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Start your free trialAshim Aryal
3,162 PointsC#
Add input validation to your program by printing “You must enter a whole number.” if the user enters a decimal or something that isn’t a number. Hint: Catch the FormatException.
using System;
namespace Treehouse.CodeChallenges
{
class Program
{
static void Main()
{
Console.Write("Enter the number of times to print \"Yay!\": ");
string x = Console.ReadLine();
bool keepgoing = true;
while (keepgoing)
{
try
{
int y = int.Parse(x);
if(y <= 0)
{
Console.WriteLine("You must enter a whole number.");
continue;
}
while(y > 0)
{
Console.WriteLine("Yay");
y--;
}
keepgoing = false;
}
catch (FormatException)
{
Console.Write("You must enter a whole number.");
continue;
}
}
}
}
}
2 Answers
Raffael Dettling
32,999 PointsGot it for you. Your catch methode should test if it´s a hole number so you don´t need the first if statment in 2/3. In 3/3 you need the if statment to check if the input is negativ Hope it helps :)
using System;
namespace Treehouse.CodeChallenges
{
class Program
{
static void Main()
{
Console.Write("Enter the number of times to print \"Yay!\": ");
try
{
int input = int.Parse(Console.ReadLine());
if(input > 0)
{
for(int i = 0; i < input; i++)
{
Console.Write("Yay!");
}
}
else
{
Console.WriteLine("You must enter a positive number.");
}
}
catch(FormatException)
{
Console.WriteLine("You must enter a whole number.");
}
}
}
}
Raffael Dettling
32,999 PointsYou forgot the ! at YAY :D Took me a moment ^^
Ashim Aryal
3,162 PointsI changed the code, it still dint work though :(
Allan Clark
10,810 Pointswhat is the error you are getting?
Ashim Aryal
3,162 PointsAshim Aryal
3,162 PointsThank you so much, :)