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Ankit 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 isn’t 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
231,275 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.