Problem with V C++

I have this program, if I run it under Dev-C++ it runs berfect, but if I try to run it under V c++ it gives me an error message.

this is the code

Code:

//project 5 Order status

#include<iostream.h>
#include<math.h>


float spools_orderd;
float spools_in_stock;
bool special_c = false;

void getData()
{

	char y;
	cout<<" Please enter the Number of spools orderd: " ;
	cin>> spools_orderd;

	cout<<" Please enter the Number of Spools in Stuck: " ;
	cin>> spools_in_stock;

	cout<<" IS there any special charge? (Y = yes): ";
	cin>>y;
	if ((y= 'Y')|| (y='y')){
		special_c = true;
	}
}

void display()
{
	float ready_spools_in_stock;
	float spools_in_back_order;
	float portion_ready;
	float total_s_and_h_charge;
	float total_charge;
	float special_charges =10;

	//geting the special charge if there is any
	if (special_c == true) {
		cout<<" Please enter the special shipping and handling charges (normaly it is $10) :" ;
  	    cin>> special_charges;
	}
	
	//calculating the spools in the order and sub it from the stock
	if ( spools_in_stock >= spools_orderd) {
		ready_spools_in_stock= spools_orderd;
		spools_in_stock = spools_in_stock - spools_orderd;
		spools_in_back_order = 0;
	}else {
		ready_spools_in_stock = spools_in_stock;
		spools_in_back_order = spools_orderd - spools_in_stock;
		spools_in_stock = 0;
	}

	//calculating the portion ready to ship.
	portion_ready = ready_spools_in_stock * 100;

	//calculating the shipping & handling charges
	total_s_and_h_charge = special_charges * ready_spools_in_stock;

	//calculating the total order ready to ship
	total_charge = total_s_and_h_charge + portion_ready;


	//displaying the resluts.
	cout<< " The Number of spools ready to ship in stock are: ";
	cout<< ready_spools_in_stock<< "spools"<<endl;

	cout<<" The Number of spools on back-order is:";
	cout<< spools_in_back_order<< endl;

	cout<<" Subtotal of the portion ready to ship : $ ";
	cout<< portion_ready<<endl;

	cout<< " The total shipping and handling charges on the portion ready to ship $";
	cout<< total_s_and_h_charge<<endl;

	cout<<" The total  of the order ready to ship is : $ ";
	cout<< total_charge<<endl;
	
}

int main()
{

	getData();
	display();

   return 0;
}

This is the error message:
*******
--------------------Configuration: p4 - Win32 Debug--------------------
Compiling...
4p4.cpp
Linking...
LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Debug/p4.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

p4.exe - 2 error(s), 0 warning(s)
**********************

Thank you for your help.

Create yourself a new project only this time choose 'console application'. Copy your code in and you should be fine. That message means the compiler is trying to create you a Win32 application, you picked the wrong setting when you made the project.

I hope that this is the problem,
let me try it.

that was the problem.

That is right,
thank you for your help

In addition, have a close look at this line:

if ((y= 'Y')|| (y='y')){

I don't think it works the way you intended it.