gets, fgets - get a string from a stream
#include <stdio.h>
gets() reads characters from the standard input stream stdin, into the array pointed to by s, until a newline character is read or an end-of-file condition is encountered. The newline character is discarded and the string is terminated with a null character.
fgets() reads characters from the stream into the array pointed to by s, until n - 1 characters are read, or a newline character is read and transferred to s, or an end-of-file condition is encountered. The string is then terminated with a null character.
When using gets() , , if the length of an input line exceeds the size of s, indeterminate behavior may result. For this reason, it is strongly recommended that gets() be avoided in favor of fgets() . .
If end-of-file is encountered and no characters have been read, no characters are transferred to s and a null pointer is returned. If a read error occurs, such as trying to use these functions on a file that has not been opened for reading, a null pointer is returned and the error indicator for the stream is set. If end-of-file is encountered, the EOF indicator for the stream is set. Otherwise s is returned.
lseek(), read(), ferror(), fopen(), fread(), getc(), scanf(), ungetc()