added print with indications and all, based on a design for another proyect

include/queue.h

@@ -36,7 +36,7 @@ public:
 
     std::expected<T, QueueErr> dequeue();
 
-    void display();
+    void print();
 };
 
 template <typename T>
@@ -147,4 +147,34 @@ std::expected<T, QueueErr> Queue<T>::peek() {
 
     return out;
 }
+
+template <typename T>
+requires std::formattable<T, char>
+void Queue<T>::print() {
+    if (this->len == 0) {
+        std::println("Queue is empty.");
+        return;
+    }
+
+    std::println("Lenght: {}", this->len);
+    std::println("Capacity: {}", this->cap);
+    for (uint64_t i = 0; i < this->cap; i++) {
+        if (this->tail == this->head) {
+            std::println("H/T --->");
+        } else if (this->tail == i) {
+            std::println("Tail--->");
+        } else if (this->head == i) {
+            std::println("Head--->");
+        } else {
+            std::println("|{:^20}|", "");
+        }
+
+        uint64_t dist = (i + this->cap - this->tail) % this->cap;
+        if (dist < this->len) {
+            std::println("|{:^20}|", this->data[i]);
+        } else {
+            std::println("|{:^20}|", "");
+        }
+    }
+}
 #endif // !QUEUE_H