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C Language > Learn C Language > What is a pragma?
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What is a pragma?

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Professional Tutor with 15 years of experience.

In computer programming, a directive pragma is a language construct that specifies how a compiler should process its input. The ' #pragma ' directive is the method specified by the C standard for providing additional information to the compiler, beyond what is conveyed in the language itself. Three...
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In computer programming, a directive pragma is a language construct that specifies how a compiler should process its input. The ' #pragma ' directive is the method specified by the C standard for providing additional information to the compiler, beyond what is conveyed in the language itself. Three forms of this directive (commonly known as pragmas ) read less
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Microsoft Technology Consultant

it is one of the PreProcessor directives. Say for example" #pragma warn -rch " this statement suppress the unreachable code warning. Also we have startup, exit ,.....etc.,
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LearnHowToLearn, Expert In Programming Languages

Pragma is one of preprocessor directive to define program related options. Pragma is used to set structure memory packing options. Or setting entry point of program instead of main function.
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Matlab and comsol solution with 10 years of experience

The ‘#pragma’ directive is the method specified by the C standard for providing additional information to the compiler,
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Computer Programming Languages

This is a preprocessor directive that can be used to turn on or off certain features. It is of two types #pragma startup, #pragma exit and pragma warn. pragma startup allows us to specify functions called upon program startup. pragma exit allows us to specify functions called upon program exit. pragma...
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This is a preprocessor directive that can be used to turn on or off certain features. It is of two types #pragma startup, #pragma exit and pragma warn. pragma startup allows us to specify functions called upon program startup. pragma exit allows us to specify functions called upon program exit. pragma warn tells the computer to suppress any warning or not. many other #pragma style that can use to control compiler read less
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C and linux Expert

directive pragma is a language construct that specifies how a compiler should process its input
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COMPUTER GEEK

The ‘#pragma’ directive is the method specified by the C standard for providing additional information to the compiler, beyond what is conveyed in the language itself. Three forms of this directive (commonly known as pragmas) are specified by the 1999 C standard. A C compiler is free to attach any meaning...
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The ‘#pragma’ directive is the method specified by the C standard for providing additional information to the compiler, beyond what is conveyed in the language itself. Three forms of this directive (commonly known as pragmas) are specified by the 1999 C standard. A C compiler is free to attach any meaning it likes to other pragmas. Its syntax is _Pragma (string-literal), where string-literal can be either a normal or wide-character string literal. It is destringized, by replacing all ‘\\’ with a single ‘\’ and all ‘\"’ with a ‘"’. The result is then processed as if it had appeared as the right hand side of a ‘#pragma’ directive. For example, _Pragma ("GCC dependency \"parse.y\"") has the same effect as #pragma GCC dependency "parse.y". The same effect could be achieved using macros, for example #define DO_PRAGMA(x) _Pragma (#x) DO_PRAGMA (GCC dependency "parse.y") read less
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Software Engineer

In computer programming, a directive pragma (from "pragmatic") is a language construct that specifies how a compiler (or assembler or interpreter) should process its input.
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Science Expert, C & C++ Strong

The pragma directive is used to access compiler-specific preprocessor extensions. A common use of #pragma is the #pragma once directive, which asks the compiler to include a header file only a single time, no matter how many times it has been imported: #pragma once // header file code
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#pragma preprocessor directive allows each compiler to implement compiler-specific features that can be turned on and off with the #pragma statement. For instance, your compiler might support a feature called loop optimization. This feature can be invoked as a command-line option or as a #pragma directive....
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#pragma preprocessor directive allows each compiler to implement compiler-specific features that can be turned on and off with the #pragma statement. For instance, your compiler might support a feature called loop optimization. This feature can be invoked as a command-line option or as a #pragma directive. To implement this option using the #pragma directive, you would put the following line into your code: #pragma loop_opt(on) Conversely, you can turn off loop optimization by inserting the following line into your code: #pragma loop_opt(off) read less
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