#include <stdio.h>

char *fgets(char *s, int size, FILE *stream);

Defination :-

fgets() reads in at most one less than size characters from stream and stores them into the buffer pointed to by s.  Reading  stops  after an EOF or a newline.  If a newline is read, it is stored into the buffer.  A terminating null byte (”) is stored after the last charac?
ter in the buffer.
Use :-

It is used to scan a string with spaces until a new line character or EOF character is inserted.

It takes input until enter is pressed.

It is used in place of scanf();