Does Memory allocation in C is a machine dependent? [closed] - c

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Does Memory allocation in C is a machine dependent?
I want my program to be transferred from a UNIX system to another system without any problem.

As #mediocrevegetable1 said in the comments, as long as you use functions from the standard library, it should work. (But just make sure that you used an ANSI C compiler before, and to use an ANSI C compiler when compiling for another system. You can see Here a list of ANSI C compilers.)

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How to implement the printf function in risc-v? [closed]

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Here's the C representation of what I'm trying to do in RISC-V assembly:
printf ("x=%d\n", x);
https://godbolt.org/ is an interesting site. If you paste in c code, it can be transfered into others, such as RISC-V assembly. The sample c code is available from menie.org/georges/embedded/small_printf_source_code.html. It does work. Good luck.
Here is a very simple printf (actually only integers and strings and no advanced formatting)
https://godbolt.org/z/sgMVs7
It is not my code - it is tiny ptinf from the atolic studio. But it is a good base to implement something simple but more decent.

What is the special macro of buffer size in standard C library? [closed]

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I saw this special macro when I read a source code. If I remember correctly, it is defined in the standard library.
The name of this macro is related to the buffer size, and in my machine its implementation is 1024.
Now I want to use it to initialize the buffer but I forgot what it is called.
So is there any one who can help me make my code look more professional?
If I don't know what I am looking for specifically, how can I clearly say what I need?
Are you talking about BUFSIZ? It's a macro provided by <stdio.h> and it expands to the size of the buffer used by setbuf().
I'm not sure what use it has in your own code.

Can any program of C be written in R programming language? [closed]

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I want to know whether any program which is written using C programming language can be written using R programming language or not. I know that it is possible to call C code from R, but I want to know if I want to write every algorithm in R from scratch whether it is possible or not.
I want to know does R has all constructs required to implement all programs written in C lanuage?
Yes, both are Turing complete.

C: recognize variable type [closed]

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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.

What makes D a good language? [closed]

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My professor recommended I do my senior capstone in D. What can it be used for? What makes it good? He compared it to C/C++ and said it's better. Why?
This post just makes D less attractive to work with:
Why isn't D picking up?
Compared to C and C++, it is safer, meaning that it cannot create the same sorts of segmentation faults by accessing uninitialized or disallowed memory. It also wouldn't allow misunderstanding object types like C/C++ casts can do with pointers and explicit memory allocation and deallocation. This makes the language "cleaner" feeling in some sense.
Prior to C++ standard version 2008, D also supported better delegation. Nowadays C++ is pretty close to D delegation capabilities by providing perfect forwarding.
D delegation: http://www.docwiki.net/view.php?pageid=97
C++ perfect forwarding: https://www.justsoftwaresolutions.co.uk/cplusplus/rvalue_references_and_perfect_forwarding.html

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