What is wrong with my code?

#include <iostream>
#include <Windows.h>

using namespace std;
DWORD Ammo = 0x31FC;

int MyAmmo;
int main{
	HWND hwnd = FindWindowA(NULL, "Counter-Strike: Global Offensive");
	if (hwnd == NULL) {
	cout << "Process not found" << endl;
	sleep(4000);
	exit(-1);
	}
	else {
	DWORD ProcId;
	GetWindowThreadProcessId(hwnd, &procId);
	HANDLE handle = OpenProcess(PROCESS_VM_READ, FALSE, ProcId);

	if (procId == NULL) {
		cout << "process not obtained" << endl;
		sleep(4000);
		exit(-1);
	}
	else {
		while (true) {
			ReadProcessMemory(handle, (LPVOID)Ammo, &MyAmmo, sizeof(MyAmmo), NULL);
			cout << MyAmmo;
			Sleep(100);
			}
		}
	}
}