Table of Contents
Is fgets safe in C?
fgets is safe to use in comparison to gets since it checks for character array str bounds. gets keeps on reading characters from the users, until a newline character is encountered.
What is the use of fgets in C?
Description. The fgets() function reads characters from the current stream position up to and including the first new-line character (\n), up to the end of the stream, or until the number of characters read is equal to n-1, whichever comes first.
Does fgets move the file pointer?
2 Answers. after using fgets(a,5,fp1) does the file pointer move 5 positions ahead? The pointer fp1 is not affected by the fgets call (or any other stdio I/O routine); The FILE object that fp1 points to will be updated to reflect the new file position, but the pointer itself does not change.
What is the difference between fgets() and scanf() in C++?
fgets () can read from any open file, but scanf () only reads standard input. fgets () reads ‘a line of text’ from a file; scanf () can be used for that but also handles conversions from string to built in numeric types. Many people will use fgets () to read a line of data and then use sscanf () to dissect it.
What are the problems with scanf in C++?
One of the other problems with scanf is its behavior in case of overflow. For example, when reading an int: the above cannot be used safely in case of an overflow. Even for the first case, reading a string is much more simpler to do with fgets rather than with scanf.
When is it appropriate to use fscanf instead of sscanf?
When a data file has a known format, on the other hand, it may be appropriate to read it with fscanf. It’s perfectly appropriate to parse strings with sscanf (as long as the return value is checked), because it’s so easy to regain control, restart the scan, discard the input if it didn’t match, etc.
What is filefgets in Linux?
fgets function is short for file-get-string. Remember that files can be pretty much anything on *nix systems (sockets, streams, or actual files), so we can use it to read from standard input, which again, is also technically a file.