有没有任何方法可以通过只知道函数在指针中的地址来调用函数，比如说类型为“void*（*）（void*）”的指针，以及它的参数的数量和类型？
函数可以有任意数量的参数！
不，不是以任何便携或标准的方式。
但是，有一种标准的方法可以在函数之间传递可变数量的参数。请查看vsprintf。基本上，您需要一个接受va_list的函数版本。
粗略地说，没有。
在编写调用之前，您必须知道参数的数量，因此也必须知道类型。因此，您无法编写一行代码来准确地调用一个包含0个参数、1个参数或2个参数的函数。您可以始终提供2，并相信一切都会正常工作，但编译器会（合理地）发出警告。
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