Initial commit with kinda crappy unnumbered examples

1 files changed, 53 insertions, 0 deletions

diff --git a/memory-classes.cpp b/memory-classes.cpp
new file mode 100644
index 0000000..19d17e9
--- /dev/null
+++ b/memory-classes.cpp
@@ -0,0 +1,53 @@
+#include "memory-classes.hpp"
+
+#include <iostream>
+
+
+lifo::lifo(std::size_t max_size_) : max_size(max_size_) {
+    m_storage = new int[max_size];
+}
+
+lifo::~lifo() {
+    if (m_storage != nullptr)
+        delete m_storage;
+}
+
+void lifo::push(int v) {
+    if (m_top >= max_size)
+        return;
+
+    m_storage[m_top++] = v;
+}
+
+int lifo::pop() {
+    if (m_top <= 0)
+        return 0;
+
+    return m_storage[--m_top];
+}
+
+
+int main(int argc, char *argv[]) {
+
+    // the lifo allocates a memory buffer
+    lifo stack(5);
+
+    stack.push(1);
+    stack.push(2);
+    stack.push(3);
+    stack.push(4);
+    stack.push(5);
+
+    std::cout << stack.pop() << std::endl;
+    std::cout << stack.pop() << std::endl;
+    std::cout << stack.pop() << std::endl;
+    std::cout << stack.pop() << std::endl;
+    std::cout << stack.pop() << std::endl;
+
+    return 0;
+    
+    // here, when the scope ends the stack object is destroyed
+    // as it goes *out of scope*, and so the destructor is called
+    // which frees the memory
+
+}