Open and Write to Files (Obsolete)

ropen()

Syntax:

ropen("infile")

ropen()

Description:

Ropen() opens infile for reading. A subsequent ropen() with no arguments closes the previously opened infile. A file which is re-opened with ropen(infile) positions the stream at the beginning of the file.

Example:

proc r() {
   ropen("file.dat")
   for (i=0; i<ndat; i=i+1) {
      x[i] = fscan()  y[i]=fscan()
   }
   ropen()
}

Diagnostics:: This function returns 0 if the file is not successfully opened.

See also

read, fscan(), getstr(), File

Warning

There is no way to open more than one read file at a time. The same is true for write files.

wopen()

Syntax:

wopen("outfile)

wopen()

Description:

Wopen is similar to ropen but opens a file for writing. Contents of an already existing outfile are destroyed. Wopened files are written to with fprint(). With no argument, the previously wopened file is closed. Wopen returns 0 on failure to open a file.

Example:

proc w() {
   wopen("file.dat")
   for (i=0; i<ndat; i=i+1) {
      fprint("%g %g\n", x[i], y[i])
   }
   wopen()
}