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Start your free trialAnkit Biswas
280 PointsTry Catch and if else
Add more input validation to the program by printing "You must enter a positive number." if the user enters a negative number.
Add an if/else conditional statement just after parsing the user's provided input to an integer Write a conditional expression to ensure that the remainder of the code in the try block is only executed if the user provides a non-negative number If the user enters a negative number, output to the console the message "You must enter a positive number." I do the program but hot this error I entered 2.5. I expected "You must enter a whole number.", but got "You must enter a positive number." instead. I have to do both so please help me with that.
using System;
namespace Treehouse.CodeChallenges
{
class Program
{
static void Main()
{
Console.Write("Enter the number of times to print \"Yay!\": ");
string input = Console.ReadLine();
try
{
int count = int.Parse(input);
if (count > 0)
{
int i = 0;
while (i < count)
{
i += 1;
Console.WriteLine("Yay!");
Console.ReadKey();
}
}
}
catch (FormatException)
{
Console.WriteLine("You must enter a positive number.");
}
}
}
}
1 Answer
Steven Parker
231,236 PointsThe "try" and "catch" are for detecting if something other than a whole number is entered (causing the "Parse" to fail). That code should be left as it was after the first task.
The detection of a negative number can be done with an "if" (or "if/else") conditional.