Tutorial C# Sharp - Learn to program with performing exercises C# Sharp

Tutorial C# Sharp

Learn to program with performing exercises C# Sharp

Function IsNumber - Tutorial C# Sharp
Tutorial C# Sharp4,85581245

Function IsNumber - Tutorial C# Sharp


Lesson 5:

Functions


Exercise 5.29:

Function IsNumber


Objetive:

Create a function that tells if a string is an intenger number. It should be used like this:

if (IsNumber ("1234"))
System.Console.WriteLine ("It is a numerical value");


Source Code:

 
using System;
public class FunctionIsNumeric
{
    public static bool IsNumber(string text)
    {
        for (int i = 0; i < text.Length; i++)
        if (text[i] < '0') || (text[i] > '9')
            return false;

        return true;
    }


    public static void Main()
    {
        Console.WriteLine( IsNumber("12") );
    }
}
Exercisey 5.29




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