What are the different types of storage classes in C?

In C, storage classes define the scope, lifetime, and visibility of variables. The main types are:

  • auto: Default for local variables, their scope is limited to the block in which they are declared.
  • register: Used for variables that should be stored in a register rather than RAM for faster access.
  • static: Preserves the value of a variable between function calls and limits its scope to the block it is declared in.
  • extern: Used to declare a variable defined in another file or outside the current function or block.

Related Questions:

  1. Define computer program.
  2. Differentiate between syntax and semantic.
  3. Write three differences between assembly language and HLLs.
  4. Write four characteristics of HLLs.
  5. Define Integrated Development Environment (IDE).
  6. Differentiate between constant and variable.
  7. Which of the following are valid C variables? Give the reason if not a valid variable.
  8. What are reserved words? Why should they not be used as variable names?
  9. Why are comments used in programs?
  10. What is the purpose of header files in C language?
  11. What is a pointer in C?
  12. Explain the difference between a while loop and a do-while loop.
  13. How does a switch statement work in C?
  14. What is the difference between = and == operators in C?
  15. What is dynamic memory allocation in C? Explain malloc(), calloc(), and free() functions with examples.
  16. Describe the following High-Level Languages:
  17. What is C language IDE? Explain its modules in detail.
  18. What are the rules for specifying a variable name in C language?
  19. What is a preprocessor directive? Explain #include preprocessor directive in detail.
  20. Explain different types of loops in C with examples.