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.
References are the third basic type of variable that C++ supports. References. A reference is a type of C++ variable that acts as an alias to another variable. References are declared by using an ampersand (&) between the reference type and the variable name: