eliminated redundant root directory

examples/example_test.cpp

@@ -0,0 +1,22 @@
+#include <cassert>
+#include <stdexcept>
+#include <iostream>
+
+#include "../include/safe_integer.hpp"
+#include "../include/safe_compare.hpp"
+
+void detected_msg(bool detected){
+    std::cout << (detected ? ": error detected!" : ": error NOT detected!: ") << std::endl;
+}
+
+#include "example1.cpp"
+#include "example2.cpp"
+#include "example3.cpp"
+#include "example4.cpp"
+
+int main(int argc, const char * argv[]){
+    example1();
+    example2();
+    example3();
+    example4();
+}