The flow control during macro expansion is _____________.

Explanation

A macro is a unit of specification for program generation through expansion. Macro consists of a name, a set of formal parameters, and a body of code. The use of a macro name with a set of actual parameters is replaced by some code generated from its body, this is called macro expansion. Two kinds of expansion ¤ Lexical expansion : Lexical expansion Semantic Expansion The flow of control during expansion The default flow of control during macro expansion is sequential. It starts with the statement following the macro prototype statement and ending with the statement preceding the MEND statement. A preprocessor statement can alter the flow of control during expansion such that some model statements are never visited during expansion is called conditional expansion. Same statement is repeatedly visited during expansion is called loops expansion