Yahoo Web Search

Search results

1. • • An uninitialized data segment is also known as bss (b​lock started by symbol). The program loaded allocates memory for this segment when it loads. Every data in bss is initialized to arithmetic 0 and pointers to null pointer by the kernel before the C program executes.
     www.scaler.com › topics › c

     Memory Layout in C - Scaler Topics

2. Top results related to what is the b-segment function in c

   • What is the correct syntax for calling this C function in C#? The function uses pointers and arrays

     Top Answer

     Answered Mar 05, 2016 · 1 votes

     You are nearly there. The final argument is the problem I think. Try like this:

     [DllImport("MTFCameraTester.dll", CallingConvention = CallingConvention.Cdecl)]public extern static MTFCT_RETURN MTFCTGetMTF( uint nID, int orientation, [Out] double[] theArray, ref int vectorSize);....double[] myArray = new double[1024];int vectorSize = myArray.Length;MTFCT_RETURN returnEnum = MTFCTGetMTF(0, 0, myArray, ref vectorSize);

     Check all answers on Stack Overflow

     1/5

   • What is the difference between virtual function and pure virtual function in C++ in when both not defined in base class?

     Top Answer

     Answered Mar 12, 2016 · 4 votes

     So in both situation, derived class must define the display function

     Incorrect. Only pure virtual functions must be overridden by a derived class in order for that derived class to be concrete.

     So why should we need pure virtual function?

     To specify that a type is abstract, which prevents it's instantiation.

     What is the difference between virtual function and pure virtual function in C++ in when both not defined in base class?

     A pure virtual function is something that makes a class abstract, as I mentioned.

     By declaring a function, you promise that there will be a definition for it. If there is no definition, then the program is ill formed. Pure virtual functions are exceptions in that it's not mandatory to define them (but you may). So in short, a non pure virtual without a definition is a bug.

     Check all answers on Stack Overflow

     2/5

   • What is the purpose of the seed in the srand function in C?

     Top Answer

     Answered Aug 22, 2018 · 3 votes

     The purpose of srand and the seed passed to it is to give you control over the sequence generated by rand.

     srand initializes the data used by rand, so it determines what the sequence of numbers generated by rand is. You can use this to choose whether to generate a new sequence (one you have not generated previously) or to repeat an old sequence (one you generated previously).

     For example, suppose you have a simulation of some sort, and random numbers are desired to select some inputs to this simulation, such as when customers arrive or what particles enter the system. For this, you can simply use rand repeatedly to generate numbers. When the simulation is done, you might want to run it again to see how the simulation varies due to effectively random changes in its input. However, if you run the simulation program again, it will behave exactly the same way, because, if srand is not called, rand always produces exactly the same sequence.

     So, to generate a different sequence each time, a program may call srand and pass it a different seed. Often, the current time, as returned by the standard time routine, is used as a seed. However, any method of choosing a different value in different runs of the program will serve this purpose. (Note that time(NULL) commonly returns a number of seconds, so executing a program that uses srand(time(NULL)) twice in quick succession will result in the same sequence of numbers being used if both executions of the program start within the same second.)

     It does not matter which value is passed for the seed, just that it is different from other instances. The reason it does not matter is that a good random number generator uses complicated and well-designed functions to convert the seed into the state of the random number generator and to calculate the generated numbers, and this design makes it difficult for a choice of seed to have any deliberate effect on the generated numbers.

     On the other hand, sometimes you want to repeat a sequence. Perhaps one run of the simulation did something interesting, and you want to study it in more detail. Or you want to provide the program to colleagues along with all the data needed to reproduce your results. Or a program has a bug that only manifests sometimes, so you need to exactly repeat execution while debugging. In these cases, you would pass the same seed to srand in each execution in order to reproduce the same sequence of generated numbers.

     In programs where I use a varying seed, as with time(NULL), I have the program write the seed it is using to output, so that, if the user later desires to run with the same sequence, they can pass that seed to the program with a command-line switch (also built into the program) specifying to use that seed.

     Check all answers on Stack Overflow

     3/5

   • What is the difference between delegate in c# and function pointer in c++?

     Top Answer

     Answered Nov 09, 2014 · 36 votes

     A delegate in C# is a type-safe function pointer with a built in iterator.

     It's guaranteed to point to a valid function with the specified signature (unlike C where pointers can be cast to point to who knows what). It also supports the concept of iterating through multiple bound functions.

     In C#, delegates are multi-cast meaning they can iterate through multiple functions. For example:

     class Program{ delegate void Foo(); static void Main(string[] args) { Foo myDelegate = One; myDelegate += Two; myDelegate(); // Will call One then Two } static void One() { Console.WriteLine("In one.."); } static void Two() { Console.WriteLine("In two.."); }}

     Check all answers on Stack Overflow

     4/5

   • What is the function in C returns the current directory?

     Top Answer

     Answered Dec 13, 2010 · 11 votes

     The POSIX standard is getcwd(), which stands for "get current working directory".

     Check all answers on Stack Overflow

     5/5

   Show moreShow less

3. People also ask

   How many segments are there in C program executable?

   • The C Program executable already contains some of the segments, and some are built dynamically at runtime. First Let’s Discuss each segment of the Memory Layout in detail: The Static Memory layout consists of three segments, Text/Code segment, Initialized, and Uninitialized (bss) Data Segment.

   Memory Layout of a C Program - Hack The Developer

   hackthedeveloper.com/memory-layout-c-program/

   See all results for this question

   What is the size of a data segment in C?

   • Previously the size of the data segment was 544 bytes and after initializing global variables it increased to 580 bytes. When a C program does not initialize global and static variables with a value, the compiler allocates space in the Uninitialized Data Segment, also known as the “bss” segment.

   Memory Layout of a C Program - Hack The Developer

   hackthedeveloper.com/memory-layout-c-program/

   See all results for this question

   What is the function of a segment in a program?

   • This segment is responsible for the program's actual functionality and execution flow. Example 1: It explores various types of variables and their memory allocation across different scopes.

   Understanding Memory Layout: Stack, Heap, BSS, Data, and Text Segme…

   www.linkedin.com/pulse/understanding-memory-layout-stack-heap-bss-data-text-segments-shah

   See all results for this question

   What is a text segment in C?

   • As a memory region, a text segment may be placed below the heap or stack in order to prevent heaps and stack overflows from overwriting it. Usually, the text segment is sharable so that only a single copy needs to be in memory for frequently executed programs, such as text editors, the C compiler, the shells, and so on.

   Memory Layout of C Programs - GeeksforGeeks

   www.geeksforgeeks.org/memory-layout-of-c-program/

   See all results for this question

4. www.geeksforgeeks.org › memory-layout-of-c-programMemory Layout of C Programs - GeeksforGeeks

   www.geeksforgeeks.org › memory-layout-of-c-program

   • Cached

   Aug 24, 2022 · 3. Uninitialized Data Segment: Uninitialized data segment often called the “bss” segment, named after an ancient assembler operator that stood for “block started by symbol.” Data in this segment is initialized by the kernel to arithmetic 0 before the program starts executing uninitialized data starts at the end of the data segment and ...

   • Video Duration: 5 min

5. www.scaler.com › topics › cMemory Layout in C - Scaler Topics

   www.scaler.com › topics › c

   • Cached

   Feb 27, 2022 · An uninitialized data segment is also known as bss (b lock started by symbol). The program loaded allocates memory for this segment when it loads. Every data in bss is initialized to arithmetic 0 and pointers to null pointer by the kernel before the C program executes.

6. stackoverflow.com › questions › 1395591c - What exactly is the base pointer and stack pointer? To ...

   stackoverflow.com › questions › 1395591

   • Cached

   What exactly is the base pointer and stack pointer? To what do they point? Asked 14 years, 8 months ago. Modified 6 months ago. Viewed 265k times. 284. Using this example coming from Wikipedia, in which DrawSquare() calls DrawLine(): (Note that this diagram has high addresses at the bottom and low addresses at the top.)

   Code sample

   push ebp ; Preserve current frame pointer

   mov ebp, esp ; Create new frame pointer pointing to current stack top

   sub esp, 20 ; allocate 20 bytes worth of locals on stack.

   See more on stackoverflow

7. Videos

   • 

     32:31

     youtube.com

     Circles, Angle Measures, Arcs, Central & Inscribed Angles, Tangents, Secants & Chords - Geometry

     Jan 5, 2018

     1.1M Views

   • 

     21:52

     youtube.com

     Trigonometry For Beginners!

     Jul 25, 2017

     6M Views

   • 

     4:40

     youtube.com

     Finding a point part way between two points | Analytic geometry | Geometry | Khan Academy

     Dec 11, 2013

     284.3K Views

   View all

8. www.cs-fundamentals.com › c-programming › memoryMemory Layout of C Program. Code Data BSS Stack Heap Segments

   www.cs-fundamentals.com › c-programming › memory

   • Cached

   • Memory Layout of C Program
   • Code and Data Segments
   • Text Or Code Segment
   • Data Segments
   • Check Size of Code, Data, and .bss Segments
   • Last Word

   Before talking of memory layout of a C program and its various segments to store data and code instructions we should first understand that a compiler driver (that invokes the language preprocessor, compiler, assembler, and linker, as needed on behalf of the user) can generate three types of object files depending upon the options supplied to the c...

   See full list on cs-fundamentals.com

   However, the actual layout of a program's in-memory image is left entirely up to the operating system, and often the program itself as well. This article focus on the concepts of code and data segments of a program and does not take any specific platform into account. For a running program both the machine instructions (program code) and data are s...

   See full list on cs-fundamentals.com

   Code segment, also known as text segmentcontains machine code of the compiled program. The text segment of an executable object file is often read-only segment that prevents a program from being accidentally modified.

   See full list on cs-fundamentals.com

   Data segmentstores program data. This data could be in form of initialized or uninitialized variables, and it could be local or global. Data segment is further divided into four sub-data segments (initialized data segment, uninitialized or .bss data segment, stack, and heap) to store variables depending upon if they are local or global, and initial...

   See full list on cs-fundamentals.com

   The sizecommand, a GNU utility, reports the sizes (in bytes) of the text, data, .bss segments, and total size for each of the object or archive files in its argument. By default, one line of output is generated for each object file or each module in an archive. For example, see the following C program and the size of its object file. For the above ...

   See full list on cs-fundamentals.com

   In this tutorial we talked of memory layout of a C program, and its various segments (text or code segment, data, .bss segments, stack and heap segments). Hope you have enjoyed reading this article. Please do write usif you have any suggestion/comment or come across any error on this page. Thanks for reading!

   See full list on cs-fundamentals.com

9. dev.to › alfielytorres › the-memory-layout-explainedThe Memory Layout Explained - DEV Community

   dev.to › alfielytorres › the-memory-layout-explained

   • Cached

   Jul 5, 2020 · The memory model has 5 segments and are responsible for holding memory. Stack Segment — function local variables, arguments, context. Heap Segment: dynamic program data (e.g., malloc) Block Started by Symbol segment: uninitialized global and static variables. Data Segment: initialised global and static variables.

10. www.linkedin.com › pulse › understanding-memoryUnderstanding Memory Layout: Stack, Heap, BSS ... - LinkedIn

    www.linkedin.com › pulse › understanding-memory

    Aug 9, 2023 · BSS (Block Started by Symbol) Segment: The BSS segment contains uninitialized global and static variables. These variables are initialized to zero or null values before the program begins...

11. hackthedeveloper.com › memory-layout-c-programMemory Layout of a C Program - Hack The Developer

    hackthedeveloper.com › memory-layout-c-program

    • Cached

    Nov 16, 2020 · Uninitialized Data Segment (BSS) Initialized Data Segment. Text/Code Segment. Memory Layout. The above layout segments can be broadly classified into two: Static Memory Layout – Text/Code, Data Segments. Dynamic Memory Layout – Stack & Heap. The C Program executable already contains some of the segments, and some are built dynamically at runtime.