Hakerrank's 30 days of code in C language

Hi! Those are my solutions to HackerRank's 30 days of code challenge

day	challenge	solution
0	Hello, World.	Day0HelloWorld.c
1	Data Types	Day1DataTypes.c
2	Operators	Day2Operators.c
3	Intro to Conditional Statements	Day3Intro to Conditional Statements.c
4	class-vs-instance	Day4Class-vs-Instance.cpp
5	Loops	Day5Loops.c
6	Let's Review	Day6Let'sReview.cpp
7	Arrays	Day7Array.cpp
8	Dictionaries and Maps	Day8Dictionaries and Maps.cpp
9	Recusion3	Day9Recusion3.c
10	Binary numbers	Day10BinaryNumbers.c
11	2D arrays	Day11-2DArrays.c
12	Inheritance	Day12Inheritance
13	Abstract Classes	Day13AbstractClasses.cpp
14	Scope	Day14Scope.cpp

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