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- /*
- * C M D 3
- *
- * Get a command from the user and take the requested action.
- * This version demonstrates the use of an infinite loop.
- */
-
- main()
- {
- int key;
-
- /*
- * Loop until the user types the command to quit.
- */
- printf("Press ? for help.\n");
- while (1) {
- /*
- * Get a command from the user.
- */
- printf("Command: ");
- key = getch(); /* console input */
-
- /*
- * Analyze and act on the command.
- */
- switch (key) {
- case 'q':
- case 'Q':
- puts("Done.");
- return (0);
- case 'h':
- case 'H':
- case '?':
- puts("CMD3 understands these commands:");
- puts("h or H or ?: help frame");
- puts("m or M: message");
- puts("q or Q: quit");
- break;
- case 'm':
- case 'M':
- puts("Here's the message.");
- puts("Pretty disappointing, huh!");
- break;
- default:
- printf("Unknown command -- %c\n", key);
- break;
- }
- }
- }
-