如何修复此"argument of type incompatible with parameter"错误？

C++的新手，我为"学位"创建了一个枚举，其中包含 3 种类型"安全、网络、软件"，当子类尝试使用枚举时会返回类型错误。它专门寻找什么类型？

//Network Student Subclass
#include <string>
#include "degree.h"
#include "student.h"
class NetworkStudent : public Student //This class derives from Student
{
public:
    NetworkStudent();
    NetworkStudent(
        string student_id,
        string first_name,
        string last_name,
        string email,
        double age,
        double* days,
        degree type
    );
    degree getdegree();
    void setdegree(degree d);
    void print();
    ~NetworkStudent();
}; 
//Enum with 3 Types
#include <string>
//The three types of degrees available
enum degree {SECURITY,NETWORKING,SOFTWARE};
static const std::string degreeTypeStrings[] = { "SECURITY","NETWORKING", "SOFTWARE" };
//Network Student definition with invalid type error for NETWORKING
#include "student.h"
#include "networkStudent.h"
using std::cout;
NetworkStudent::NetworkStudent()
{
//Right here is where I get the error on NETWORKING
    setdegree(NETWORKING);
}

错误状态："度"类型的参数与"度"类型的参数不兼容。我认为学位是一个枚举，网络也是一个枚举。