putc, fputc - write a character to a FORTRAN logical unit
integer*4 function putc (char) character char
integer*4 function fputc (lunit, char) character char
These functions write a character to the file associated with a FORTRAN logical unit, bypassing normal FORTRAN I/O.
putc writes to logical unit 6, which is normally connected to the control terminal output.
The value of each function is zero unless some error occurred, a system error code otherwise. See perror(3F).
libfsu.a