C++ 在函数声明中错误两种或多种数据类型
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C++ error two or more data types in declaration of function
提问by Dhiral Pandya
In a piece of code I am passing two parameters both of same type b2Vec2 *
在一段代码中，我传递了两个相同类型的参数 b2Vec2 *
void bool isVelocityAllowToCar(b2Vec2 *newVelocity, b2Vec2 *preVelocity);
When I build my project it showing me following error.
当我构建我的项目时，它显示了以下错误。
two or more data types in declaration of 'isVelocityAllowToCar'
What am I doing wrong?
我究竟做错了什么？
回答by Daniel Frey
The problem is the return type you specify. void boolis not valid, it's two types voidand bool. You just need to remove the voidand it should work:
问题在于您指定的返回类型。void bool无效，它有两种类型void和bool。你只需要删除它void，它应该可以工作：
bool isVelocityAllowToCar(b2Vec2 *newVelocity,b2Vec2 *preVelocity);
