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\/\/\n\/\/ Created by blacksungrass on 2022\/3\/8.\n\/\/\n#include <iostream>\nusing namespace std;\ntemplate <typename T>\nstruct B{\n T b;\n B():b(2){}\n virtual void print(){\n cout<<b<<endl;\n }\n};\n\ntemplate <typename T>\nstruct A:public B<T>{\n T a;\n A():a(1){}\n void print() override{\n cout<<a<<endl;\n }\n\n};\nint main(){\n auto p = new A<double>();\n p->print();\n return 0;\n}\n\n<\/code><\/pre>\n\n\n\n\u4ee5\u4e0a\u4ee3\u7801\u662f\u53ef\u4ee5\u6b63\u786e\u8fd0\u884c\u7684<\/p>\n\n\n\n
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\/\/\n\/\/ Created by blacksungrass on 2022\/3\/8.\n\/\/\n\n#include <iostream>\nusing namespace std;\n\nstruct B{\n template<typename T>\n virtual void print(){\n cout<<\"i am B\"<<endl;\n }\n};\nstruct A:public B{\n template<typename T>\n virtual void print() override{\n cout<<\"i am A\"<<endl;\n }\n};\nint main(){\n B* p = new A();\n p->print<>();\n return 0;\n}<\/code><\/pre>\n\n\n\n\u8fd9\u4e2a\u7f16\u8bd1\u7684\u8bdd\u5c31\u4f1a\u62a5\u9519\uff1aerror C2898: \u201cvoid B::print(void)\u201d: \u6210\u5458\u51fd\u6570\u6a21\u677f\u4e0d\u80fd\u662f\u865a\u62df\u7684<\/p>\n\n\n\n
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\u53c2\u8003\uff1ahttps:\/\/github.com\/isocpp\/CppCoreGuidelines\/blob\/master\/CppCoreGuidelines.md#t83-do-not-declare-a-member-function-template-virtual<\/p>\n\n\n\n
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