Question

如何通过在线程中调用方法来更改#include <iostream> #include<thread> using namespace std; class Airplane{ public: int vel = 0; Airplane *air1; void change_av1(){ air1->vel = 3; cout << air1->vel << endl; system("pause"); } }; void myFunction(); int main(){ Airplane *air1=new Airplane(); myFunction(); return 0; } void myFunction(){ Airplane *object=new Airplane(); thread first(&Airplane::change_av1, object); // meu método dentro da thread first.join(); }的属性？ C ++在此代码中，编译器是正常的，但在运行时会生成致命错误。

Answer 1

您的代码全错了。它看起来应该更像这样：

#include <iostream>
#include <thread>
using namespace std;

class Airplane{
public:
    int vel = 0;

    void change_vel(){
        vel = 3;
        cout << vel << endl;
    }
};

void myFunction();

int main(){
    myFunction();
    system("pause");
    return 0;
}

void myFunction(){
    Airplane *object = new Airplane;
    thread first(&Airplane::change_vel, object);
    first.join();
    delete object;
}

通过函数调用C ++中的线程来更改对象属性

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