异常

base/CMakeLists.txt

@@ -60,4 +60,6 @@ add_executable(uses_stuc reusing/uses_stuc.cpp)
 add_executable(stacktp stl/stacktp.cpp)
 add_executable(stacktp1 stl/stacktp1.cpp)
 add_executable(arraytp stl/arraytp.cpp)
-add_executable(tv friend/tv.cpp friend/use_tv.cpp friend/tvfm.h)
+add_executable(tv friend/tv.cpp friend/use_tv.cpp friend/tvfm.h)
+add_executable(queuetp friend/queuetp.cpp)
+add_executable(error1 exception/error1.cpp)

base/exception/error1.cpp

@@ -0,0 +1,32 @@
+//
+// Created by nicemoe on 2021/9/5.
+//
+
+#include  <iostream>
+#include <cstdlib>
+
+using namespace std;
+
+
+double hmean(double a, double b);
+
+int main() {
+
+    double x, y, z;
+    cout << "Enter two numbers: ";
+    while (cin >> x >> y) {
+        z = hmean(x, y);
+        cout << "Harmonice mean of " << x << " and " << y << " is " << z << endl;
+        cout << "Rnter next set of numbers <q to quit>:";
+    }
+    cout << "Bye!\n";
+    return 0;
+}
+
+double hmean(double a, double b) {
+    if (a == -b) {
+        cout << "untenable argument to hmean()\n";
+        abort();
+    }
+    return 2.0 * a * b / (a + b);
+}

base/friend/queuetp.cpp

@@ -0,0 +1,28 @@
+//
+// Created by nicemoe on 2021/9/5.
+//
+
+#include  <iostream>
+#include <string>
+#include "queuetp.h"
+
+using namespace std;
+
+int main() {
+
+    QueueTp<string> cs(5);
+    string temp;
+
+    while (!cs.isFull()){
+        cout <<"Please enter your name. You will be served in the order of arrival.\n";
+        getline(cin,temp);
+        cs.enQueue(temp);
+    }
+    cout <<"The queue is full. Processing begins!\n";
+
+    while (!cs.isEmpty()){
+        cs.deQueue(temp);
+        cout <<"Now processing " << temp<<"...\n";
+    }
+    return 0;
+}

base/friend/queuetp.h

@@ -0,0 +1,89 @@
+//
+// Created by nicemoe on 2021/9/5.
+//
+
+#ifndef BASE_QueueTp_H
+#define BASE_QueueTp_H
+
+template<class Item>
+class QueueTp {
+private:
+    enum {
+        Q_SIZE = 10
+    };
+
+    class Node {
+    public:
+        Item item;
+        Node *next;
+
+        Node(const Item &i) : item(i), next(0) {}
+    };
+
+    Node *front;
+    Node *rear;
+    int items;
+    const int qsize;
+
+    QueueTp(const QueueTp &q) : qsize(0) {}
+
+    QueueTp &operator=(const QueueTp &q) {
+        return *this;
+    }
+
+public:
+    QueueTp(int qs = Q_SIZE);
+
+    ~QueueTp(){};
+
+    bool isEmpty() const {
+        return items == 0;
+    }
+
+    bool isFull() const {
+        return items == qsize;
+    }
+
+    int queueCount() const {
+        return items;
+    }
+
+    bool enQueue(const Item &item);
+
+    bool deQueue(Item &item);
+};
+
+template<class Item>
+QueueTp<Item>::QueueTp(int qs):qsize(qs) {
+    front = rear = 0;
+    items = 0;
+}
+
+template<class Item>
+bool QueueTp<Item>::enQueue(const Item &item) {
+    if (isFull()) return false;
+    Node *add = new Node(item);
+    items++;
+    if (front == 0) {
+        front = add;
+    } else {
+        rear->next = add;
+    }
+    rear = add;
+    return true;
+}
+
+template<class Item>
+bool QueueTp<Item>::deQueue(Item &item) {
+    if (front == 0) return false;
+    item = front->item;
+    items--;
+    Node *temp = front;
+    front = front->next;
+    delete temp;
+    if (items == 0) rear = 0;
+    return true;
+
+}
+
+#endif //BASE_QueueTp_H

base/friend/use_tvfm.cpp

@@ -0,0 +1,33 @@
+//
+// Created by zhuyi on 2021/9/3.
+//
+#include <iostream>
+#include "tvfm.h"
+
+int main(){
+    using std::cout;
+    using std::endl;
+    Tv s42;
+    cout <<"Initial settings for 42\" TV:\n";
+    s42.settings();
+    s42.onoff();
+    s42.chanup();
+    cout <<"\nAdjusted settings for 42\" TV\n";
+    s42.chanup();
+    cout <<"\nAdjusted settings for 42\" TV:\n";
+    s42.settings();
+    Remote grey;
+    grey.set_chan(s42,10);
+    grey.volup(s42);
+    grey.volup(s42);
+    cout <<"\n42\" settings after usinfg remote:\n";
+    s42.settings();
+
+    Tv s58(Tv::ON);
+    s58.set_mode();
+    grey.set_chan(s58,28);
+    cout <<"\n58\" settings:\n";
+    s58.settings();
+    return 0;
+}
+