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Xcode

admin — Wed, 25 Apr 2012 00:18:22 +0000

The Xcode environment can be divided into three main sections:

Navigation Area (Left side)
Editor Area (Middle)
Utility Area (Right side)

Decision Making

admin — Sat, 21 Apr 2012 21:32:32 +0000

if-else statements
switch statements
conditional operator

Compound conditional testing (&& and ||)

Looping

admin — Sat, 21 Apr 2012 21:24:55 +0000

Types of looping are:

for statements

for (initial_expression; loop_condition; loop_expression)
{statement/statements}

while statements

initial_condition
while (condition)
{statement/statements}

do statements

do
{statement/statements}
while (condition)

Data types and expressions

admin — Sat, 21 Apr 2012 19:06:47 +0000

The basic data types and format options are:

int

octal: 050, #x0
hexadecimal: 0xFFFFFF, %#x
qualifiers – long, long long, sort, unsigned, signed

float

scientific notation: 1.9e-10, %f %e %g

double

same as float, more decimal space

char

Objects

admin — Sat, 21 Apr 2012 18:20:28 +0000

In Objective C, object usage is generally broken down into 3 parts:

Class interface section

method, arguement and data type declarations

Class implementation section

method definitions

Program object initialization and management

actual usage and runtime behavior