CPS 6L.2 Ramm - Fall 2001 - 9/5/01 #5

3. Program Design and Implementation

if Statement

    if (logical expression)
    {
       statement list
    }

if/else Statement

    if (logical expression)
    {
       statement list
    }  
    else
    {
       statement list
    }

Logical Expressions often use
Relational Operators:

== equal to
> greater than
< less than
!= not equal to
>= greater than or equal to
<= less than or equal to
if/else Examples:
- sort3.cpp
Assignment Statement: variable = expression;
- Pronounce gets rather than equals
Value of Relational Operations
true = 1
false = 0
Logical Operators

|| Or
&& And
! Not
Short Circuit Evaluation exhaust4.cpp
C++ Operator Precedence

! NOT
*, /, % mult, div, mod
+, - add, subt
<<, >> insert, extract
<, <=, >, >= LT, LE, GT, GE
==, != EQ, NE
&& AND
|| OR
=, +=, -=, *=, /=, %= assignment
When in doubt, parenthesize