如何传递类对象作为对另一个头文件功能的引用

Question

I have main.cpp

#include "Customer.h"
#include "Driver.h"

 int main(){
   Customer o_customer;        //Customer class object
   //ManageMenu is a Driver.h method
      ManageMenu( o_customer );   //calling method

  return 0;
}

My Driver.h is just a .h and .cpp file which does not have any class in it. What it does is handles all the screen display method, sample

#include "Customer.h"
void ManageMenu( Customer & customer );

and, here is the issue , I am not able to pass the object reference in this function and I also believe that it is valid too as it simply means that we are passing the reference to some function.

My Driver.cpp

#include "Driver.h"
void ManageMenu( Customer & customer ){
 //do something
   //calls the method of Customer's class
customer.AddDetails();

}

I am not able to pass the object, the error which I am getting in g++ is

error: variable or field 'ManageMenu' declared void
error: 'Customer' was not declared in this scope
        'customer' was not declared in this scope
 void ManageMenu( Customer & customer );

Please help me out and do explain me where I am doing the mistake. THANKS!!

Answer 1

在Driver.cpp中，您忘记添加

#include "Customer.h"