Linker Error : Undefined symbol _main in module c0.ASM

Code:
#include<iostream.h>
#include<conio.h>
#include<iomanip.h>
#include<fstream.h>
#include<graphics.h>
#include<dos.h>
#include<string.h>
#include<stdio.h>
#include <time.h>
fstream inoutfile;
int main();
//Menu Global Item
#define pixTOrc(x) (8*(x-1))  //convert pixel […]

Original post by Shubhang Agarwa