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I'd love to create some part dynamically. Would it be possible to use offsetof with string as a second argument? Something like:
offsetof( tic, "close.v");
Or can I convert char to member anyhow?
The offsetof construct is a compile time operation. It can't be used with anything that is generated dynamically.
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is there a way to obtain function's parameters, inside this function, without passing it. Like the func providing the function name. i'd like to obtain just name of parameters, not type.
search with google, found functions for line, function name and file name but nothing about parameters
The C standard does not provide any facility for this.
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I am working on one embedded project based on c language.
Can you explain me following declaration meaning:
#define FILE_APPVENDORPARAM APP_NAME"VENDOR"
Before the line you show, there must be another #define that defines APP_NAME, for example like this:
#define APP_NAME "SomeName"
Then this line:
#define FILE_APPVENDORPARAM APP_NAME"VENDOR"
defines FILE_APPVENDORPARAM as "SomeName""VENDOR" which is the same thing as "SomeNameVENDOR"
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I want to have some information about (#include)
in the beginning of my C program.
What does this library do?I have search before and found nothing.....
#include is a preprocessor directive, not a library. You can read below Wikipedia page about it.
https://en.wikipedia.org/wiki/Include_directive
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How to print a space between two strings using strcat() function in c language?
You can do something like this.
strcat(string1, " ");
strcat(string1, string2);
or, just in one line.
strcat(strcat(string1, " "),string2)
Both the snippets are actually same!
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I'm learning C. I wonder whether there is an instruction or command to recognize the type of the variable.
To be more practical: I have a program which works with integers, I want to show an error message if the user inserts a real number when running the program.
Hope you can help!
This is not part of the C standard, but GCC has the typeof keyword.
You have to be using the GCC compiler for it though.