| if statement has the same syntax as in C, C++, and Java. Thus, it is written in the following form:
- if-statement ::= "
if" "(" condition ")" if-body ["else" else-body]
- condition ::= boolean-expression
- if-body ::= statement-or-statement-block
- else-body ::= statement-or-statement-block
The if statement evaluates its condition expression to determine whether to execute the if-body. Optionally, an else clause can immediately follow the if body, providing code to execute when the condition is false. Making the else-body another if statement creates the common cascade of if, else if, else if, else if, else statements:
using System;
public class IfStatementSample
{
public void IfMyNumberIs()
{
int myNumber = 5;
if ( myNumber == 4 )
Console.WriteLine("This will not be shown because myNumber is not 4.");
else if( myNumber < 0 )
{
Console.WriteLine("This will not be shown because myNumber is not negative.");
}
else if( myNumber % 2 == 0 )
Console.WriteLine("This will not be shown because myNumber is not even.");
else
{
Console.WriteLine("myNumber does not match the coded conditions, so this sentence will be shown!");
}
}
}
All text is available under the terms of the GNU Free Documentation License
Source : Wikibooks |
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