File processing

The following types of files can be processed with the input/output functions of the C runtime system:

• BS2000 system files SYSDTA, SYSOUT and SYSLST

• cataloged disk files with access methods SAM, ISAM and PAM

• temporary PAM files (INCORE).

In C-BS2000 a distinction is made between binary files and text files on the one hand and between stream and record-oriented input/output on the other (see also section “Basicterms”).

The following table shows the possible combinations in which the various file types can be processed:

	Text file Stream I/O	Binary file Stream I/O	Binary file Record I/O
System files	X
INCORE		X
SAM	X	X	X
ISAM	X		X
PAM		X	X

Up to 2048 files (including stdin, stdout and stderr) can be open at the same time.