External environment refers to the major factors and forces outside the organization that have the potential to significantly affect the performance of an organization. External environment is divided into two parts i.e. mega environment or general environment and specific or task environment.
_tcscat is a C function, to concatenate C-style strings; CString is a class (which has built in concatenation via operator+), not a C-style string.
EXTERNAL NAME 'CS!xyz!source.cpp'; The C or C++ files can reside on the server or the client. The server will call for the transfer of client-resident files as needed to satisfy input requirements for the CREATE PROCEDURE or REPLACE PROCEDURE request. Source files must be encoded as ASCII (workstation) or EBCDIC (mainframe), no matter what the current session character set is.