I have an application (.exe) in VC++4.2 that uses static link libraries and dynamic link libraries (.lib ,.dll files) of another application also in VC++4.2.
Now I want to upgrade my main application to VC++5.0.
Do I have to upgrade the other application (whose static link libraries and dynamic link libraries the main application is using) also to VC++5.0??
If so, then why??