This print for content only-size & color not accurate 7" X 9-1/4" / casebound / malloy

C# Equality/Relational 

Operator

Example Usage

Meaning in Life

==

if(age == 30)

Returns true only if each expression is the

same

!=

if("Foo" != myStr)

Returns true only if each expression is different

<

if(bonus < 2000)

Returns true if expression A is less than, 

>

if(bonus > 2000)

greater than, less than or equal to, or greater 

<=

if(bonus <= 2000)

than or equal to expression B

>=

if(bonus >= 2000)

C H A P T E R   3  

■

C O R E   C #   P R O G R A M M I N G   C O N S T R U C T S, PA RT   I

102

8849CH03.qxd  9/24/07  11:07 AM  Page 102

---

Again, C and C++ programmers need to be aware that the old tricks of testing a condition for a

value “not equal to zero” will not work in C#. Let’s say you want to see whether the string you are

working with is longer than zero characters. You may be tempted to write

static void ExecuteIfElse()

{