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勘误 #60

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shiyiyuedeyu opened this issue May 7, 2024 · 0 comments

shiyiyuedeyu commented May 7, 2024 •

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problems/如果A是某一个类的指针，那么在它等于nullptr的情况下能直接调用里面的A对应类里面的public函数吗.md
示例：
`#include

class A {
public:
void show() {
std::cout << "show!" << std::endl;
}
};

int main() {
A* a_ptr;
a_ptr->show();

return 0;
}`
实际调用的函数签名是A::show(this)，相当于this地址未确定，但成员函数实际不需要this地址，这段代码依旧是可以正常执行的。

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