Objective-C

Objective-C is a thin layer on top of C, and is a "strict superset" of C, meaning that it is possible to compile any C program with an Objective-C compiler, and to freely include C language code within an Objective-C class. Objective-C derives its object syntax from Smalltalk. All of the syntax for non-object-oriented operations (including primitive variables, pre-processing, expressions, function declarations, and function calls) is identical to that of C, while the syntax for object-oriented features is an implementation of Smalltalk-style messaging.

• Hello World
• Bob
• Difference Of Squares
• Gigasecond
• Leap
• Reverse String
• Space Age
• Sum Of Multiples
• Two Fer
• Etl
• Flatten Array
• Grade School
• Hamming
• Isogram
• Nucleotide Count
• Prime Factors
• Raindrops
• Rna Transcription
• Atbash Cipher
• Clock
• Collatz Conjecture
• Grains
• Perfect Numbers
• Phone Number
• Robot Name
• Scrabble Score
• Secret Handshake
• Series
• Sieve
• Strain
• Sublist
• Triangle
• Acronym
• All Your Base
• Allergies
• Anagram
• Beer Song
• Binary Search
• Crypto Square
• Largest Series Product
• Meetup
• Nth Prime
• Pangram
• Pascals Triangle
• Say
• Transpose
• Word Count
• Matching Brackets
• Luhn
• Roman Numerals
• Run Length Encoding