CPP06 1.0
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main.cpp
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1/* ************************************************************************** */
2/* */
3/* ::: :::::::: */
4/* main.cpp :+: :+: :+: */
5/* +:+ +:+ +:+ */
6/* By: kamitsui <kamitsui@student.42tokyo.jp> +#+ +:+ +#+ */
7/* +#+#+#+#+#+ +#+ */
8/* Created: 2025/07/22 14:54:16 by kamitsui #+# #+# */
9/* Updated: 2025/08/15 20:40:09 by kamitsui ### ########.fr */
10/* */
11/* ************************************************************************** */
12
18#include <cstdlib> // For rand() and srand()
19#include <ctime> // For time()
20#include <iostream>
21
22#include "Base.hpp"
23
28Base *generate(void) {
29 int choice = std::rand() % 3;
30
31 switch (choice) {
32 case 0:
33 std::cout << "Generated type: A" << std::endl;
34 return new A();
35 case 1:
36 std::cout << "Generated type: B" << std::endl;
37 return new B();
38 case 2:
39 std::cout << "Generated type: C" << std::endl;
40 return new C();
41 }
42 return NULL;
43}
44
51void identify(Base *p) {
52 std::cout << "identify(pointer): Actual type is ";
53 if (dynamic_cast<A *>(p))
54 std::cout << "A";
55 else if (dynamic_cast<B *>(p))
56 std::cout << "B";
57 else if (dynamic_cast<C *>(p))
58 std::cout << "C";
59 else
60 std::cout << "Unknown";
61 std::cout << std::endl;
62}
63
73void identify(Base &p) {
74 std::cout << "identify(reference): Actual type is ";
75 try {
76 (void)dynamic_cast<A &>(p);
77 std::cout << "A";
78 } catch (...) {
79 try {
80 (void)dynamic_cast<B &>(p);
81 std::cout << "B";
82 } catch (...) {
83 try {
84 (void)dynamic_cast<C &>(p);
85 std::cout << "C";
86 } catch (...) {
87 std::cout << "Unknown";
88 }
89 }
90 }
91 std::cout << std::endl;
92}
93
100int main() {
101 // Initialize the random seed
102 std::srand(std::time(NULL));
103
104 std::cout << "--- Test Run ---" << std::endl;
105 for (int i = 0; i < 5; ++i) {
106 std::cout << "\n[Test Case " << i + 1 << "]" << std::endl;
107 Base *instance = generate();
108
109 // Identify the type using both pointer and reference
110 identify(instance);
111 identify(*instance);
112
113 // Prevent memory leaks
114 delete instance;
115 }
116
117 return 0;
118}
Base.hpp
Contains the declarations for the Base class and its derivatives.
A
An empty class that inherits from Base.
Definition Base.hpp:40
B
An empty class that inherits from Base.
Definition Base.hpp:46
Base
A base class with a virtual destructor.
Definition Base.hpp:26
C
An empty class that inherits from Base.
Definition Base.hpp:52
std::endl
T endl(T... args)
main
int main()
Main function to test the Serializer.
Definition main.cpp:28
identify
void identify(Base *p)
Identifies the actual type of an object via a pointer.
Definition main.cpp:51
generate
Base * generate(void)
Randomly creates an instance of A, B, or C.
Definition main.cpp:28
std::rand
T rand(T... args)
std::srand
T srand(T... args)
std::time
T time(T... args)