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Start your free trialAnkit Biswas
280 PointsI can't understand the logic of this program please help me to under stand it.
Add input validation to the below program by printing "You must enter a whole number." if the user enters a decimal or something that isnβt a number.
Wrap all of the code contained in the Main method in a try/catch block The catch block should catch FormatException exceptions Inside of the catch block, output to the console the message "You must enter a whole number."
How it get printed many times under the loop and why we use i+=1 ?
using System;
namespace Treehouse.CodeChallenges
{
class Program
{
static void Main()
{
Console.Write("Enter the number of times to print \"Yay!\": ");
string input = Console.ReadLine();
int count = int.Parse(input);
if(count > 0)
{
try
{
int i = 0;
while(i < count)
{
i += 1;
Console.WriteLine("Yay!");
}
}
}
else
{
Console.WriteLine("You must enter a positive number.");
}
catch(FormatException exception)
{
Console.WriteLine("You must enter a whole number.");
}
}
}
}
1 Answer
Steven Parker
231,236 PointsYou have some syntax errors. Please see my answer to your previous question where I describe them in detail.
And the code "i += 1
" is using the addition assignment operator to increase the value of "i" by 1. This way, "i" always has a count of the number of times the message has been printed. When it gets larger the the "count" that was asked for, the loop stops.