HelenOS sources
fputc 794 uspace/lib/c/generic/io/io.c return fputc(c, stdout);
fputc 111 uspace/lib/c/include/stdio.h extern int fputc(int, FILE *);
fputc 116 uspace/lib/c/include/stdio.h return fputc(i, f);
fputc 111 uspace/lib/posix/include/libc/stdio.h extern int fputc(int, FILE *);
fputc 116 uspace/lib/posix/include/libc/stdio.h return fputc(i, f);
fputc 615 uspace/lib/sif/src/sif.c if (fputc('"', f) == EOF)
fputc 627 uspace/lib/sif/src/sif.c if (fputc(*cp, f) == EOF)
fputc 634 uspace/lib/sif/src/sif.c if (fputc('"', f) == EOF)
fputc 864 uspace/lib/sif/src/sif.c if (fputc('=', f) == EOF)
fputc 886 uspace/lib/sif/src/sif.c if (fputc('<', f) == EOF)
fputc 897 uspace/lib/sif/src/sif.c if (fputc(' ', f) == EOF)
HelenOS homepage, sources at GitHub