Intro to C

C exucutes through 6 phases:

• Editor - programming writing code
• Preprocess - preprocessor processes the code
• Compile - compiler created object code and stores it on the disk
• Link - Linker links the object code with the libraries and creates an executable file
• Load - Loader puts program in memory ( RAM )
• Execute - CPU takes each instructon and executes it, storing new data values as the program executes.

Formatting C code with printf:

printf("Integer value is %10.2f", x);
// 10 to add space to the left, -10 to add space to the right 
// .2f to format to 2decimal places

Data Types

• char ( string is array of chars )
• int
• unsigned int ( always positive )
• double
• float