66 lines
1.1 KiB
C++
66 lines
1.1 KiB
C++
#include <iostream>
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#include <cstdlib>
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#include <exception>
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#include "Classes.hpp"
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Base * generate() {
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Base *base;
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srand (time(NULL));
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int i = rand() % 3;
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if (i == 0) {
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std::cout << "A\n";
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base = new A();
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}
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else if (i == 1) {
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std::cout << "B\n";
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base = new B();
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}
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else {
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std::cout << "C\n";
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base = new C();
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}
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return base;
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}
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void identify(Base* p) {
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A * a;
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B * b;
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C * c;
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a = dynamic_cast<A *>(p);
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if ( a != NULL)
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std::cout << "A\n";
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b = dynamic_cast<B *>(p);
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if ( b != NULL)
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std::cout << "B\n";
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c = dynamic_cast<C *>(p);
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if ( c != NULL)
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std::cout << "C\n";
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}
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void identify(Base& p) {
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Base base;
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try {base = dynamic_cast<A&>(p); std::cout << "<A> ";}
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catch ( std::exception ) {std::cout << "<not A...> ";}
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try {base = dynamic_cast<B&>(p); std::cout << "<B> ";}
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catch ( std::exception ) {std::cout << "<not B...> ";}
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try {base = dynamic_cast<C&>(p); std::cout << "<C> ";}
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catch ( std::exception ) {std::cout << "<not C...> ";}
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std::cout << "\n";
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}
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int main() {
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Base *base = generate();
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identify(base);
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identify(*base);
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delete base;
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return 0;
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}
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