What is the purpose of header files in C language?

Header files in C contain declarations for functions, macros, constants, and variables that are used across multiple source files. They help in separating the interface of a program from its implementation. By including header files using the #include directive, programmers can ensure that the necessary declarations are available in each file that uses the functions or variables defined in those header files. This allows for modular code, reusability, and easier maintenance.

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. Show memory hierarchy with the help of a diagram.
  11. Write an algorithm to print the multiplication table of a number in reverse order.
  12. Convert the algorithms of questions 4 to 9 into flowcharts.
  13. What is the role of loops in programming?
  14. Differentiate between sequence, selection, and iteration in programming.
  15. Why is problem analysis important in programming?
  16. How does an algorithm help in efficient problem-solving?
  17. Explain the importance of using flowcharts before writing a program.
  18. Explain the differences between an algorithm and a flowchart with examples.
  19. Write an algorithm to check whether a given number is even or odd.
  20. Write an algorithm to find the greatest number among three given numbers.