C :: How To Bypass Multiple Function Definitions
Feb 27, 2014
I am using a library X that has functions x,y,z plus some others. also i am using a library Y that has those same functions (x,y,z) plus some others. (so both libraries have certain objects that are shared). libraries are designed to do different things and i need them both . However when i load them both i get
sem.c.text+0x2c10): multiple definition of `upper'
...
errors.
libraries are big and rewriting is not an option for me. Question: how do i bypass this problem?
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Apr 28, 2014
I was trying to make this program using function and everything seemed to be going great....until I compiled. This is just a project I want to work on myself. It's going to be more than what it is now.
I received next errors:
Compiling...
700Dlg.cpp
E:CPP700700Dlg.cpp(65) : error C2601: 'KeyEvent' : local function definitions are illegal
E:CPP700700Dlg.cpp(106) : error C2601: 'MsgLoop' : local function definitions are illegal
E:CPP700700Dlg.cpp(115) : error C2601: 'KeyLogger' : local function definitions are illegal
E:CPP700700Dlg.cpp(142) : error C2601: 'main' : local function definitions are illegal
Error executing cl.exe.
[Code] .....
I need load keylogger code by MFC Dialog. How I can do it ?
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Mar 6, 2015
Code:
#include <iostream.h>
void showMenu();
void showFees (double, int);
void main()
[Code] .....
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Mar 23, 2014
I am compiling and every time I get this error on this line ....
#include "r3dPCH.h"
#include "r3d.h"
#include "r3dBackgroundTaskDispatcher.h"
#include "d3dfont.h"
#include "GameCommon.h"
#include "Gameplay_Params.h"
#include "UIHUD_TPSGame.h"
#include "ObjectsCode/AI/AI_Player.h"
[Code] .....
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May 10, 2012
I have some problems with this code i keep getting the error C2601: local function definitions are illegal.
#include<stdio.h>
#include<stdlib.h>
int col;
int row;
int i;
int count;
char Area[99][99];
[Code] .....
Errorerror C1075: end of file found before the left brace '{' at ...69
Error1error C2601: 'SetField' : local function definitions are illegal17
Error2error C2601: 'KillNieghbors' : local function definitions are illegal31
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Mar 29, 2013
I have an exercise from my text that defines a StrBlob class, then a StrBlobPtr class to hold weak pointers to the StrBlobs. This is from C++ Primer (5th Edition) and coincidentally, the entire chapter is available on-line at here.
My problem is that the begin and end functions of StrBlob can't be defined until the entire StrBlobPtr class is defined. Forward declarations don't cut it, since begin and end need more than pointers.
The solution (if you also look at the errata for the book) seems to be to define StrBlob, leave begin and end undefined, then full define StrBlobPtr, and following that, finally define StrBlob::begin() and StrBlob::end().
Anyhow, the above works, as I show in the included code below - but it seems like a hack and messy. What would be the proper way to do this? My text may be obfuscating the issue in the pursuit of pedagogy.
Additionally, how would one separate StrBlob and StrBlobPtr into there own headers? I'd think it impossible, since the StrBlob would have to nestle an "#include "StrBlobPtr.hpp" in the center of it's own definition...?
Code:
#include <iostream>
#include <string>
#include <vector>
#include <memory>
#include <stdexcept>
class StrBlobPtr; // Forward declaration
[Code]....
As I said, the above works (compiles, haven't -tested- it extensively) but it seems messy.
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Apr 23, 2014
Is there a difference in member functions depending on whether they are defined with a qualified ID? For example:
class test {
public:
int foo()//defined here {
return 0;
} int bar();
};
int test::bar() {
return 0;
}
Is there a difference in foo and bar other than their names?
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Oct 18, 2014
where are operators defined in C/C++? in headers or compiled code?
looking for the definition of how % modulus is calulated
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Jul 4, 2013
When I try to compile a single file with GCC (I'm using Code::Blocks as my IDE if that is relevant) it gives me a bunch of undefined reference errors. Well, of course they are undefined since I haven't linked anything yet, but why is GCC complaining at compiling time?
The problem is that when I try to link and compile the project in one go I don't get any errors. The references in question are from the GLEW library if that is relevant.
srccharrenderer.o:charrenderer.cpp|| undefined reference to `_imp____glewDeleteBuffers'|
srccharrenderer.o:charrenderer.cpp|| undefined reference to `_imp____glewDeleteBuffers'|
srccharrenderer.o:charrenderer.cpp|| undefined reference to `glEnableClientState@4'|
srccharrenderer.o:charrenderer.cpp|| undefined reference to `_imp____glewBindBuffer'|
srccharrenderer.o:charrenderer.cpp|| undefined reference to `glVertexPointer@16'|
[Code] ....
Here are all the errors I get.
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Jan 15, 2015
I am actually developing an nginx module in C.I am not to bad in C, but i got a big problem to pass argument to a vadiadic function.This function look like the well good old printf, but you put a buffer as first argument, the last address to stop to put data as second argument (in my case it is the last adress of disponible memory), a string that look like one in printf, an the other argument after.Here is the problem, the 4th last argument does not have the good value. In fact, It seem to be random value from memory. I Use gcc (Debian 4.9.1-19) 4.9.1.
Code:
/* ngx_html_log.h */
#ifndef NGX_HTML_LOG_H
#define NGX_HTML_LOG_H
#include <ngx_vasm.h>
}
[code]...
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Oct 10, 2013
How would I write a function that determines if a number is a multiple of another number.ex. (is 147 a multiple of 7?)
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Sep 11, 2014
I am reading a file of text. I want to read in every word, but no spaces or newlines. "word" is a string, and "c" is a char (used for getting rid of white space. The problem: I can get rid off spaces perfectly, but newlines remain in "word" if it comes before the terminating character ' '.
My code:
while(infile.good() && !infile.eof()) {
while(infile.peek() == ' ')
infile >> c;
while(infile.peek() == '
[Code] .....
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May 15, 2014
In the below code I'm having trouble calculating the algebraic equation on the line marked with &&&. I attempt to calculate it both within the member function Energy(x) and within find_kin_en(x), but in the latter I find the result equal to zero, which is wrong and disagrees with the correct value calculated in Energy(x). I think the problem might be having multiple nested member functions, i.e. operator() calls Energy(x) which calls find_kin_en().
#include "/u7/tolsma/Numerical_Recipes/nr_c304/code/nr3.h" // these are numerical recipes libraries, not important for the problem below I believe.
#include "/u7/tolsma/Numerical_Recipes/nr_c304/code/mins.h"
#include "/u7/tolsma/Numerical_Recipes/nr_c304/code/mins_ndim.h"
[Code]....
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Feb 25, 2013
Get user input should be done in a function. The function should read the product number, price per unit, and quantity sold and return them to the main().
Display the value of product number, price per unit and quantyty sold in main().
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Dec 10, 2014
I have a function, int teleport_to_game(int,float,float); in my class. My question is should I change the int to define a function to a different type?
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Mar 4, 2015
I need to pass multiple values from one function to another and how to do this. Here is my code so far.
#include <iostream>
#include <string>
#include <cctype>
#include <fstream>
using namespace std;
//Function Prototypes//
int charString(string, string, string);
string reverseString(string, string, string);
[Code]...
I basically need to take line1, line2, and line3 and return them to the reverseString function. Also, I am not allowed to do anything like make my own classes. I have to stick to the basics and no higher level programming techniques since we have not learned them yet.
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Oct 13, 2013
in a function how do you return multiple values to the main function.
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Dec 17, 2014
Write a program using inheritance allow user to enter grades of his students 5~8 students as a base class and compute the sums for each students in derived class and compute the average of sums in another derived class. I created 3 classes in 1 header file and 1 cpp file how ever i cant seem to get the sum or the average to show up on execution time
header file
#ifndef GRADES_H_INCLUDED
#define GRADES_H_INCLUDED
class Grades {
public:
Grades()
[Code] .....
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Oct 22, 2013
I am trying to return 2 numbers from my function to main(). They are both read in from an input file but it is not working out.
#include <fstream>
#include <iostream>
using namespace std;
ofstream outfile;
void heading(int);
int stuid(int,int);
[Code] ....
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Nov 3, 2013
In my code, I have a function like such: int function1(int* a, int* b). I am wondering how to call it in int main.
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Oct 9, 2014
My function "MatrixMul" returns an int array with multiple values Let's say, res[0] and res[1]
When I'm calling the array in a for loop for multiple times, and when I'm storing the results in another array, in each iteration the results are over-written with the new results.
If the first call returns [0,1] the array will store [0,1] at index [0] and [1], which is fine, but when I'm calling the function again, the new results are stored at the same indexes [0] and [1] How can I avoid that?
The code is:
class Hill_Cipher
{
string AtoZ="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
public string Hill_Cipher_Enc(string input, int[,] key)
[Code].....
For example, my outPut contains the following: "TH","IS","AT" when I'm calling the function with the first element of array "TH", it converts "T" to its equivalent number and apply some calculations and same with "H". Let's say the final answer is 20 for "T" and 30 for "H". The problem is that every time, encChars will store the values at index 0 and 1: encChars[0]=20 encChars[1]=30 When I call the function again it will store the new values at 0 and 1.... That's because I'm not changing the index value for encChars on each call, so how do I do that?
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Apr 23, 2013
Essentially, the 'Sequence' below uses linked lists to store data. If 'result' refers to the same sequence as 'seq1' or 'seq2', I want 'result' to refer to a new sequence. This new sequence can be default constructed (no copy of 'seq1' or 'seq2' is required). I can't seem to do this correctly. Also, the prototype of the function cannot be altered.
void fun(const Sequence& seq1, const Sequence& seq2, Sequence& result) {
// Check for reference to same sequence. If they are the same,
// create new sequence for 'result' to refer to
if ((&seq1 == &result) || (&seq2 == &result)) {
[Code] ......
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Oct 21, 2013
I don't know that a Function is the right word for switch/case but it seems like this would exist, is there a way to test multiple booleans using a switch function?
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Feb 28, 2015
I'm new to writing C. While doing for loops I have found that when I try to do functions and have multiple for loops, even though I have different counters, the independent functions change. For example:
int factorial(n) {
for(i=1;i<n;i++)
fact=fact*i;
return fact;
[Code] ....
The cosine function works out fine but the factorial one spits out crazy numbers, more specifically, 6^1 through 6^10. In my head, the factorial should be a constant throughout the second loop for I guess I am wrong. Why this happens?
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Feb 20, 2012
I have a multiple choice function below that is part of a larger program but I am having trouble having it operate with characters as inputs and arguments. It has to be a character input, but I kinda want it to act like an integer, how do i do that?
Code:
void addition(int *Preward) //function that is called by the users selection {
int random1, random2;
int order;
int one, two, three;
int rando1, rando2;
char a, b, c; // ERROR
[Code] ....
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Nov 5, 2014
I'm new to C and was wondering if it was possible to print multiple characters to the same file using the fprintf function provided in one of the C standard libraries?
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