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1 files changed, 65 insertions, 0 deletions

diff --git a/3p30.cpp b/3p30.cpp
new file mode 100644
index 0000000..68d4cdd
--- /dev/null
+++ b/3p30.cpp
@@ -0,0 +1,65 @@
+#include <iostream>
+#include <vector>
+#include "sales_data.hpp"
+#include "sales_item.hpp"
+
+/*
+ *
+ * 3.30
+ *
+ *
+ */
+
+using std::string;
+using std::cout;
+using std::cin;
+using std::cerr;
+using std::clog;
+using std::endl;
+using std::vector;
+
+int main() {
+	/*
+	constexpr size_t array_size = 10;
+	int ia[array_size];
+	for (size_t ix = 1; ix <= array_size; ++ix) {
+		ia[ix] = ix;
+	}
+
+	In the for loop:
+	ix should start at 0 rather than 1. Because when we use subscripts it starts at 0.
+	In this case, if we were to start with '1' then the first element in the array would remain uninitialized.
+
+	ix should also not be compared to array sized using <=
+	array_size only tells us how many elements the array has, but when using subscripts we start at 0, so this means
+	we would need to compare to array_size-1 or use just the '<' operator, because then we also check at array_size-1
+
+	If we want to nitpick about the requirements of what the program is supposed to do we could change even more.
+	Maybe we want to start at 1 and get an array of 1 - 10?
+	*/
+
+	// Fixed version here, fills array with 0 - 9
+	constexpr size_t array_size = 10;
+	int ia[array_size];
+	for (size_t ix = 0; ix < array_size; ++ix) {
+		ia[ix] = ix;
+	}
+
+	// Same program but if we wanted the array to be from 1 - 10
+	constexpr size_t array_size2 = 10;
+	int ia2[array_size2];
+	for (size_t ix2 = 0; ix2 < array_size2; ++ix2) {
+		ia2[ix2] = ix2 + 1;
+	}
+
+	for(auto i : ia) {
+		cout << i << endl;
+	}
+	
+	cout << endl;
+	for(auto i : ia2) {
+		cout << i << endl;
+	}
+	
+	return 0;
+}