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Quest: page 8

Experiment to find out what happens whe printf's argument string contains \c, where c is some character not listed above.

explanation:

try out all escape sequences there are here is a list of useful escape sequences:
- \a -> audible or visual alert (if supported by terminal)
- \n -> newline
  - add a newline
- \b -> backspace
  - delete one char back useful when we want to delete some fixed chars
- \f -> form feed
  - It skips to the start of the next page. (Applies mostly to terminals where the output device is a printer rather than a VDU.)
- \r -> carriage return
  - move back the cursor the the start of the line and overwrite text. useful when loading something and display loading progress for instance.
- \t -> horizontal tab
  - move the value one tab to the right
- \v -> vertical tab
  - move the value one tab to the bottom and right (vertical)
- \ -> add a backslash
- \' -> add a single quote
- \" -> add a double quote
- \? -> question mark
- \ooo -> octal number
- \xhh -> hex number
- \0 -> NULL character
  - this is used to find the end of something usually

all escape sequences
#include <stdio.h>
#include <stdlib.h>

int main() {
  // audible
  printf("Audible or visual alert. \a\n");
  // newline
  printf("HELLO \n");
  // backspace
  printf("HELLO\b backspace \n");
  // form feed
  printf("\fForm feed. \f\n");
  // carriage return observe output
  printf("printed-1.");
  printf("\rprinted-2.");
  printf("\n");
  // horizontal tab sequence
  printf("val1\tval2\n");
  // vertical tab sequence
  printf("val1\vval2\vval3\n");
  // backslash
  printf("slash\\slash\n");
  // single and double quote
  printf("\'single quote\' \"double quote\"\n");
  // question mark
  printf("\? \n");
  // octal 112 = decimal 74 = ascii char J
  printf("\112\n");
  // hex 4a = 74 = decimal 74 = ascii char J
  printf("\x4a \n");
  return EXIT_SUCCESS;
}

output
Audible or visual alert.
HELLO
HELL backspace

Form feed.

printed-2.
val1    val2
val1
    val2
        val3
slash\slash
'single quote' "double quote"
?
J
J

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Quest: page 8​

Quest: page 8