3 files changed, 40 insertions, 0 deletions
diff --git a/7p20.cpp b/7p20.cpp
new file mode 100644
index 0000000..7df1af3
--- /dev/null
+++ b/7p20.cpp
@@ -0,0 +1,14 @@
+
+/*
+ *
+ * 7.20
+ *
+ *
+ */
+
+int main () {
+
+	// A friend is able to access private members of a class
+	// Not sure about pros and cons
+	return 0;
+}
diff --git a/7p21.cpp b/7p21.cpp
new file mode 100644
index 0000000..e3e2c5c
--- /dev/null
+++ b/7p21.cpp
@@ -0,0 +1,14 @@
+#include <iostream>
+
+/*
+ *
+ * 7.21
+ *
+ * Done in sales_data.hpp
+ */
+
+int main () {
+
+	
+	return 0;
+}
diff --git a/7p22.cpp b/7p22.cpp
new file mode 100644
index 0000000..58d5fbf
--- /dev/null
+++ b/7p22.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+
+/*
+ *
+ * Description
+ *
+ *
+ */
+
+int main () {
+	return 0;
+}