add test 3

tests/t003.cxl

@@ -0,0 +1,19 @@
+#include <stdio.h>
+
+int sum(int * arr)
+{
+    int s;
+    for (s = 0; *arr != 0; arr++)
+    {
+        s += *arr;
+    }
+    return s;
+}
+
+int main(int argc, char * argv[])
+{
+    int a[] = {5, 6, 7, 0};
+    int b[] = {10, 20, -500, 0};
+    printf("%d;%d\n", sum(a), sum(b));
+    return 0;
+}

tests/t003.x

@@ -0,0 +1 @@
+18;-470