basic automated testing

1 files changed, 23 insertions, 0 deletions

diff --git a/test/09-varargs.c b/test/09-varargs.c
new file mode 100644
index 0000000..c15b887
--- /dev/null
+++ b/test/09-varargs.c
@@ -0,0 +1,23 @@
+/* EXPECT:
+1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36
+*/
+
+
+#include <stdarg.h>
+#include <stdio.h>
+
+int sum(int x, ...) {
+   va_list ap;
+   va_start(ap, x);
+   printf("%d", x);
+   for (int y; (y = va_arg(ap, int));) {
+      printf(" + %d",y);
+      x += y;
+   }
+   va_end(ap);
+   return x;
+}
+
+int main() {
+   printf(" = %d\n", sum(1,2,3,4,5,6,7,8,0,0));
+}