What are preprocessor directives in C with example
Lines in your program that begin with # denote preprocessing directives. The # is followed by an identifier that is the directive name, such as #define for the directive that defines a macro. Whitespace is permitted before and after the #.
What is preprocessor directive explain
The effect of each preprocessor directive is a change to the text, and the outcome is a transformation of the text that does not contain the directives or comments. Preprocessor directives are lines of the source file where the first non-whitespace character is #, distinguishing them from other lines of text.
What is a preprocessor directive in C programming language
The preprocessor will handle directives that are inserted into the C source code; these directives allow for additional operations to be made on the C source code before it is converted into object code.
What are pre processor directive explain different type of pre processor directive with example
C – Preprocessors
|Sr.No.||Directive & Description|
|1||#define Substitutes a preprocessor macro.|
|2||#include Inserts a particular header from another file.|
|3||#undef Undefines a preprocessor macro.|
|4||#ifdef Returns true if this macro is defined.|
What is preprocessor and its types
The C preprocessor does exactly what its name suggests: it processes our source code before it is passed to the compiler. The preprocessor offers a number of features, each of which is referred to as a preprocessor directive and begins with the # symbol.
What is preprocessor directive Mcq
The #ifdef preprocessor directive is used to determine whether or not a specific identifier is currently defined. If it is, the statements that follow this directive are executed until the #endif preprocessor directive is encountered.
What is meant by preprocessor
The output is said to be a preprocessed form of the input data, which is frequently used by some subsequent programs like compilers. In computer science, a preprocessor (or precompiler) is a program that processes its input data to produce output that is used as input to another program.
What is preprocessor directives and header file
Header files contain a collection of declarations, frequently for functions and types (and occasionally variables) found in a library. However, a header is not a library. Preprocessor directives appear in source code. There are many different directives. One of them is #include, which is used to include a header file.Dec 19, 2013
What is the example of link section
It gives instructions to the compiler to link function from the system library. For example, the definition section defines all the symbolic constants.
|fopen()||All file handling functions are defined in stdio.h header file.|
|fclose()||Closes an opened file.|
What are preprocessor directives in C language
The preprocessor will process directives that are inserted into the C source code, allowing for additional operations to be made on the C source code before it is compiled into object code.
What is preprocessor with example
Preprocessing is a phase of translation that occurs before compilation in some computer languages, such as C and PL/I. It can also include macro processing, file inclusion, and language extensions. The preprocessing of source code is a common example from computer programming.
What is preprocessor directive and its types
Preprocessor directives are a subset of macros that occur prior to compilation and can be thought of as a set of instructions for the compiler to carry out the actual compilation.
What is the use of preprocessor directives
Preprocessor directives, like #define and #ifdef, are frequently used to make source programs simple to change and simple to compile in various execution environments. Directives in the source file instruct the preprocessor to take particular actions.
What is #if and #endif in C
When the #endif directive is encountered in a program, it determines whether the preprocessing of #if, #ifdef, or #ifndef has been successfully completed. The #endif directive is used to define the following directives: #if, #ifdef, and #ifndef.
What is #include directive Mcq
Explanation: Are statements are typically placed at the top of a program, and the #include directive instructs the preprocessor to grab the text of a file and place it directly into the current file.
Which is not a preprocessor directive in C
Sanfoundry Global Education & Learning Series – C Programming Language explanation: #ifelse is not a preprocessor directive; #error, #pragma, and #if are. There is a preprocessor directive, #elif, which serves the purpose of else-if.
What is #if in C
Description: The #if directive in the C programming language enables conditional compilation. The preprocessor assesses an expression provided with the #if directive to decide whether the following code should be compiled or not.
What are preprocessor operators
Four preprocessor-specific operators are used in the context of the #define directive.
In this article.
|Token-pasting operator (##)||Allows tokens used as actual arguments to be concatenated to form other tokens|
|defined operator||Simplifies the writing of compound expressions in certain macro directives|