more exercises

1 files changed, 65 insertions, 0 deletions

diff --git a/3p16.cpp b/3p16.cpp
new file mode 100644
index 0000000..0f1ff0b
--- /dev/null
+++ b/3p16.cpp
@@ -0,0 +1,65 @@
+#include <iostream>
+#include <vector>
+#include "sales_data.hpp"
+#include "sales_item.hpp"
+
+/*
+ *
+ * 3.16
+ *
+ * 
+ */
+
+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> v1; // 0 elements?
+	vector<int> v2(10); // 10 elements, default initialized
+	vector<int> v3(10, 42); // 10 elements, all initialized to 42
+	vector<int> v4{10}; // 1 element, initialized to 10.
+	vector<int> v5{10, 42}; // 2 elements, first one 10, second one 42
+	vector<string> v6{10}; // Not really valid but it creates 10 elements of default initialized strings. Empty strings.
+	vector<string> v7{10, "hi"}; // Not really valid but creates 10 elements that says "hi"
+
+	cout << v1.size() << " <v1 size" << endl;
+	for(auto v1i : v1) { cout << "'" << v1i << "'"; }
+	cout << " <v1 contents" << endl;
+	
+	cout << v2.size() << " <v2 size" << endl;
+	for(auto v2i : v2) { cout << "'" << v2i << "'"; }
+	cout << " <v2 contents" << endl;
+
+	cout << v3.size() << " <v3 size" << endl;
+	for(auto v3i : v3) { cout << "'" << v3i << "'"; }
+	cout << " <v3 contents" << endl;
+
+	cout << v4.size() << " <v4 size" << endl;
+	for(auto v4i : v4) { cout << "'" << v4i << "'"; }
+	cout << " <v4 contents" << endl;
+
+	cout << v5.size() << " <v5 size" << endl;
+	for(auto v5i : v5) { cout << "'" << v5i << "'"; }
+	cout << " <v5 contents" << endl;
+
+	cout << v6.size() << " <v6 size" << endl;
+	for(auto v6i : v6) { cout << "'" << v6i << "'"; }
+	cout << " <v6 contents" << endl;
+
+	cout << v7.size() << " <v7 size" << endl;
+	for(auto v7i : v7) { cout << "'" << v7i << "'"; }
+	cout << " <v7 contents" << endl;
+
+	// some extra testing below
+	//vector<string> v8(10); // same as v6?
+	//vector<string> v9(10, "hi"); // Same as v7?
+	//cout << v7[1] << endl;
+	//cout << v9[1] << endl;
+
+	return 0;
+}