What are reserved words? Why should they not be used as variable names?

Reserved words (also called keywords) are predefined words in programming languages that have a special meaning and are used for specific programming constructs, such as control flow, data types, or operations. Examples include if, for, int, and return in C. These words are reserved by the language and cannot be used as variable names because they would conflict with the language’s syntax, causing ambiguity or errors during compilation or interpretation.

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. Show memory hierarchy with the help of a diagram.
  9. Write an algorithm to find the sum of the given sequence. SUM = 20 + 25 + 30 + 35 + 40 + 45 + 50 + 55 + 60
  10. Write an algorithm to find the product of the given numbers. PRODUCT = 1 × 3 × 5 × 7 × 9 × 11 × 13 × 15
  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.