C#. How to count digits entered from input?

Question

This is a code which multiplies numbers, user enters.

string x;
double t, s = 1;

Console.WriteLine("Enter some numbers: ");
Console.WriteLine("To finish, press Enter");
while ((x = Console.ReadLine()) != "")
{
    t = Convert.ToDouble(x);
    s *= t;
}
Console.WriteLine("The result is: {0}", s);
Console.ReadLine();

It shows the result at the end, but how to make it show a total count of numbers entered? For example: I enter 1, 2 and 3. So total count is 3.

score 2 · Accepted Answer · answered Sep 10 '15 at 04:56

string x;
double t, s = 1;
int count = 0;

Console.WriteLine("Enter some numbers: ");
Console.WriteLine("To finish, press Enter");
while ((x = Console.ReadLine()) != "")
{
    t = Convert.ToDouble(x);
    s *= t;
    count++;
}
Console.WriteLine("The result is: {0}", s);
Console.WriteLine("The count is: {0}", count);
Console.ReadLine();

Sharihin · Answer 2 · 2015-09-10T05:21:42.407

It is good to use TryParse to avoid FormatException
Char.IsDigit returns true is current char is digit (obviously)

Example:

string x;   
double t, s = 1;    
int digitCount = 0;
Console.WriteLine("Enter some numbers: ");
Console.WriteLine("To finish, press Enter");
while ((x = Console.ReadLine()) != "")
{
    if (!Double.TryParse(x, out t))
        continue;
    foreach (var c in x)
        if (Char.IsDigit(c))
            digitCount++;
    s *= t;
}   
Console.WriteLine("The result is: {0}", s);  
Console.WriteLine("The count of digits is: {0}", digitCount);    
Console.ReadLine();

score 1 · Answer 3 · answered Sep 10 '15 at 04:58

1

Why not a variable for counter?

    Console.WriteLine("Enter some numbers: ");
    Console.WriteLine("To finish, press Enter");
    int i=0;
    while ((x = Console.ReadLine()) != "")
    {
        i++;
        t = Convert.ToDouble(x);
        s *= t;
    }
    Console.WriteLine("The result is: {0}", s);
    Console.ReadLine();

answered Sep 10 '15 at 04:58

behtgod

251
3
15

why don't you print the value of the counter? – sujith karivelil Sep 10 '15 at 04:59
Aha! The point is the variable. And I just thought everyone knows that should print the counter if want to watch it. – behtgod Sep 10 '15 at 05:11

score 1 · Answer 4 · answered Sep 10 '15 at 04:58

1

You have to count the loop iteration for that use a counter variable:

int loopCounter=0;
while ((x = Console.ReadLine()) != "")
{
    t = Convert.ToDouble(x);
    s *= t;
    loopCounter++;
}
Console.WriteLine("The count is: {0}", loopCounter);

answered Sep 10 '15 at 04:58

sujith karivelil

28,671
6
55
88

score 0 · Answer 5 · answered Sep 10 '15 at 05:02

0

You could try counting the number of characters in the string input (x). int temp=x.Length();

answered Sep 10 '15 at 05:02

Girish Karunakaran

1

C#. How to count digits entered from input?

5 Answers5