putc, fputc - write a character to a fortran logical unit
integer function putc (char)
integer function fputc (lunit, char)
These funtions write a character to the file associated with a fortran
logical unit bypassing normal fortran I/O. Putc writes to logical unit
6, normally connected to the control terminal output.
The value of each function will be zero unless some error occurred; a
system error code otherwise. See perror(3F).
putc(3S), intro(2), perror(3F)
4th Berkeley Distribution 13 June 1983 PUTC(3F)