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11 files changed, 241 insertions, 2 deletions

diff --git a/1p23.cpp b/1p23.cpp
new file mode 100644
index 0000000..bb9336e
--- /dev/null
+++ b/1p23.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 1.24 exercise
+ *
+ *
+ */
+
+int main () {
+
+	Sales_item Item;
+	Sales_item CurItem;	
+	if(std::cin >> CurItem) {
+		int Count = 1;
+		while(std::cin >> Item) {
+			if(Item.isbn() == CurItem.isbn()) {
+				Count++;
+			} else {
+				std::cout << "ISBN: " << CurItem.isbn() << " has " << Count << " transactions" << std::endl;
+				CurItem = Item;
+				Count = 1;
+			}
+		}
+		std::cout << "ISBN: " << CurItem.isbn() << " has " << Count << " transactions" << std::endl;
+	}
+
+	return 0;
+}
diff --git a/1p24.cpp b/1p24.cpp
new file mode 100644
index 0000000..bb9336e
--- /dev/null
+++ b/1p24.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 1.24 exercise
+ *
+ *
+ */
+
+int main () {
+
+	Sales_item Item;
+	Sales_item CurItem;	
+	if(std::cin >> CurItem) {
+		int Count = 1;
+		while(std::cin >> Item) {
+			if(Item.isbn() == CurItem.isbn()) {
+				Count++;
+			} else {
+				std::cout << "ISBN: " << CurItem.isbn() << " has " << Count << " transactions" << std::endl;
+				CurItem = Item;
+				Count = 1;
+			}
+		}
+		std::cout << "ISBN: " << CurItem.isbn() << " has " << Count << " transactions" << std::endl;
+	}
+
+	return 0;
+}
diff --git a/1p5p2-example.cpp b/1p5p2-example.cpp
new file mode 100644
index 0000000..53ed4bc
--- /dev/null
+++ b/1p5p2-example.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 1.5.2 example
+ *
+ *
+ */
+
+int main() {
+	
+	Sales_item item1, item2;
+	std::cin >> item1 >> item2;
+	if (item1.isbn() == item2.isbn()) {
+		std::cout << item1 + item2 << std::endl;
+		return 0;
+	} else {
+		std::cerr << "Data must refer to same ISBN"
+				  << std::endl;
+		return -1;
+	}
+
+	return 0;
+}
diff --git a/1p6.cpp b/1p6.cpp
new file mode 100644
index 0000000..71dfd28
--- /dev/null
+++ b/1p6.cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 1.6 example
+ *
+ *
+ */
+
+int main () {
+
+	Sales_item Total;
+	Sales_item Trans;
+	if(std::cin >> Total) {
+		while(std::cin >> Trans) {
+			if(Trans.isbn() == Total.isbn()) {
+				Total += Trans;
+			} else {
+				std::cout << Total << std::endl;
+				Total = Trans;
+			}
+		}
+		
+		std::cout << Total << std::endl;
+	} else {
+		std::cerr << "Error" << std::endl;
+		return -1;
+	}
+	
+	return 0;
+}
diff --git a/2p10.cpp b/2p10.cpp
new file mode 100644
index 0000000..394a0f8
--- /dev/null
+++ b/2p10.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 2.10
+ *
+ *
+ */
+
+std::string gl_string; // ""
+int gl_val; // 0
+
+int main () {
+
+	std::string l_string; // ""
+	//int l_val; // Undefined behavior
+
+	std::cout << gl_string << std::endl;
+	std::cout << gl_val << std::endl;
+	std::cout << l_string << std::endl;
+	//std::cout << l_val << std::endl;
+	return 0;
+}
diff --git a/2p12.cpp b/2p12.cpp
new file mode 100644
index 0000000..73eef5c
--- /dev/null
+++ b/2p12.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 2.12
+ *
+ *
+ */
+
+int main () {
+
+	//int double = 3.14; // Invalid
+	//int catch-22 = 1; // Invalid
+	double Double = 3.14; 
+	int __ = 99; // HOW IS THIS VALID
+  	//int 1_or_2 = 2; // Invalid
+	std::cout << Double << "\n" << __ << std::endl;
+	return 0;
+}
diff --git a/2p13.cpp b/2p13.cpp
new file mode 100644
index 0000000..2fdb562
--- /dev/null
+++ b/2p13.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ * 2.13
+ * Program does not compile using as many flags as i do. Which is probably a really good idea though.
+ * 
+ *
+ */
+
+int gi = 42;
+int main () {
+
+	int i = 100;
+	int j = i;
+	std::cout << gi << " " << i << " " << j << std::endl;
+	return 0;
+}
diff --git a/2p3-2p4.cpp b/2p3-2p4.cpp
new file mode 100644
index 0000000..dcc0c86
--- /dev/null
+++ b/2p3-2p4.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 2.3 and 2.4
+ *
+ *
+ */
+
+int main () {
+	
+	unsigned u = 10, u2 = 42;
+	std::cout << u2 - u << std::endl; // 32
+	std::cout << u - u2 << std::endl; // big ass number
+	int i = 10, i2 = 42;
+	std::cout << i2 - i << std::endl; // 32
+	std::cout << i - i2 << std::endl; // -32
+	std::cout << i - u << std::endl; // 0
+	std::cout << u - i << std::endl; // 0
+	return 0;
+}
diff --git a/2p6-2p7-2p8.cpp b/2p6-2p7-2p8.cpp
new file mode 100644
index 0000000..adec444
--- /dev/null
+++ b/2p6-2p7-2p8.cpp
@@ -0,0 +1,23 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 2.6, 2.7, 2.8
+ *
+ *
+ */
+
+int main () {
+
+	int month1 = 9;
+	int day1 = 7;
+	//int month2 = 09; // Invalid!
+	//int day2 = 07;
+	std::cout << "month1: " << month1 << " day1: " << day1 << std::endl;
+	std::cout << "Who goes with F\145rgus?\012";
+	std::cout << "2M\n";
+	std::cout << "2\tM\n";
+	
+	return 0;
+}
diff --git a/2p9.cpp b/2p9.cpp
new file mode 100644
index 0000000..e4c48ba
--- /dev/null
+++ b/2p9.cpp
@@ -0,0 +1,15 @@
+#include <iostream>
+#include "sales_item.hpp"
+
+/*
+ *
+ * 2.9
+ *
+ *
+ */
+
+int main () {
+
+	// Depends completely on what compiler options are enabled. I have tons of flags enabled to prevent myself from stupid mistakes.
+	return 0;
+}
diff --git a/Makefile b/Makefile
index 40ebce8..e171277 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 CC1=clang++
 CC2=g++
-CFLAGS_CLANG=-O0 -Wfatal-errors -Wall -Werror -Wextra -g3 -fsanitize=address -fsanitize=leak -Wpedantic -Wformat=2 -Wshadow -fno-common -std=c++11
-CFLAGS_GCC=-O0 -Wfatal-errors -Wall -Werror -Wextra -g3 -fsanitize=address -fsanitize=leak -Wpedantic -Wformat=2 -Wshadow -fno-common -std=c++11 -Wformat-truncation=2 -Wformat-overflow
+CFLAGS_CLANG=-O0 -Wfatal-errors -Wall -Werror -Wextra -g3 -fsanitize=address -fsanitize=leak -Wpedantic -Wformat=2 -Wshadow -fno-common -std=c++2b
+CFLAGS_GCC=-O0 -Wfatal-errors -Wall -Werror -Wextra -g3 -fsanitize=address -fsanitize=leak -Wpedantic -Wformat=2 -Wshadow -fno-common -std=c++2b -Wformat-truncation=2 -Wformat-overflow
 BINDIR=bin
 SRCS=$(wildcard *.cpp)
 OBJS_CLANG=$(patsubst %.cpp, $(BINDIR)/clang/%, $(SRCS))