If Statement in C Sharp
by Dinesh[ Edit ] 2012-07-22 20:39:38
If Statement in C#
One of the single most important statements in every programming language is the if statement. Being able to set up conditional blocks of code is a fundamental principal of writing software.
In C#, the if statement is very simple to use.he if statement needs a boolean result, that is, true or false. In some programming languages, several datatypes can be automatically converted into booleans, but in C#, specifically make the result boolean.
Example Program:
using System;
class IfSelect
{
public static void Main()
{
string myInput;
int myInt;
Console.Write("Please enter a number: ");
myInput = Console.ReadLine();
myInt = Int32.Parse(myInput);
// Single Decision and Action with braces
if (myInt > 0)
{
Console.WriteLine("Your number {0} is greater than zero.", myInt);
}
// Single Decision and Action without brackets
if (myInt < 0)
Console.WriteLine("Your number {0} is less than zero.", myInt);
// Either/Or Decision
if (myInt != 0)
{
Console.WriteLine("Your number {0} is not equal to zero.", myInt);
}
else
{
Console.WriteLine("Your number {0} is equal to zero.", myInt);
}
// Multiple Case Decision
if (myInt < 0 || myInt == 0)
{
Console.WriteLine("Your number {0} is less than or equal to zero.", myInt);
}
else if (myInt > 0 && myInt <= 10)
{
Console.WriteLine("Your number {0} is in the range from 1 to 10.", myInt);
}
else if (myInt > 10 && myInt <= 20)
{
Console.WriteLine("Your number {0} is in the range from 11 to 20.", myInt);
}
else if (myInt > 20 && myInt <= 30)
{
Console.WriteLine("Your number {0} is in the range from 21 to 30.", myInt);
}
else
{
Console.WriteLine("Your number {0} is greater than 30.", myInt);
}
}
}
