#error You duffed this big time, mi''laddo...
#endif
Etc...
how does this work?
Can you use sizeof in an #if expression? And is #error portable?
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Author
can u? (sizeof)
is it? (error)
Abnormal behavior of abnormal brain makes me normal...
is it? (error)
Abnormal behavior of abnormal brain makes me normal...
quote:Original post by Kylotan
Can you use sizeof in an #if expression?
No.
quote:And is #error portable?
Yes.
quote:Original post by Kylotan
Can you use sizeof in an #if expression?
You can use templates to generate errors based on types or type properties and to do compile-time type manipulations in general.
see Loki, Boost...
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quote:Original post by Fruny
You can use templates to generate errors based on types or type properties and to do compile-time type manipulations in general.
Not in C you can''t.
quote:Original post by SabreMan
Not in C you can''t.
Nor in Fortran.
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quote:Original post by Fruny
Nor in Fortran.
Yes, but the SDL API isn''t written in Fortran.
quote:Original post by SabreMan
Yes, but the SDL API isn''t written in Fortran.
But Fortran uses the C preprocessor. Thus you can use #if.
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quote:Original post by Fruny
But Fortran uses the C preprocessor. Thus you can use #if.
Can use #if for what? You can''t use it to assert on the size of a type, since #if is a preprocessor macro, and preprocessing occurs before tokenising, which means you don''t have the size of the variable at that time. I can''t help but wonder what point you are trying to make.
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