support bazel complie this project and format code.

2023-03-30 00:15:11 +08:00
parent 1f86192576
commit 7529ae3a55
636 changed files with 10025 additions and 9387 deletions
--- a/practical_exercises/10_day_practice/day5/inherit_access/BUILD
+++ b/practical_exercises/10_day_practice/day5/inherit_access/BUILD
@@ -0,0 +1,23 @@
+# please run `bazel run //practical_exercises/10_day_practice/day5/inherit_access:public`
+# please run `bazel run //practical_exercises/10_day_practice/day5/inherit_access:protected_inherit`
+# please run `bazel run //practical_exercises/10_day_practice/day5/inherit_access:protected`
+# please run `bazel run //practical_exercises/10_day_practice/day5/inherit_access:private`
+
+load("@rules_cc//cc:defs.bzl", "cc_binary")
+
+cc_binary(
+    name = "public",
+    srcs = ["public.cpp"],
+)
+cc_binary(
+    name = "protected_inherit",
+    srcs = ["protected_inherit.cpp"],
+)
+cc_binary(
+    name = "protected",
+    srcs = ["protected.cpp"],
+)
+cc_binary(
+    name = "private",
+    srcs = ["private.cpp"],
+)
--- a/practical_exercises/10_day_practice/day5/inherit_access/private.cpp
+++ b/practical_exercises/10_day_practice/day5/inherit_access/private.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+using namespace std;
+class base {
+  int x;
+
+public:
+  void setx(int n) { x = n; }
+  int getx() { return x; }
+  void showx() { cout << x << endl; }
+};
+//派生类
+class derived : public base {
+  int y;
+
+public:
+  void sety(int n) { y = n; }
+  void sety() { y = getx(); }
+  void showy() { cout << y << endl; }
+};
+//派生类不可直接访问基类的private成员，可通过基类的共有成员函数访问
+int main() {
+  derived obj;
+  obj.setx(10);
+  obj.sety(20);
+  obj.showx();
+  obj.showy();
+  obj.sety();
+  obj.showx();
+  obj.showy();
+  
+}
--- a/practical_exercises/10_day_practice/day5/inherit_access/protected.cpp
+++ b/practical_exercises/10_day_practice/day5/inherit_access/protected.cpp
@@ -0,0 +1,33 @@
+/*
+基类中protected的成员
+类内部：可以访问
+类的使用者：不能访问
+类的派生类成员：可以访问
+*/
+#include <iostream>
+class B {
+private:
+  int i;
+
+protected:
+  int j;
+
+public:
+  int k;
+};
+class D : public B {
+public:
+  void f() {
+    i = 1; // cannot access 派生类不可访问基类私有成员
+    j = 2; //派生类可以访问基类保护成员
+    k = 3;
+  }
+};
+int main() {
+  B b;
+  b.i = 1; // cannot access 私有成员，类的使用者不能访问
+  b.j = 2; // cannot access 保护成员，类的使用者不能访问
+  b.k = 3;
+  
+  return 0;
+}
--- a/practical_exercises/10_day_practice/day5/inherit_access/protected_inherit.cpp
+++ b/practical_exercises/10_day_practice/day5/inherit_access/protected_inherit.cpp
@@ -0,0 +1,40 @@
+/*
+派生方式为protected的继承称为保护继承，在这种继承方式下，
+基类的public成员在派生类中会变成protected成员，
+基类的protected和private成员在派生类中保持原来的访问权限
+*/
+#include <iostream>
+using namespace std;
+class Base {
+  int x;
+
+protected:
+  int getx() { return x; }
+
+public:
+  void setx(int n) { x = n; }
+  void showx() { cout << x << endl; }
+};
+class Derived : protected Base {
+  int y;
+
+public:
+  void sety(int n) { y = n; }
+  void sety() { y = getx(); } //访问基类的保护成员
+  void showy() { cout << y << endl; }
+};
+int main() {
+  Derived obj;
+  obj.setx(10); //错误
+  obj.sety(20);
+  obj.showx(); //错误，
+  obj.showy();
+  
+}
+
+/*
+解释：
+如最上面文字所示：保护继承会将基类的public变为protected，而对于protected成员，
+外部去使用保护成员的时候，会报错，所以setx与showx访问错误，而对于派生类，则可直接访问基类的保护成员，
+在派生类中，y=getx()可正常访问！
+*/
--- a/practical_exercises/10_day_practice/day5/inherit_access/public.cpp
+++ b/practical_exercises/10_day_practice/day5/inherit_access/public.cpp
@@ -0,0 +1,27 @@
+#include <iostream>
+using namespace std;
+class Base {
+  int x;
+
+public:
+  void setx(int n) { x = n; }
+  int getx() { return x; }
+  void showx() { cout << x << endl; }
+};
+//私有继承
+//基类的中的public成员在派生类中是private, private成员在派生类中不可访问。
+class derived : private Base {
+  int y;
+
+public:
+  void sety(int n) { y = n; }
+  void sety() { y = getx(); }
+  void showy() { cout << y << endl; }
+};
+int main() {
+  derived obj;
+  obj.setx(10); // cannot access
+  obj.sety(20);
+  obj.showx(); // cannot access
+  obj.showy();
+}
--- a/practical_exercises/10_day_practice/day5/inherit_access/readme.md
+++ b/practical_exercises/10_day_practice/day5/inherit_access/readme.md
@@ -0,0 +1,48 @@
+һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>м̳<EFBFBD>
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