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support bazel complie this project and format code.

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This commit is contained in:
zhangxing
2023-03-30 00:15:11 +08:00
committed by light-city
parent 1f86192576
commit 7529ae3a55
636 changed files with 10025 additions and 9387 deletions
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23
practical_exercises/10_day_practice/day5/virtual/BUILD Normal file
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# please run `bazel run //practical_exercises/10_day_practice/day5/virtual:example2`
# please run `bazel run //practical_exercises/10_day_practice/day5/virtual:init`
# please run `bazel run //practical_exercises/10_day_practice/day5/virtual:seq`
# please run `bazel run //practical_exercises/10_day_practice/day5/virtual:example1`
load("@rules_cc//cc:defs.bzl", "cc_binary")
cc_binary(
name = "example2",
srcs = ["example2.cpp"],
)
cc_binary(
name = "init",
srcs = ["init.cpp"],
)
cc_binary(
name = "seq",
srcs = ["seq.cpp"],
)
cc_binary(
name = "example1",
srcs = ["example1.cpp"],
)

17
practical_exercises/10_day_practice/day5/virtual/example1.cpp Normal file
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/* 例1.cpp */
#include <iostream>
using namespace std;
class A {
public:
void vf() { cout << "I come from class A" << endl; }
};
class B : public A {};
class C : public A {};
class D : public B, public C {};
int main() {
D d;
d.vf(); // error
return 0;
}

17
practical_exercises/10_day_practice/day5/virtual/example2.cpp Normal file
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/* 例2.cpp */
#include <iostream>
using namespace std;
class A {
public:
void vf() { cout << "I come from class A" << endl; }
};
class B : virtual public A {};
class C : virtual public A {};
class D : public B, public C {};
int main() {
D d;
d.vf(); // okay
return 0;
}

39
practical_exercises/10_day_practice/day5/virtual/init.cpp Normal file
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/* 派生类初始化.cpp */
#include <iostream>
using namespace std;
class A {
int a;
public:
A(int x) {
a = x;
cout << "Virtual Bass A..." << endl;
}
};
class B : virtual public A {
public:
B(int i) : A(i) { cout << "Virtual Bass B..." << endl; }
};
class C : virtual public A {
int x;
public:
C(int i) : A(i) {
cout << "Constructing C..." << endl;
x = i;
}
};
class ABC : public C, public B {
public:
//虚基类由最终派生类初始化
ABC(int i, int j, int k)
: C(i), B(j), A(i) // L1，这里必须对A进行初始化
{
cout << "Constructing ABC..." << endl;
}
};
int main() {
ABC obj(1, 2, 3);
return 0;
}

21
practical_exercises/10_day_practice/day5/virtual/readme.md Normal file
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practical_exercises/10_day_practice/day5/virtual/seq.cpp Normal file
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/* 虚基类调用次序(重要).cpp */
//重要!!!
#include <iostream>
using namespace std;
class A {
int a;
public:
A() { cout << "Constructing A" << endl; }
};
class B {
public:
B() { cout << "Constructing B" << endl; }
};
class B1 : virtual public B, virtual public A {
public:
B1(int i) { cout << "Constructing B1" << endl; }
};
class B2 : public A, virtual public B {
public:
B2(int j) { cout << "Constructing B2" << endl; }
};
class D : public B1, public B2 {
public:
D(int m, int n) : B1(m), B2(n) { cout << "Constructing D" << endl; }
A a;
};
int main() {
D d(1, 2);
return 0;
}