Test stack overflow.

main.cpp

@@ -1,14 +1,15 @@
 #include <iostream>
 
+void test(int*);
+int num{ 0 };
+
 int main()
 {
-    int i1{ };
-    int i2{ };
-    std::cout << "Enter a Integer: ";
-    std::cin >> i1;
-    std::cout << "Enter another Integer: ";
-    std::cin >> i2;
-    std::cout << i1 << " + " << i2 << " is " << i1 + i2 << "\n";
-    std::cout << i1 << " - " << i2 << " is " << i1 - i2 << "\n";
+    test(&num);
     return 0;
 }
+
+void test(int* execNum) {
+    std::cout << ++(*execNum) << ".";
+    test(execNum);
+}