1 files changed, 66 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/OR_PRACTICAL_C/06_3.c b/reference/C/CONTRIB/OR_PRACTICAL_C/06_3.c
new file mode 100644
index 0000000..bc0598a
--- /dev/null
+++ b/reference/C/CONTRIB/OR_PRACTICAL_C/06_3.c
@@ -0,0 +1,66 @@
+/********************************************************
+ * guess -- a simple guessing game                      *
+ *                                                      *
+ * Usage:                                               *
+ *      guess                                           *
+ *                                                      *
+ *      A random number is chosen between 1 and 100.    *
+ *      The player is given a set of bounds and         *
+ *      must choose a number between them.              *
+ *      If the player chooses the correct number he wins*
+ *      Otherwise the bounds are adjusted to reflect    *
+ *      the player's guess and the game continues.      *
+ *                                                      *
+ *                                                      *
+ * Restrictions:                                        *
+ *      The random number is generated by the statement *
+ *      rand() % 100.  Because rand() returns a number  *
+ *      0 <= rand() <= maxint  this slightly favors     *
+ *      the lower numbers.                              *
+ ********************************************************/
+#include <stdio.h>
+#include <stdlib.h>     /* ANSI Standard only */
+int   number_to_guess;  /* random number to be guessed */
+int   low_limit;        /* current lower limit of player's range */
+int   high_limit;       /* current upper limit of player's range */
+int   guess_count;      /* number of times player guessed */
+int   player_number;    /* number gotten from the player */
+char  line[80];         /* input buffer for a single line */
+main()
+{
+    while (1) {
+        /*
+         * Not a pure random number, see restrictions 
+         */
+        number_to_guess = rand() % 100 + 1;
+
+        /* Initialize variables for loop */
+        low_limit = 0;
+        high_limit = 100;
+        guess_count = 0;
+
+        while (1) {
+            /* tell user what the bounds are and get his guess */
+            (void) printf("Bounds %d - %d\n", low_limit, high_limit);
+            (void) printf("Value[%d]? ", guess_count);
+
+            guess_count++;
+
+            (void) fgets(line, sizeof(line), stdin);
+            (void) sscanf(line, "%d", &player_number);
+
+            /* did he guess right? */
+            if (player_number == number_to_guess)
+                break;
+
+            /* adjust bounds for next guess */
+            if (player_number < number_to_guess)
+                low_limit = player_number;
+            else
+                high_limit = player_number;
+
+        }
+        (void) printf("Bingo\n");
+    }
+    return (0);
+}