Challenge solutions

Here are some example solution to programs in c code.

Intro to c:

• programming basics
• basic output
• basic input
• errors and warnings

 

Variables / assignments:

• variables(int)
• assignments
• arithmetic expressions int
• floating point numbers
• scientific notation for floating point literals
• constant variables
• using math functions
• integer division and modulo
• type conversions
• characters
• strings
• random numbers

Branches:

• if-else
• more if-else
• equality and relational operators
• detecting ranges with if else statements
• multiple if-else branches
• logical operators
• switch statements
• boolean data type
• string comparisons
• string access operations
• character operations
• conditional expressions
• floating-point comparison

Loops:

• while loops
• more while loops
• for loops
• do-while loops
• nested loops
• break and continue

Arrays:

• arrays
• iterating through arrays
• multiple arrays
• two-dimensional arrays

User defined functions:

• user defined functions basics
• return
• functions common errors

Structs:

• grouping data: structs

Input/output:

• outputting formatting

Pointers:

• why pointers pass by pointer example
• pass by pointer
• pointer basics
• the malloc and free functions
• pointers by structs
• a first link list

Recursion:

• recursive functions
• creating a recursive function
• recursive math functions