1304 questions
static { ...}I saw this code. I don't know what this is at all, and it doesn't make errors and compiles well.What does the 'static' block mean?
Is there a standard for C++11/C++/C to find out if a file exists or not?I want to check if the file exists before I open it.What should I do to make an annotation part from the code below?inline bool ...
Why is the pointer so hard?It's hard to use a normal pointer. A function pointer?How do I turn over the factor?Please tell me how to use it, not too difficult ㅜ
I know that sizeof() returnsWhat else is there?Is it a data type?for(i = 0; i < some_size; i++)When writing these repetitive statements, i is int? size_t? Which one should I write?
In C, when saving a string,There are two ways together. What's the difference between these two?I want to know what actually happens on memory when I compile, when I run.
const char *sql_query = SELECT statuses.word_id FROM lang1_words, statuses WHERE statuses.word_id = lang1_words.word_id ORDER BY lang1_words.word ASC;Very long queries together const char *sql_query =...
I want to initialize the same value from beginning to end when declaring an array.Now int myarr[30];for(i=0; i<30; i++) myarr[i] = 3;I'm doing a for statement like this, but not memset()myarr[all] ...
As far as I know, the compiler optimizes power(a,2) to a*apow(a,6) does not optimize, but calls the library function pow().The C++ Intel Compiler optimizes you to 6Why does the GCC C compiler optimize...
How can I declare and initialize the structure in a different place?For example, in this code,typedef struct MY_TYPE { boolean flag; short int value; double stuff;} } MY_TYPE;void function(void) { MY_...
0.0039215689 is used a lot in the graphic header fileWhat's the point?Why do you always write 0.0039215689 without setting it to const?If you look at the first code on Google (here )void RDP_G_SETFOGC...
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