Code to hide

14y1.5kVisual Basic .NET

Console window of this program shows following output:

Enter 3 price values
10
$10.00
20
$20.00
30
$30.00

I wish to know whether is there any code to hide entered value and only showing its $ value (for example to hide 10, 20 and 30)

using System;

namespace _6e9
{
class Program
{
static void Main(string[] args)
{
double p;
int x;

double[] price = new double[3];

Console.WriteLine("Enter 3 price values");

for (x = 0; x < price.Length; ++x)
{
price[x] = new double();
p = Convert.ToDouble(Console.ReadLine());
Console.WriteLine(p.ToString("C"));

}
Console.ReadKey();
}
}
}

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

14y ago
Thank you for your help.
Vulpes14y ago
OK, try this:

using System;
using System.Text;

namespace _6e9
{
class Program
{
static void Main(string[] args)
{
double p;
int x;

double[] price = new double[3]; // all elements set to zero by default

Console.WriteLine("Enter 3 price values");

for (x = 0; x < price.Length; ++x)
{
price[x] = new double(); // no need for this line
p = Convert.ToDouble(GetHiddenInput());
Console.WriteLine(p.ToString("C"));
Console.WriteLine();
}

Console.ReadKey();
}

static string GetHiddenInput()
{
StringBuilder sb = new StringBuilder();
while(true)
{
ConsoleKeyInfo cki = Console.ReadKey(true);
char c = cki.KeyChar;
if (c >= '0' && c <= '9')
{
sb.Append(c);
}
else if (c == '.' && !sb.ToString().Contains("."))
{
sb.Append(c);
}
else if (c == (char)8 && sb.Length > 0) // backspace
{
sb.Length--;
}
else if (c == (char)13) // enter key
{
return sb.ToString();
}
}
}
}
}
14y ago
What I am requesting is Console window of this program should display as follows:

Enter 3 price values
$10.00

$20.00

$30.00

You can see entered values have been hidden console window only displaying its $ value.
Vulpes14y ago
I'm not entirely sure what you mean but the following adjustment will only show the currency symbol, not the number itself:

using System;

namespace _6e9
{
class Program
{
static void Main(string[] args)
{
double p;
int x;

double[] price = new double[3]; // all elements set to zero by default

Console.WriteLine("Enter 3 price values");

for (x = 0; x < price.Length; ++x)
{
price[x] = new double(); // no need for this line
p = Convert.ToDouble(Console.ReadLine());
Console.WriteLine(p.ToString("C")[0]); // shows only first character
}

Console.ReadKey();
}
}
}