared separately from the assignment