1 files changed, 17 insertions, 0 deletions
diff --git a/test/04-fact.c b/test/04-fact.c
new file mode 100644
index 0000000..0982e08
--- /dev/null
+++ b/test/04-fact.c
@@ -0,0 +1,17 @@
+/* EXPECT:
+6! = 720
+*/
+
+int
+fact(int x)
+{
+   int y = 1;
+   while (x >= 1) {
+      y *= x;
+      x -= 1;
+   }
+   return y;
+}
+
+extern int printf();
+int main() { printf("6! = %d\n", fact(6)); }