继续失踪";" 在"."之前 错误

Question

我在这里有一个类的头规范:

#ifndef FIXEDWINGAIRCRAFT_H
#define FIXEDWINGAIRCRAFT_H

#include <iostream>

class FixedWingAircraft
{
  private:
    struct Airframe
    {
        double weight;
    };
    struct Engine
    {
        double weight;
    double fuel;
    };
    struct Radio
    {
        bool state;
    double weight;
    };
    struct Pilot
    {
        int proficiency;
    double weight;
    };
    public:
    void setAirframe(double w)
    {
        Airframe.weight = w;
    }
    void setEngine(double w, double f)
    {
        Engine.weight = w;
    Engine.fuel = f;
    }
    void setRadio(bool s, double w)
    {
        Radio.state = s;
    Radio.weight = w;
    }
    void setPilot(int p, double w)
    {
        Pilot.proficiency = p;
    Pilot.weight = w;
    }
};
#endif

但是当我尝试编译时,我遇到了大量的语法错误:

error C2143: syntax error : missing ';' before '.'

我假设这些是指setter函数,但我不明白为什么会导致问题.我错过了什么？

Answer 1

Airframe.weight = w;而所有类似的人都是非法的.Airframe是一个类,而不是一个对象.您可能希望将该类型的对象作为成员并设置其属性.

你可以替换

struct Airframe
{
    double weight;
};

同

struct Airframe
{
    double weight;
} airframe;

这将为您提供FixedWingAircraft可以访问的类型的成员airframe.