Differentiate between printf() and scanf() functions.

printf() is used to display output to the screen, whereas scanf() is used to take input from the user. printf() formats and outputs data, while scanf() reads and stores data from the user into variables.
Example:

int num;
scanf("%d", &num); // User input is stored in 'num'
printf("You entered: %d", num); // Output the value of 'num'

Related Questions:

  1. Why is a format specifier used? Explain with examples.
  2. Why is an escape sequence used? Explain with examples.
  3. What is the purpose of the printf() function? Explain with an example.
  4. Evaluate the following expressions:
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  6. Write four characteristics of HLLs.
  7. Define Integrated Development Environment (IDE).
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  9. Which of the following are valid C variables? Give the reason if not a valid variable.
  10. What are reserved words? Why should they not be used as variable names?
  11. Why are comments used in programs?
  12. What is the purpose of header files in C language?
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  15. What are the rules for specifying a variable name in C language?
  16. What is a preprocessor directive? Explain #include preprocessor directive in detail.
  17. What is a pointer in C?
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  19. What are the different types of storage classes in C?
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