1 files changed, 103 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/OR_PRACTICAL_C/12_8.c b/reference/C/CONTRIB/OR_PRACTICAL_C/12_8.c
new file mode 100644
index 0000000..500683b
--- /dev/null
+++ b/reference/C/CONTRIB/OR_PRACTICAL_C/12_8.c
@@ -0,0 +1,103 @@
+/********************************************************
+ * print -- format files for printing                   *
+ ********************************************************/
+#include <stdio.h>
+#include <stdlib.h>      /* ANSI Standard only */
+
+int verbose = 0;         /* verbose mode (default = false) */
+char *out_file = "print.out";   /* output filename */
+char *program_name;      /* name of the program (for errors) */
+int line_max = 66;       /* number of lines per page */
+
+main(int argc, char *argv[])
+{
+    void do_file(char *); /* print a file */
+    void usage(void);     /* tell user how to use the program */
+
+    /* save the program name for future use */
+    program_name = argv[0];
+
+    /* 
+     * loop for each option.  
+     *   Stop if we run out of arguments
+     *   or we get an argument without a dash.
+     */
+    while ((argc > 1) && (argv[1][0] == '-')) {
+        /*
+         * argv[1][1] is the actual option character.
+         */
+        switch (argv[1][1]) {
+            /*
+             * -v verbose 
+             */
+            case 'v':
+                verbose = 1; 
+                break;
+            /*
+             * -o<name>  output file
+             *    [0] is the dash
+             *    [1] is the "o"
+             *    [2] starts the name
+             */
+            case 'o':
+                out_file = &argv[1][2];
+                break;
+            /*
+             * -l<number> set max number of lines
+             */
+            case 'l':
+                line_max = atoi(&argv[1][2]);
+                break;
+            default:
+                (void)fprintf(stderr,"Bad option %s\n", argv[1]);
+                usage();
+        }
+        /*
+         * move the argument list up one
+         * move the count down one
+         */
+        argv++;
+        argc--;
+    }
+
+    /*
+     * At this point all the options have been processed.
+     * Check to see if we have no files in the list
+     * and if so, we need to process just standard in.
+     */
+    if (argc == 1) {
+        do_file("print.in");
+    } else {
+        while (argc > 1) {
+          do_file(argv[1]);
+          argv++;
+          argc--;
+        }
+    }
+    return (0);
+}
+/********************************************************
+ * do_file -- dummy routine to handle a file            *
+ *                                                      *
+ * Parameter                                            *
+ *      name -- name of the file to print               *
+ ********************************************************/
+void do_file(char *name)
+{
+    (void)printf("Verbose %d Lines %d Input %s Output %s\n",
+        verbose, line_max, name, out_file);
+}
+/********************************************************
+ * usage -- tell the user how to use this program and   *
+ *              exit                                    *
+ ********************************************************/
+void usage(void)
+{
+    (void)fprintf(stderr,"Usage is %s [options] [file-list]\n", 
+                                program_name);
+    (void)fprintf(stderr,"Options\n");
+    (void)fprintf(stderr,"  -v          verbose\n");
+    (void)fprintf(stderr,"  -l<number>  Number of lines\n");
+    (void)fprintf(stderr,"  -o<name>    Set output filename\n");
+    exit (8);
+}