User I/O & Variables
Data types, variables & constants
"if" conditional statement & more on "scanf"
More about "if" conditional statement
Even more about "if" statement
"Switch-Case" conditional statement
Ternary and mod operators
Introduction to arrays
For loops & more about arrays
More about for loops
Matrices
Even more loops...
Modular programming - Functions and Procedures
Functions and variables' scope
Prototypes
Pointers and memory handling
Strings