Explain lexical substitution during macro expansion, Computer Engineering

Assignment Help:

Explain Lexical substitution during macro expansion ?

Lexical substitution is used to produce an assembly statement from a model statement. Model statements have 3 kinds of strings:

1. An ordinary string, that stands for itself.

2. The name of a formal parameter that is preceded via the character '&'.

3. The name of a preprocessor variable that is also preceded via the character '&'.

During lexical expansion, strings of kind 1 are retained without substitution. Strings of kinds 2 and 3 are replaced through the 'values' of preprocessor variables or the formal parameters. The value of a formal parameter is the consequent actual parameter string.


Related Discussions:- Explain lexical substitution during macro expansion

Define the components of a process precedence sequence, Define the componen...

Define the component of a process precedence sequence? Ans. Process name, sequence operator and also concurrency operator components are process precedence sequence.

Statistical technique, Ask qa survey was conducted among the residents of p...

Ask qa survey was conducted among the residents of pune city,it suburbs and the pune cantonment area.the following three pie diagrams show their respective preferences for living i

What are the various components in sequence diagrams, ? Actor: Actor shows ...

? Actor: Actor shows an external user / end user who interact with the system. ? Object: Object is shown by one of components of the system. ? Unit: A unit is a subsystem, o

What are the four linq providers that .net framework ships, 1. LINQ to Obje...

1. LINQ to Objects - Implements a LINQ query against a collection of objects 2. LINQ to XML - Implements an XPATH query against XML documents 3. LINQ to SQL - Implements LINQ

What are subroutines, What are subroutines? Subroutines are program mo...

What are subroutines? Subroutines are program modules, which can be known  from other ABAP/4 programs or within the similar program.

What data structure is used by an operating system, What data structure is ...

What data structure is used by an operating system to keep track of process information? Explain A data structure termed as process control block (PCB ) is used by an operat

Design a 4:1 mux in verilog, Design a 4:1 mux in Verilog   Mult...

Design a 4:1 mux in Verilog   Multiple styles of coding. e.g. Using if-else statements if(sel_1 == 0 && sel_0 == 0) output = I0; else if(sel_1 == 0 && sel_0 ==

Computer systems principles, Your program should print the inverted map to ...

Your program should print the inverted map to the screen (using a format similar to the inverter project, but you will print out the url values instead of document IDs). You can pr

What will be the result of adding hexadecimal A6 to 3A, The result of addin...

The result of adding hexadecimal number A6 to 3A is ? Ans. The result will be E0.

Implementation of BUS, Q. Implementation of BUS Construction of a bus s...

Q. Implementation of BUS Construction of a bus system for four registers employing 4×1 multiplexers is displayed below. Every register has four bits which are numbered 0 throug

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd