C

1. Algorithm Vs Program
2. High level, Low level Languages with Key Tools: Compiler, Assembler, Linker and Loader
3. Source Code, Assembly Code, Object Code, Machine Code
4. Importance of C Language: Structure and Execution Process 
5. C Language: Character set and Tokens
6. Data Type and Classification of Data Types
7. Declaration of Variables and Assigning Values to Variables 
8. Operator in C
9. Bitwise Operator
10. Expression in C, Type Conversions and Preprocessor Directives 
11. Header Files in C – stdio.h, conio.h, string.h
12. getchar(), putchar(), scanf(), printf()