将对象添加到C ++中的对象数组(Add Object to Array of Objects in C++)

将对象添加到C ++中的对象数组(Add Object to Array of Objects in C++)

有一个对象数组，并添加对象，我尝试以下方法：

Shape ShapeList[30]; void addShape(Shape s) { for(int i=0; i<30;i++) { if(ShapeList[i] != '\0') { i++;} else { ShapeList[i]=s; numShapes++; break; } } }

numShapes是一个整型变量，Shape是类， ShapeList是对象数组 。 但是编译器以这种方式给出错误，即不允许使用!=运算符。 那么我如何实现这个？

There is an array of objects and to add object to it i tries the following:

Shape ShapeList[30]; void addShape(Shape s) { for(int i=0; i<30;i++) { if(ShapeList[i] != '\0') { i++;} else { ShapeList[i]=s; numShapes++; break; } } }

numShapes is an integer variable, Shape is the class and ShapeList is the array of objects. But the compiler gives an error in this way that != operator is not allowed. So how can i implement this?

最满意答案

我认为你需要改变你的'容器'声明：

Shape *ShapeList[30]; void addShape(Shape *s) { for(int i=0; i<30;i++) { if(ShapeList[i]) { i++;} else { ShapeList[i]=s; numShapes++; break; } } }

并以这种方式调用addShape：

addShape(new Shape());

I think you need to change your 'container' declaration:

Shape *ShapeList[30]; void addShape(Shape *s) { for(int i=0; i<30;i++) { if(ShapeList[i]) { i++;} else { ShapeList[i]=s; numShapes++; break; } } }

and call addShape this way:

addShape(new Shape());