Forgot how painful input buffers are

5 files changed, 118 insertions, 1 deletions

diff --git a/3p37.cpp b/3p37.cpp
new file mode 100644
index 0000000..968ce86
--- /dev/null
+++ b/3p37.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+#include <vector>
+#include "sales_data.hpp"
+#include "sales_item.hpp"
+
+/*
+ *
+ * 3.37
+ *
+ * 
+ */
+
+int main () {
+
+	const char ca[] = {'H', 'e', 'l', 'l', 'o'/*, '\0'*/};
+	const char *cp = ca;
+	while(*cp) {
+		std::cout << *cp << std::endl;
+		++cp;
+	}
+	/*
+	 * This causes a buffer overflow because there is no null character at the end of the string
+	 * If we put a null-character at the end of the string we don't get an overflow.
+	 */
+	return 0;
+}
diff --git a/3p38.cpp b/3p38.cpp
new file mode 100644
index 0000000..f3e320c
--- /dev/null
+++ b/3p38.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+#include <vector>
+#include "sales_data.hpp"
+#include "sales_item.hpp"
+
+/*
+ *
+ * 3.38
+ *
+ * Adding two memory addresses together will give us
+ * some completely unknown memory address we know
+ * nothing about
+ */
+
+int main () {
+	return 0;
+}
diff --git a/3p39.cpp b/3p39.cpp
new file mode 100644
index 0000000..6f25e86
--- /dev/null
+++ b/3p39.cpp
@@ -0,0 +1,51 @@
+#include <iostream>
+#include <vector>
+#include "sales_data.hpp"
+#include "sales_item.hpp"
+#include <cstring>
+#include <string>
+#include <limits>
+
+/*
+ *
+ * 3.39
+ *
+ *
+ */
+
+int main () {
+
+	std::string s1;
+	std::string s2;
+	if(std::cin >> s1 >> s2) {} else { return -1; }
+	if(s1 == s2) {
+		std::cout << "Both strings are equal!" << std::endl;
+	} else {
+		std::cout << "The strings are not equal!" << std::endl;
+	}
+
+	// DUDE i forgot how painful input buffers can be!!! THIS SUCKS! This input sucks and we can only input the maximum characters but whatever im not spending more time on this exercise
+	constexpr size_t cstring_size = 10;
+	char cs1[cstring_size];
+	char cs2[cstring_size];
+	cs1[0] = '\0';
+	cs2[0] = '\0';
+	for(size_t i = 0 ; i != cstring_size-1 ; ++i) {
+		std::cin >> cs1[i];
+		cs1[i+1] = '\0';
+	}
+
+	std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+	for(size_t i = 0 ; i != cstring_size-1 ; ++i) {
+		std::cin >> cs2[i];
+		cs2[i+1] = '\0';
+	}
+
+	if(std::strcmp(cs1, cs2) == 0) {
+		std::cout << "Both strings are equal!" << std::endl;
+	} else {
+		std::cout << "The strings are not equal!" << std::endl;
+	}
+	
+	return 0;
+}
diff --git a/3p40.cpp b/3p40.cpp
new file mode 100644
index 0000000..0ca64fd
--- /dev/null
+++ b/3p40.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <vector>
+#include <cstring>
+#include "sales_data.hpp"
+#include "sales_item.hpp"
+
+/*
+ *
+ * 3.40
+ *
+ * Is this overkill?
+ */
+
+int main () {
+
+	char ch1[] = "Hello, ";
+	char ch2[] = "World!";
+	char chfinal[1000];
+	chfinal[0] = '\0';
+	std::strcpy(chfinal, ch1);
+	std::strcat(chfinal, ch2);
+	std::cout << chfinal << std::endl;
+	return 0;
+}
diff --git a/UBasan-test.cpp b/UBasan-test.cpp
index 1cbcfc7..b5ca4bd 100644
--- a/UBasan-test.cpp
+++ b/UBasan-test.cpp
@@ -20,7 +20,6 @@ int main () {
 	std::cin >> a;
 	double b = 10 / a;
 	std::cout << b << std::endl;
-
 	int c = 10;
 	std::cout << "Input a 0: " << std::endl;
 	std::cin >> c;