whitespace in the format string (scanf)

by

Whitespace in the format string matches 0 or more whitespace characters in the input.

So "%d c %d" expects number, then any amount of whitespace characters, then character c, then any amount of whitespace characters and another number at the end.

"%dc%d" expects number, c, number.

Also note, that if you use * in the format string, it suppresses assignment:
%*c = read 1 character, but don’t assign it to any variable

So you can use "%d%*c c%*c %d" if you want to force user to enter: number, at least 1 character followed by any amount of whitespace characters, c, at least 1 character followed by any amount of whitespace characters again and number.

More Related Contents:

  1. Reading string from input with space character? [duplicate]
  2. ‘ ‘, ‘\n’ , scanf() and output screen
  3. How do you allow spaces to be entered using scanf?
  4. Disadvantages of scanf
  5. Reading a line using scanf() not good?
  6. What will happen if ‘&’ is not put in a ‘scanf’ statement?
  7. read comma-separated input with `scanf()`
  8. Input in C. Scanf before gets. Problem
  9. How can I scan strings with spaces in them using scanf()? [duplicate]
  10. Wrong format specifiers in scanf (or) printf
  11. How do you type something on the same line of text in C [closed]
  12. Why does scanf ask twice for input when there’s a newline at the end of the format string?
  13. C: Multiple scanf’s, when I enter in a value for one scanf it skips the second scanf [duplicate]
  14. When should I use ampersand with scanf()
  15. Code for printf function in C [duplicate]
  16. Does scanf() take ‘\n’ as input leftover from previous scanf()?
  17. difference between %ms and %s scanf
  18. Reading a single character in C
  19. How can you flush a write using a file descriptor?
  20. Max string length using scanf -> ANSI C
  21. Program doesn’t execute gets() after scanf(), even using fflush(stdin)
  22. Why is adding a leading space in a scanf format string recommended?
  23. If statements not working?
  24. While-loop ignores scanf the second time
  25. Using scanf and fgets in the same program?
  26. SegFault after scanf?
  27. C command-line password input
  28. Why does this code print two times? [duplicate]
  29. Why doesn’t pressing enter return ‘\n’ to getch()?
  30. Difference between scanf() and fgets()

Leave a Comment