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Start your free trialTojo Alex
Courses Plus Student 13,331 Pointsi'm not really sure what to put in the if statement
Its asking me these 3 things : 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." I don't know what to put in the if statement if you want the user to enter positive numbers only
using System;
namespace Treehouse.CodeChallenges
{
class Program
{
static void Main()
{
try{
Console.Write("Enter the number of times to print \"Yay!\": ");
string input = Console.ReadLine();
int count = int.Parse(input);
if (input )
{
}else{
}
int i = 0;
while(i < count)
{
i += 1;
Console.WriteLine("Yay!");
}
} catch(FormatException e) {
Console.WriteLine("You must enter a whole number.");
}
}
}
}
4 Answers
Steven Parker
231,210 PointsHere's a few hints:
- it might be hard to test the string ("input)", but testing the number ("count") should be easier
- negative numbers are less than 0 ("
< 0
") - if the number is negative you will issue the message
- you don't need to worry about "else" since the loop won't start
Allan Clark
10,810 PointsInstead of 'input' (a string) use the parsed int 'count'. count > 0
Tojo Alex
Courses Plus Student 13,331 Pointsthanks both
Allan Clark
10,810 Pointshappens to the best of us :)
for future reference to tell if a number is even/odd you would need to use the modulo operator (%). this gives the remainder portion of simple division. for example:
count % 2 == 0 if this evaluates to true the number is even if not its odd.
Tojo Alex
Courses Plus Student 13,331 Pointsok thank you for advice
Tojo Alex
Courses Plus Student 13,331 PointsTojo Alex
Courses Plus Student 13,331 Pointsoh i thought it said odd numbers silly me
Steven Parker
231,210 PointsSteven Parker
231,210 PointsPerhaps you were thinking of a different challenge.