How To Fetch Non Printable Characters in C
Understanding Non-Printable Characters
When working with strings in C, you may encounter non-printable characters that are not visible on the screen. These characters can be problematic if not handled properly, leading to unexpected behavior or errors in your program. In this article, we will explore how to fetch non-printable characters in C.
Non-printable characters are ASCII characters with values between 0 and 31, as well as 127. These characters are not meant to be printed and are often used for control purposes, such as newline (\n), tab (\t), or bell (\a). To fetch these characters, you can use the getchar() function in C, which reads a single character from the standard input.
Fetching Non-Printable Characters in C
To understand how to fetch non-printable characters, it's essential to know how they are represented in C. Non-printable characters can be represented using escape sequences, such as \n for newline or \t for tab. You can also use the ASCII value of the character to represent it. For example, the ASCII value of the bell character is 7, so you can represent it as \x07.
To fetch non-printable characters in C, you can use the getchar() function in combination with a loop to read multiple characters. You can also use the scanf() function with the %c format specifier to read a single character. When fetching non-printable characters, it's crucial to check the return value of the function to ensure that the character was read successfully. By following these techniques, you can effectively fetch non-printable characters in C and handle them according to your program's requirements.