c++ - 获取错误 : control reaches end of non-void function dont know why

Question

我一直收到以下错误，我不知道哪里出了问题

cc1plus: warnings being treated as errors
scene.cpp: In member function ‘Image* Scene::getpicture(int) const’:
scene.cpp:179: error: control reaches end of non-void function

这是错误所在的代码部分:

Image* Scene::getpicture(int index) const {

    if(index<0 || index >maximum)
        cout << "invalid index" << endl;
    else {
        return images[index]; 
    }
}

Answer 1

如果代码没有进入else 语句，则不会返回任何内容。因此，您需要在末尾或输入 if 语句时插入一个 return。