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35 lines
531 B
C
35 lines
531 B
C
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/*
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* fputc.c
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*
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* Ullrich von Bassewitz, 02.06.1998
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*/
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#include <stdio.h>
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#include <fcntl.h>
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#include "_file.h"
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int fputc (int c, FILE* f)
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{
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/* Check if the file is open or if there is an error condition */
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if ((f->f_flags & _FOPEN) == 0 || (f->f_flags & (_FERROR | _FEOF)) != 0) {
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return -1;
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}
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/* Write the byte (knows about byte order!) */
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if (write (f->f_fd, &c, 1) <= 0) {
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/* Error */
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f->f_flags |= _FERROR;
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return -1;
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}
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/* Return the byte written */
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return c & 0xFF;
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}
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