Code:#include <windows.h> int_stdcall WinMain(HINSTANCE hinstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow) { MessageBox(0,"Hello!","Title",0); return 0; } Error show in the line "int_stdcall WinMain(HINSTANCE hinstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow)" Can anyone tell...why..??