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What is a pragma?
The #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)



  
Total Answers and Comments: 2 Last Update: August 02, 2009   
  
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March 29, 2007 02:46:56   #1  
soma praveen kumar        

RE: What is a pragma?

consider an example

struct a
{
char a;
int b;
char c;
};

sizeof struct a is 12 instead of 6

if we declare #pragma() Before struct a
Then size will Be 6.


 
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July 31, 2009 08:50:52   #2  
satheesh.reddy Member Since: July 2009   Contribution: 1    

RE: What is a pragma?
To pack one byte aligned
#pragma pack(1)

 
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