import BTL learn(1) lessons/C

1 files changed, 29 insertions, 0 deletions

diff --git a/usr.bin/learn/lib/C/L19.1a b/usr.bin/learn/lib/C/L19.1a
new file mode 100644
index 00000000000..21e46af064b
--- /dev/null
+++ b/usr.bin/learn/lib/C/L19.1a
@@ -0,0 +1,29 @@
+#print
+Write a subroutine which counts the number of times it has
+been called and returns that count each time.  Name it
+"count()".  Write it on a file named "count.c".  Compile
+and test it; type "ready" when happy.
+#once #create Ref
+23080
+#once #create tzaqc.c
+main() {
+	int i;
+	for (i = 0; i < 23079; i++)
+		count();
+	printf("%d\n", count());
+}
+#user
+cc tzaqc.c count.o
+a.out  >value
+#cmp value Ref
+#succeed
+/*  one way */
+count()
+{
+	static int n = 0;
+	return(++n);
+}
+#log
+#next
+30.1a 10
+20.1a 5