相关疑难解决方法(0)

我试图重载一些运算符:

/* Typedef is required for operators */
typedef int Colour;

/* Operators */
Colour operator+(Colour colour1, Colour colour2);
Colour operator-(Colour colour1, Colour colour2);
Colour operator*(Colour colour1, Colour colour2);
Colour operator/(Colour colour1, Colour colour2);

我为每次尝试重载都收到此错误:

expected '=', ',', ';', 'asm' or '__attribute__' before '+' token

关于运算符重载,我找不到任何好的文档.谷歌搜索结果导致使用类的C++教程.在C中没有类.谁能帮我？谢谢.