C – stdio.h library functions

All C inbuilt functions which are declared in stdio.h header file are given below. The source code for stdio.h header file is also given below for your reference.

List of inbuilt C functions in stdio.h file:

S.no	Function	Description
1	printf()	This function is used to print the character, string, float, integer, octal and hexadecimal values onto the output screen
2	scanf()	This function is used to read a character, string, numeric data from keyboard.
3	getc()	It reads character from file
4	gets()	It reads line from keyboard
5	getchar()	It reads character from keyboard
6	puts()	It writes line to o/p screen
7	putchar()	It writes a character to screen
8	clearerr()	This function clears the error indicators
9	f open()	All file handling functions are defined in stdio.h header file
10	f close()	closes an opened file
11	getw()	reads an integer from file
12	putw()	writes an integer to file
13	f getc()	reads a character from file
14	putc()	writes a character to file
15	f putc()	writes a character to file
16	f gets()	reads string from a file, one line at a time
17	f puts()	writes string to a file
18	f eof()	finds end of file
19	f getchar	reads a character from keyboard
20	f getc()	reads a character from file
21	f printf()	writes formatted data to a file
22	f scanf()	reads formatted data from a file
23	f getchar	reads a character from keyboard
24	f putchar	writes a character from keyboard
25	f seek()	moves file pointer position to given location
26	SEEK_SET	moves file pointer position to the beginning of the file
27	SEEK_CUR	moves file pointer position to given location
28	SEEK_END	moves file pointer position to the end of file.
29	f tell()	gives current position of file pointer
30	rewind()	moves file pointer position to the beginning of the file
31	putc()	writes a character to file
32	sprint()	writes formatted output to string
33	sscanf()	Reads formatted input from a string
34	remove()	deletes a file
35	fflush()	flushes a file