Examples: CL programs and procedures

These sample programs demonstrate the flexibility, simplicity, and versatility of CL programs.

The following programs are described by their function and probable user.

Note: Code generated by the ILE CL compiler in V4R3 and later releases is threadsafe. However, many commands are not threadsafe. Therefore, do not consider a CL procedure as threadsafe unless all the commands the CL procedure uses are threadsafe. You can use the Display Command (DSPCMD) command to determine if a command is threadsafe. In addition, information (online help and command documentation) for each command indicates whether the command is threadsafe.

Example: Initial program for setup (programmer)
In this example, the test library is placed first on the library list, an output queue is selected for a convenient printer, and the programmer menu is displayed.
Example: Save specific objects in an application (system operator)
This example program ensures consistent command entry for regularly repeated procedures.
Example: Recovery from abnormal end (system operator)
In this example, the system operator recovers from an abnormal end.
Example: Time out while waiting for input from a device display
This program illustrates how to write a CL program using a display file that will wait for a specified amount of time for the user to enter an option. If he does not, the user is signed off.
Example: Perform date arithmetic
This program illustrates how to write a CL program that adds or subtracts a given number of days for the current system date.

Parent topic: CL programming

Related information

Multithreaded Applications