[C] C Programming Q & A - 03

yanglsw

Question :
What is a pragma?

Answers:

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)

#pragma O(2)

etc..

mjj_jjm2009

能翻成中文的吗?

tlstudy

学习来啦！！我是新手