LNK2019：未解析的外部符号_WinMain@16在函数中引用；int“cdecl调用主（无效）”命令；（？调用_main@@YAHXZ） 我是C++的新手，我在VisualStudio社区中没有得到这个错误。我已经尝试了很多事情，比如更改属性设置。类似于配置类型。还可以将子系统从控制台重写到Windows。在这一点上，我真的需要帮助。 这是我的头文件 #include <iostream> #include<string> using namespace std; #ifndef University_h #define University_h class University { public: University(); void setUniversityID(int); int getUniversityID(); void setCourseIdSectId(int, int); string getCourseIdSectId(); void setCredits(int); int getCredits(); void setDaysTime(int, string); string getDaysTime(); void setRoomID(int, int); string getRoomID(); void setMaxallotment(int); int getMaxallotment(); void setCampus(string); string getCampus(); void setCourseInstructor(string); string getCourseInstructor(); void setEnrollStudents(int); int getEnrollStudents(); void setCourseStatus(string); string getStatus(); private: int universityIDNumber; int DeptID; int sectID; int noOfCredits; int days; string time; int buildingID; int roomID; int maxEnrollment; string courseCampus; string courseInstructor; int noOfStudentsEnrolled; string courseStatus; }; #endif 你记得有什么讲座（或课本中的章节）告诉你所有C++程序都必须有主函数吗？< /p>

对于Windows GUI程序，这被称为

WinMain

---

除非您需要Windows GUI程序，否则您应该确保在Visual Studio中创建控制台类型的项目，并使用现有模板，以便Visual Studio为您创建一个

main

函数。

您还记得任何讲座（或教科书中的章节）吗告诉你所有C++程序都必须有<代码>主< /COD>函数？< /P> 对于Windows GUI程序，这被称为

WinMain

除非您需要Windows GUI程序，否则您应该确保在Visual Studio中创建控制台类型的项目，并使用现有模板，以便Visual Studio为您创建一个

main

函数。

更好的复制更好的复制

#include "University.h"

University::University()
{
    universityIDNumber = 0;
    DeptID = 0;
    sectID = 0;
    noOfCredits = 0;
    days = 0;
    time = "00:00";
    buildingID = 0;;
    roomID = 0;
    maxEnrollment = 0;
    courseCampus = "unknown";
}

void University::setUniversityID(int ID)
{
    universityIDNumber = ID;
}

int University::getUniversityID()
{
    return universityIDNumber;
}

void University::setCourseIdSectId(int deptId, int sId)
{
    DeptID = deptId;
    sectID = sId;
}

string University::getCourseIdSectId()
{
    return DeptID + " " + sectID;
}

void University::setCredits(int credits)
{
    noOfCredits = credits;
}

int University::getCredits()
{
    return noOfCredits;
}

void University::setDaysTime(int ds, string tm)
{
    days = ds;
    time = tm;
}

string University::getDaysTime()
{
    return days + " " + time;
}

void University::setRoomID(int buildId, int roomid)
{
    buildingID = buildId;
    roomID = roomid;
}

string University::getRoomID()
{
return buildingID + " " + roomID;
}

void University::setMaxallotment(int maxNums)
{
    maxEnrollment = maxNums;
}

int University::getMaxallotment()
{
    return maxEnrollment;
}

void University::setCampus(string campusName)
{
    courseCampus = campusName;
}

string University::getCampus()
{
    return courseCampus;
}

void University::setCourseInstructor(string name)
{
    courseInstructor = name;
}

string University::getCourseInstructor()
{
    return courseInstructor;
}

void University::setEnrollStudents(int enrollment)
{
    noOfStudentsEnrolled = enrollment;
}

int University::getEnrollStudents()
{
    return noOfStudentsEnrolled;
}

void University::setCourseStatus(string status)
{
    courseStatus = status;
}

string University::getStatus()
{
    return courseStatus;
}