more confusion

1 files changed, 34 insertions, 0 deletions

diff --git a/iterator-test-3.cpp b/iterator-test-3.cpp
new file mode 100644
index 0000000..09cf159
--- /dev/null
+++ b/iterator-test-3.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+#include <vector>
+#include "sales_data.hpp"
+#include "sales_item.hpp"
+/*
+ *
+ * Pretty much same as last iterator test
+ * Still a bit confused about this stuff.
+ * Especially the fact that you cant add two iterators
+ */
+
+using std::string;
+using std::cout;
+using std::cin;
+using std::cerr;
+using std::clog;
+using std::endl;
+using std::vector;
+int main () {
+
+	
+	vector<int> vec = {10, 20, 30, 40, 50, 60, 70, 80, 90, 100};
+	auto it1 = vec.begin(); // points at 10 in the vector
+	it1 += 9; // we go 9 places forwards - 20 - 30 - 40 - 50 - 60 - 70 - 80 - 90 - 100.
+	// it1 now points to 100
+	cout << *it1 << endl;
+	auto it2 = vec.begin();
+	auto diff = it1 - it2;
+	auto it3 = vec.begin();
+	it3 += diff;
+	cout << diff << " < diff" << endl;
+	cout << *it3 << endl;
+	return 0;
+}