44 lines
791 B
C++
44 lines
791 B
C++
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// explicit 关键字(禁止隐式转换)
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#include <iostream>
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using namespace std;
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class Person
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{
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private:
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int age;
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string name;
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public:
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Person(const char *name, int age = 18)
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{
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this->name = name;
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this->age = age;
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}
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// explicit 使得不存在从 "int" 转换到 "Person" 的适当构造函数
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explicit Person(int age) // 进制 Person p = 值
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{
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this->age = age;
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this->name = "disen";
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}
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public:
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void show()
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{
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cout << name << ", " << age << endl;
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}
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};
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int main()
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{
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Person p1 = "jack";
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Person p2 = Person("doken", 9);
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Person p3 = Person(1);
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// Person p4 = 2; // 不存在从 "int" 转换到 "Person" 的适当构造函数
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p1.show();
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p2.show();
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p3.show();
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return 0;
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}
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