Adding exam part 1/4

Exam/part1/TQueue.cpp

@@ -0,0 +1,47 @@
+#include "TQueue.h"
+
+#include <stdexcept>
+
+
+void TQueue::Enqueue(const std::string& text)
+{
+    if (IsFull())
+        throw std::overflow_error("Queue Overflow");
+    queue[tail] = text;
+    tail = (tail + 1) % MAX_SIZE;
+    count++;
+}
+
+std::string TQueue::Dequeue()
+{
+    if (IsEmpty())
+        throw std::underflow_error("Empty Queue");
+    const std::string item = queue[head];
+    head = (head + 1) % MAX_SIZE;
+    count--;
+    return item;
+}
+
+std::string TQueue::Peek() const
+{
+    if (IsEmpty())
+        throw std::underflow_error("Empty Queue");
+    return queue[head];
+}
+
+bool TQueue::IsEmpty() const
+{
+    return count == 0;
+}
+
+bool TQueue::IsFull() const
+{
+    return count == MAX_SIZE;
+}
+
+int TQueue::GetTail() const
+{
+    if (IsEmpty())
+        throw std::underflow_error("Empty Queue");
+    return tail;
+}