bucky i did exactly what u said but i dont know y it showing "undefined reference to winmain@16" target="_blank">winmain@16"plsss help me

main.cpp

#include
#include "hello.h"
using namespace std;

int main()
{
hello bo;
return 0;
};

hello.h

#ifndef HELLO_H
#define HELLO_H
class hello
{
public:
hello();

};
#endif// HELLO_H

hello.cpp

#include "hello.h"
#include
using namespace std;

hello::hello()
{
cout