C :: Correct Way To Initialize Typedef Structure In Compile Time (with Code)

Mar 6, 2015

Code:
typedef struct token
{
int tokenType; // what token is that
int tokenCode; // the code of a function if applicable
char *tokenString; // Source token
double tokenValue; // if token is a number

[Code] .....

I got several warnings and erros, is it possible to declare a table like that ? What's the correct way to declare it ?

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C/C++ :: Not Able To Initialize Structure Variable Inside Main Whose Structure Defined GL

Aug 27, 2013

I am trying to run a programme implementing a function with structures in c... which is:

#include<stdio.h>
#include<conio.h>
struct store  {
        char name[20];
        float price;    
        int quantity;

[Code] .....

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C++ :: Possibility Of Compile Time Calculation

May 13, 2013

Is there any possible way of calculating some values at compile time? I have the following code of genereting upto 2000000010 palindrome numbers.

Code:
#include <iostream>
#include <string>
#include <sstream>
#include <string.h>
#include <stdlib.h>

[Code] .....

As you see, I have taken input from the user just after calculating the whole palindromes. So cant we calculate this at compile time? because runtime of this program is extremely slow.

Another qs. I first tried to use array but It didnt allow 2*10^9 sized array. so what should I do whenever I need that size of array?

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C :: Can Get Memory Addresses From Compile Time?

Sep 1, 2013

My question is this: Is it possible to determine where functions are stored at compile time, so that at run time you can pass the memory address as a pointer to the interrupt handler so that it can directly call the function at memory location 'X'?

The newest project I'm working on would require to either somehow capture these addresses or to find a work-around so that instead of passing the pointer to the interrupt handler, the software would then need to be able to be non-interruptable.

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C++ :: Compile Time Unique Identifier?

Jan 18, 2012

Would there be anyway for the compiler, or the language, to provide a unique ID during compilation?

I've been using UUID generators, but I've always found the approach of copy pasting from a program to code to be kind of... limiting. If I want a random number, can't the compiler guarantee this for me?

It already does the same thing for anonymous namespaces, so...

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C++ :: Compile-time Loop Loops Wrong

Apr 10, 2013

Consider:
Code: template<unsigned int N>
class Test
{
private:

[Code]....

I just cannot understand why (clearly, we are calling <0, 0>, not <0, 8>). If I replace "N" with 8, it works as expected (at least for the beginning of the loop). I only tested on MSVC.

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C :: How To Exclude Function Dynamically On Compile Time

Mar 6, 2013

I am working on a project, where I have to be able to exclude some code fast and dynamicly at compiletime.

I got a scheduler running and actually I just want to remove some of the tasks from it - but at compile time so that the code wont take up space in my microcontroller.

I know that I can use macros like #ifdef #endif etc. But I think that method makes the code unreadable and complicated.

How to archive such functionality a more elegant way?

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C :: Library Of Functions - Getting Error At Compile Time

Nov 19, 2013

So I made a library for a whole bunch of functions and when i compile it, it says"Unresolved external symbol_(Name of function here) referenced in function main.

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C :: Possible To Create Char String At Compile Time?

Mar 28, 2014

I would like to have a program with a 5 mb string embedded in it kind of like this:

Code:

const char *c;
c = (const char*)"BEGIN_STRING_HERE, (5 MB of arbitrary values here)";

Is it possible to generate this string at compile time? Maybe with a macro? I'm trying to avoid a source file with a 5 mb string in it.

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C++ :: Set Array Size At Compile Time Through Constructor

Oct 22, 2013

How do I set the size of a member array via the class constructor if I know the size at compile time. I can do this with templates, see below, but this leads to code bloats, I think.

So one class declaration but objects with different array sizes.

Can't use constexpr.
Can't use STL.
Can't use new.

#include <iostream>
using namespace std;
template<int T>
class MyArray {
private:
int array[T];
public:
int getSize()

[Code] ....

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C++ :: Obtaining Operator From Compile-time Constant?

Nov 5, 2014

I want to generalize my productFunction below to a template family of functions where the template merely changes the * to + or whatever else operator I wish to use.

#include <iostream>
#include <functional>
#define show(variable) std::cout << #variable << " = " << variable << std::endl;
template <typename, typename...> struct ProductFunction;
template <typename RETURN_TYPE, typename FIRST, typename... REST>
struct ProductFunction<RETURN_TYPE, FIRST, REST...> : ProductFunction<RETURN_TYPE, REST...> {
const FIRST function;
using Base = ProductFunction<RETURN_TYPE, REST...>;

[code].....

How can I turn a template parameter into various operators? (apart from using switch statements that will reduce the performance and make the code really ugly) What kind of metatemplating method converts a compile-time constant to an operator?

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C++ :: Compile Source Code Into APK

Oct 14, 2014

I want to start developing Android apps in C++, but I do not know what I could use to compile the source code into an apk. I know that C++ is probably not the best choice for Android development, but I already know it and I do not want to learn Java.

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Visual C++ :: Compile Time Errors For OpensSSL In Project

Feb 4, 2014

I am trying to build a VC++ project in Visual Studio 2010. [URL] ....

This project has a dependency on openssl libraries. How can I successfully build this project? How to add third party libs/dlls in a project.

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C++ :: Code Won't Compile Even If Exactly Copied From EBook

Mar 23, 2013

I recently downloaded the ' code:blocks ' file. After I tried some code the compiler stated there was an error with
' #include<iostream> '.

Since I'm not a C++ programmer, right now, I'm confused. This was copied directly from the e-book I downloaded. After I uninstalled this program, I re downloaded it and now it comes up with a new error while opening Code-blocks.

This new error states ' Can't find compiler executable in your configured search path's for GNU GCC compiler '

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C :: Code With Two Functions Just Won't Return Correct Result

Sep 23, 2013

Each time I run it I get in correct result. I even tried running with code from from my book and it failed aswell. The code from the tutorial worked some how. BTW I use DevC++ as my compiler.

Code:

/*
Fail results
Fail results
Fail results
*/
#include <stdio.h>

[code]....

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C++ :: Linear Interpolation Code For X And Y Axis - Compile Errors

Oct 15, 2012

When trying to compile, I am receiving errors which I am assuming are pretty generic and common:

lin_interp.c:21: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
lin_interp.c:100: error: expected '{' at end of input

I am just trying to get the code to work for now. I have created a program similar to this which worked in C++, but the code isn't jiving in C.

Code:
// Lin_Interp.c : Defines the entry point for the console application.
//
#include "PACRXPlc.h" /* Include file applicable for all targets */
#include "ctkInitCBlock.h"
#include "string.h"
#include "math.h"
#include "stdlib.h"
#include <time.h>
#include <ctype.h>
#include <stdio.h>
/* Constants / #defines */
// Print-Out on console "XY LIMIT ARRAY" XYlim

[Code] .....

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C++ :: OpenGL Test Code With GLFW And GLEW Compile Errors

Jul 7, 2013

I'm learning OpenGL 3.2+ with GLFW and GLEW.

I'm learning it through this series of tutorials [URL] but when I run the first code:

#include <iostream>
#include <cstdlib>
#include <GL/glfw.h>
#define GLEW_STATIC
#include <GL/glew.h>
int main() {
glfwInit();
glewExperimental = GL_TRUE;

[code]....

(Then i have the glew.h that is about 17000 lines of code)

I get this errors:

c:archivos de programacodeblocksmingwin..libgccmingw324.7.1........includeGLglew.h|84|error: #error gl.h included before glew.h|
c:archivos de programacodeblocksmingwin..libgccmingw324.7.1........includeGLglew.h|1793|error: 'GLchar' does not name a type|
c:archivos de programacodeblocksmingwin..libgccmingw324.7.1........includeGLglew.h|1804|error: 'GLchar' has not been declared|

[code]....

What I'm doing wrong?

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C/C++ :: Compile And Execute CPP Code File With Visual Studio Command Line

Jan 23, 2013

this is my C# code

System.IO.Directory.SetCurrentDirectory
("C:/Users/fahime/Documents/Visual Studio 2010/WebSites/MyWebSite/UserFiles/ProblemAnswers/");
Process.Start("cmd.exe", @"/k ""C:Program Files (x86)Microsoft Visual Studio 10.0VCvcvarsall.bat"" x86");

[Code] .....

I want to compile my cpp code file with visual studio cmd

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C/C++ :: Conversion Of Time In Seconds Using Structure?

Sep 25, 2013

i create a structure called time. Its three members, all type int called hours, minutes, and seconds. This is in 12:59:59 format and i finally want to print out the total number of seconds represented by this time value.

long totalsecs = t1.hours*3600 + t1.minutes*60 + t1.seconds

i am using this formula but facing errors?

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C++ :: Why Can Initialize Array Nested In Structure Like Array

Feb 7, 2015

Example :
Code:
struct x {
int v[4];
};
const x test = { 0, 1, 2, 3 };

Why can I do this? How does the compiler know to write to this in the proper way? I get that v would be contiguous. Does that have something to do with it?

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C++ :: Code Structure For Game Menu / UI

Jun 23, 2014

How to structure something like Game Menu. I was googling and did not find anything useful. I am coding a little game and Menu part with few sections like START GAME - SELECT LEVEL - SETTINGS (SOUND, MUSIC AND VIBRATION ON/OF) - CREDITS - EXIT.

And just menu alone seems to have tones of code. I have my state machine working but it seems every subsection of the menu has its own state sort if and duplicate code.

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C/C++ :: How To Get Array Of Structure Code To Read Form A File

Dec 10, 2014

I tried to make the program read from a file text the first name or last name but o cant seem to get it. i tried alot of different ways. how can i get the array of structure code to read form a file?

#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
using namespace std;
const int NUM_STUDENTS = 17;
const int NUM_QUIZZES = 10;
const int NUM_EXAMS = 5;

[Code] .....

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C++ :: Identify End Of Function Code At Running Time

Apr 16, 2013

I want to implement some "debugger like" tool (very limited one, just identify at running time the current stack trace, and print messages from the user) on some code that the user wrote. what I get from the user is a function name (in the beginning of it's declaration), and when the user want to print some message he uses some print macro I should implement.

My target is printing the stack call, and all the messages that the user wrote, in the right place on the running place.

By what c++ feature can know on running time that a specific function code has ended??

Its easy to push a function to some vector when it called (since I get its name from the user), but when it ends and return to the function called it...

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C++ :: How To Add A Loop / User-defined Function And Array / Structure To Code

Apr 24, 2012

We had to write a "selling program for computers, laptops and tablets", which I did but for the extra credit, we have to have those three points in the application and I have tried but how to do the "extra credit" part, which I really need.

1.) A loop to prompt the user if they would like to place another order

2.) At least one user-defined function

3.) An enumerated data type, array or struct (structure)

I did one of these three, it's a "DO WHILE" loop asking users if they want to make another order, it's right at the beginning of the code.

Code:

#include <iostream>
#include <string>
#include <iomanip>
#include <fstream>
using namespace std;
double desktop();//function prototype
double laptop();
double tablet();

[Code] ....

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C++ :: Using Typedef With Arrays

Apr 8, 2013

I have already defined two arrays:

int songId[15];
char typeOfSong[15]

For my assignment we HAVE to use typedef to declare these. I tried a multitude of combinations using typedef, but then the rest of my code that uses songId and typeOfSong is not valid. How would I set up the correct arrays using typedef?

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C++ :: Changes In Union Typedef Not Mirrored

Sep 1, 2013

I have made VGA emulation with registers and memory in my emulator. But for some reason the writes to the union array with CPU data (register 0-8 of the VGA's Graphics Controller Registers, referenced with <GRAPHREGS>.DATA[index]) don't reflect on the union's data.

typedef union __attribute__((packed)) {
byte DATA[9]; //9 registers present!
struct //Contains the registers itself! {
//Set/Reset Register (index 00h)
union {

[code]...

what's going wrong? Have I made an error in the registers?

(In this case I write to register <GRAPHREGS>.DATA[8] (which should be the <GRAPHREGS>.REGISTERS.BITMASKREGISTER)), but the BITMASKREGISTER stays 0, while DATA[8] gets the correct value.

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