1 files changed, 29 insertions, 0 deletions
diff --git a/tests/exec/interval.cpp b/tests/exec/interval.cpp
new file mode 100644
index 0000000..81661e3
--- /dev/null
+++ b/tests/exec/interval.cpp
@@ -0,0 +1,29 @@
+#include <iostream>
+
+class interval {
+public:
+  int low, hi;
+  interval(int low, int hi);
+  void iterate(int& i);
+  int ok(int& i);
+  int next(int& i);
+};
+
+interval::interval(int low, int hi) {
+  this->low = low;
+  this->hi  = hi;
+}
+
+void interval::iterate(int& i) { i = low; }
+
+int interval::ok(int& i) { return i <= hi; }
+
+int interval::next(int& i) { return i++; }
+
+int main() {
+  interval s = interval(3, 10);
+  int i;
+  s.iterate(i);
+  while(s.ok(i))
+    std::cout << s.next(i) << "\n";
+}