Write a character to a stream.

This function is compatible with the following targets:

ANSI

BeOS

EMB/RTOS

Mac OS

Palm OS

Win32

#include <stdio.h>

int fputc(int c, FILE *stream);

Parameters for this facility are:

c	int	The character to write to a file
stream	FILE *	A pointer to a FILE stream

The fputc() function writes the character c to stream and advances stream's file position indicator. Although the c argument is an int, it is converted to a char before being written to stream. fputc() is written as a function, not as a macro.

If the file is opened in update mode (+) the file cannot be written to and then read from unless the write operation and read operation are separated by an operation that flushes the stream's buffer. This can be done with the fflush() function or one of the file positioning operations (fseek(), fsetpos(), or rewind()).

fputc() returns the character written if it is successful, and returns EOF if it fails.

"Wide Character and Byte Character Stream Orientation"

"putc"

"putchar"

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
	FILE *f;
	int letter;
	
	// create a new file for output
	if (( f = fopen("foofoo", "w")) == NULL) { 
		printf("Can't create file.\n");
		exit(1);
	}

	// output the alphabet to the file one letter
	// at a time
	for (letter = 'A'; letter <= 'Z'; letter++)
		fputc(letter, f);
	fclose(f);

	return 0;
}