1.C Programming Language

Basics:
Variable Declaration, Definition and Scope:
Data Types:
Storage Classes:
Input/Output:
Operators:
Preprocessor:
Arrays & Strings:
2.Guide to Flowchart Symbols, from Basic to Advanced

The Oval. An End or a Beginning. The oval, or terminator, is used to represent the start and end of a process. ...
The Rectangle. A Step in the Flowcharting Process. The rectangle is your go-to symbol once you've started flowcharting. ...
The Arrow. Indicate Directional Flow. ...
The Diamond. Indicate a Decision.