C – stdio.h library functions

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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:

Function

Description

printf() This function is used to print the character, string, float, integer, octal and hexadecimal values onto the output screen
scanf() This function is used to read a character, string, numeric data from keyboard.
getc() It reads character from file
gets() It reads line from keyboard
getchar() It reads character from keyboard
puts() It writes line to o/p screen
putchar() It writes a character to screen
clearerr() This function clears the error indicators
f open() All file handling functions are defined in stdio.h header file
f close() closes an opened file
getw() reads an integer from file
putw() writes an integer to file
f getc() reads a character from file
putc() writes a character to file
f putc() writes a character to file
f gets() reads string from a file, one line at a time
f puts() writes string to a file
f eof() finds end of file
f getchar reads a character from keyboard
f getc() reads a character from file
f printf() writes formatted data to a file
f scanf() reads formatted data from a file
f getchar reads a character from keyboard
f putchar writes a character from keyboard
f seek() moves file pointer position to given location
SEEK_SET moves file pointer position to the beginning of the file
SEEK_CUR moves file pointer position to given location
SEEK_END moves file pointer position to the end of file.
f tell() gives current position of file pointer
rewind() moves file pointer position to the beginning of the file
putc() writes a character to file
sprint() writes formatted output to string
sscanf() Reads formatted input from a string
remove() deletes a file
fflush() flushes a file

Source code for stdio.h header file:

Please find below the source code for stdio.h header file. This code is taken from DevC++ compiler files for your reference.

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