Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Computer Programming Articles
Page 14 of 18
What is binding and binding time in compiler design?
The binding of a program element to a specific characteristic or property is the choice of the property from a set of possible properties. The time during program organization or processing when this choice is made is defined as the binding time of that property for that element. There are multiple varieties of bindings in programming languages, and a variety of binding times. It can also involve within the terms of binding and binding time the properties of program elements that are constant either by the definition of the language or its execution.Types of Binding TimesThere are two types of ...
Read MoreWhat are the effects of language design in the programming environment?
Programming environments have affected language design generally in two major areas such as features promoting separate compilation and assembly of a program from components, and features aiding program testing and debugging.Separate compilation − In the structure of any huge program it is regularly desirable to have multiple programmers or programming group design, code, and test elements of the program before the last assembly of all the elements into a complete program. This needed the language to be structured so that single subprograms or other elements can be separately compiled and implemented, without the other element, and thus later combined without ...
Read MoreWhat is Type Conversion?
The type conversion is an operation that takes a data object of one type and creates the equivalent data objects of multiple types. The signature of a type conversion operation is given as conversion_op :type1→type2There are two types of type conversions which are as follows −Implicit type conversion (Coercions) − The programming languages that enable mixed-mode expressions should describe conventions for implicit operand type conversions.Coercion is defined as an automatic conversion between types. For example in Pascal, if the operands for the addition operation are of integer type and other real types, ...
Read MoreWhat is Static Type Checking?
Type checking is the activity of providing that the operands of an operator are of compatible types. A compatible type is one that is legal for the operator or is enabled under language rules to be implicitly modified by compiler-generated code to a legal type. This automatic conversion is known as coercion. A type error is the application of an operator to an operand of an improper type. It can illustrate the concept of type checking considers the following statement.c:=a + 3 * b;Here b should be of a type that allows multiplication by an integer. Similarly, the operands for ...
Read MoreWhat is the difference between Definitions and Declarations in Compiler design?
DefinitionIt recognizes the code or data related to the name of the variable, function, class, etc. The definition is essentially needed by the compiler to designate the storage area for the declared entity. When a variable is defined it has an amount of memory that includes multiple bytes for that variable.A function definition generates code for the function. It can define a program element only once in a program because the definition is a unique requirement of a program element. The relationship between declaration and definition can be one-to-many.DeclarationIt can determine the names of the program including the name of ...
Read MoreWhat is Compiler Passes?
The whole source program can be processed several times before generating the assembly/machine code.Pass − One complete scan or processing of the source program. Various phases can be arranged into one pass. Lexical, syntax & semantic analysis are often grouped in a single pass. Each pass reads the source program and writes output into an intermediate file, which then can be read by subsequent passes, i.e., the output of one pass will be input to the next pass.Single-Pass Compiler − In a single-pass compiler, when a line source is processed it is scanned and the tokens are extracted. Then the ...
Read MoreShow that the whole compilation process for statement A = B * C + 20, where A, B, C are of real types
Solution Symbol TableS.NO.Variable NameVariable Type200AFloat204BFloat208CFloatNow, we will see how we can perform the compiler phase at each level and how it works.Lexical AnalysisThis is the first step that works as an integration between the compiler and the source language code. It reads the source code one character at a time and designs a source code into a series of atomic units known as tokens.In this phase, we will see how we can tokenize the expression.A → Identifier: (id, 1)= → Operator: AssignmentB → Identifier: (id, 2)* → Operator: MultiplicationC → Identifier: ...
Read MoreWhat are Declarations?
A declaration in a program refers to a statement that provides the data about the name and type of data objects to the programming language translators. For example, consider the following C declaration −int a, b;This declaration provides the programming language translator with the information that a and b are the data objects of type integer that are needed during the execution of the subprogram. The declaration also defines the binding of the data objects to the name a and b during their lifetimes.Purposes of DeclarationThe various purposes of declarations are as follows −Type Checking − The declaration allows the ...
Read MoreWhat is Elementary Data Types?
An elementary data object includes a single data value and a class of elementary data objects with a set of operations for creating and manipulating them is represented as an elementary data type. An example of elementary data types such as integer, real, character, Boolean, pointer, etc.The basic components of elementary data types are as follows −Attributes − Attributes refers to characteristics or group of characteristics that distinguish one data object from others. The main attributes of a data object are its name, associated address, and data type. The following declaration in C.int a;It specifies that a data object named ...
Read MoreWhat are the types of Compilers?
A compiler is a computer program that changes source code written in a high-level language into low-level machine language. It translates the code written in one programming language to some other language without modifying the definition of the code. The compiler also produces the end code efficient which is optimized for execution time and memory space.There are various types of compilers which are as follows −Traditional Compilers(C, C++, and Pascal) − These compilers transform a source program in an HLL into its similar in native machine program or object program.Interpreters (LISP, SNOBOL, and Java1.0) − These Compilers first convert Source ...
Read More