C++ :: Output Of Dumpbin Export To See Functions Of A DLL
Apr 22, 2013
From the console of VCE I have run dumpbin export as
Code: dumpbin /export myDLL.dll
in order to see which functions is the dll providing. I got as an output:
Code: ordinal hint RVA name
1 0 00024B0 _Function1@4
2 1 00024E0 _Function2@0
.....
I think RVA means Relative Virtual Address, but what does the @4 or the @0 (or @16) means?
BTW the @# notation is a c-style function naming convention where the number is the size of the parameters accepted by the function. 4 might be an integer or a pointer on a 32-bit system.
If this is the case, I am guessing a @12 might mean three integers and @16 four integers?
I'm working with inheritance and pure virtual functions, and I want to overload an output stream operator. However, every time I run the program I get this: 0x7fff00ee98c0.
I'll include a base class and a derived class so you can see what I'm talking about.
Base:
#include <iostream> using namespace std; #ifndef _Insurance_h_ #define _Insurance_h_
[Code]....
The application is something like this (I'm assuming the user has already inputted the name, salesperson, make, model, etc):
The program is supposed to read in a string from the user and then output the number of each vowel that the string has. My first function is initializing the vectors, and the one that I'm having trouble with is the function used to read the string from the user and save it.
// FUNCTION PROTOTYPES GO HERE: void init_vectors(vector<char> & vowels, vector<int> & frequencies); string read_text(const string & prompt);
[Code] ....
And I'm getting the error:
freq.cpp: In function ‘std::string read_text(const std::string&)’: freq.cpp:74: error: no matching function for call to ‘getline(std::istream&, const std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)’
I'm not too sure if I can't use the function getline here or if there is something wrong with the function prototype itself but I'm pretty sure there isn't an error there as it was given to me.
Is there a way to export a c++ class for another language. I need to find an interpreted language that can use c++ classes (actually just one class) exported in DLLs. It wouldn't surprise me if you couldn't though because of how classes are handled in c++. Maybe python could do it because it's object oriented uses something very similar to the "this" pointer.
I have the following class header in library, but when i initialize in main the class, i have an error unresolved external symbols. So the class is not exported as it should.
Code:
template <typename Key, typename Value> class UTILITIES_EXPORT MyMap : public QMap<Key, Value> { public: MyMap() : QMap<Key, Value>() { }
i'm kinda new to c#, i wanna create a program which will take few data from GUI and export it into an excel file. Another thing is how to modify the data displacement in that particular excel file?
I want to export the windows form in which text box,label and gridview ,gridview export to excel is working fine,but i need to export the whole form as such to excel.Is there any option to select Panel : This is my code:
I'm building an app using VC++. The app links to a DLL built using TDM-GCC (which uses MinGW I think). Obviously, the DLL comes with a link lib.
If the lib is linked to another MinGW app, the DLL functions get found by name. So if the DLL builder updates his DLL, the MinGW app carries on working.
However, if the same lib is linked to a VC++ app, the functions get found by ordinal value. But MinGW doesn't seem to have any means of guaranteeing that a later build of the DLL will use the same numbering scheme. So his new DLL will break the pre-existing VC++ app that used it.
In VC++ this problem could be solved by using a DEF file but that doesn't seem to work in MinGW. So my question is:- can a DLL built with MinGW be somehow instructed to export its functions only by name - or at least to export them so that any other compiler will import them by name and not by ordinal numbers?
I am able to export a tabulated string to an Excel file, when I open the file in Excel it looks fine (3 rows, 3 columns). However, the formatting seems a bit dodgy as I can't then read the same file back using C#. If I open it in Excel and do a save as, then I can read it from C#.
fileWriter = new System.IO.StreamWriter(@"C:Sheet1.xls"); //
I have written a CFD program that final results store at several 2D arrays. For instance, temperature of a square plate. For every point of plate i and j (i,j), I have a temperature amount. On the other hand, these temperatures change by time.
theSpace.TheCells[i, j,0].Temperature
I would like to save these data into an excel file and each sheet contains data for specific time (for example, an excel file with 50 sheets that cell number shows the coordinate of a point and the value in it is the temperature and next time step data's will be in the next sheet of current workbook )
I was thinking my code should be something like the following note, but it doesn't work:
// Implement time loop int counter = 0; for (int step= 1; step<= MaxSteps; step++) { // call Excel output method ExportData(ResultsArray,step,nx,ny);
I have been playing around with .txt and .dat files lately. I only manage to load the files, but I don't seem to be able to load files using a variable.
Also modifying the data after it is imported is also currently problematic. I know how to go about the process without the need to import anything, but whenever I import the data I am having trouble modifying/ editing the ".txt" or ".dat" data.
I'm a little confused by my programming assignment this week. I've been working at it Wednesday and I've made progress but I'm still confused as to how I'm supposed to do this. The class I made is called Stack, and it's derived from a template class called StackADT. We also utilize a class called unorderedLinkedList, which is derived from a class called linkedList.
We're supposed to implement all of the virtual functions from stackADT in the Stack class. The Stack data is stored in a an unorderedLinkedList, so what I'm confused by is how to implement a few of the Stack functions because there are no functions in unorderedLinkedList which we could call to manipulate the data.
As you can see from my attached code, I'm really confused by how I'm supposed to implement the pop() and top() functions, and I also think my initializeList() function is wrong. We don't have any similar functions in unorderedLinkedList to call, so I'm at a loss of how i'd access my unorderedLinkedList. My initial thought was to call the similar functions in the class that unorderedLinkedList was derived from, linkedList, but I'm unsure of this is what we're supposed to do, or if theres actually a way to access my unorderedLinkedList without having to use the functions from the base class.
NOTE: We're not allowed to modify stackADT, unorderedLinkedList, and linkedList.
Stack.h
#include "stackADT.h" #include "unorderedLinkedList.h" template<class Type> class Stack: public stackADT<Type>{ template <class T> struct nodeType { T info; nodeType<T> *link;
But now I'm trying to use this to point to a function inside a class so instead of do11, i want to be able to point to Basic.Do11. Somehow this doesnt work and I keep on getting this message:
error: argument of type 'void (Basic::)()' does not match 'void (*)()'
So In my studying of C I am starting to come across more programs with functions in them.This particular program asks for two numbers, and calculates the sum of all the squares of the two numbers and the numbers in between them. I am confused about the get_int() function.
Code:
/* checking.c -- validating input */ #include <stdio.h> #include <stdbool.h> int get_int(void); // validate that input is an integer bool bad_limits(int begin, int end, int low, int high); // validate that range limits are valid double sum_squares(int a, int b); // calculate the sum of the squares of the integers a through b }
[code]....
So in that get_int() function, it's pretty simple if scanf returns 1, otherwise... another while loop call the getchar() function, which is assigned to the variable ch. So say I enter 'a' for the lower limit, this is what happens:
Code: Enter the limits (enter 0 for both limits to quit): lower limit: a
a is not an integer. It seems as if getchar() somehow "got the character" from scanf(). There's no way that getchar() could have been simultaneously reading my input, because that function is not even called until scanf has already not returned 1. So I'm confused how that happened. I was under the impression that getchar() got input from the keyboard, which would lead me to think that I would be prompted to input something again when getchar() is called, before putchar() prints the scanf input. But this is obviously not the case.
Also, I'm curious about that comment beside putchar(ch) that says //dispose of bad input. I recall a long time ago on these forums, someone told me something about how once scanf has read input, that input is like... stuck to scanf.. So does putchar() not only print the input from scanf/getchar, but also unload it from scanf, so to speak?
I'm getting a bit lost in calling functions correctly. The assignment says to, reprogram this assignment using functions and include the additional features identified below -
Design your program so the main function invokes/calls functions to perform the following tasks:
4) sort the arrays in ascending order by student ID number
Here's what I've got thus far and I'm confused cuz I might be calling my function incorrectly.
Code: #include <stdio.h> #define MAX_ENTRIES 50 void s_ID (int student_ID[], int test_score[], char char_val[]); int main (void) {
I am new to c and I have come across a problem when adding other functions to a programme and printing the values. The question I am attempting to solve is :
The following function computes ex by summing the Taylor series expansion to n terms. Write a program to print a table of ex using both this function and the exp() function from the math.h library, for x = 0 to 1 in steps of 0.1. The program should ask the user what value of n to use.
double taylor(double x, int n) { int i; double sum = 1.0; double term = 1.0; for (i=1; i<=n; i++) { /*Or we could have written: */ term = term * x / i; /* term *= x / i; */ sum = sum + term; /* sum += term; */ } return sum; }
My code is
Code:
#include<stdio.h> #include<stdlib.h> #include<math.h> /*Taylor series for e*/
[code]....
code prints out the values for exp, but it gets stuck in the Taylor function and I'm not sure how to solve it.
forget everything from before. It came out of confusion regard the supplier functions. dis_s() and read_s() the part functions work and are not any different really.
when I run the dis_s() function it just prints out garbage until it segments. starts with a bunch of 0 and newlines until it starts printing locations on my computer...... it worked on campus with debian and I only copied it from gmail to my computer so I really don't understand whats up(im on mint).
In my program below, in the getage and get level functions, if an incorrect input is entered, then the correct one is entered after, it still returns the bad input back to main.
Every time screen2() runs it always outputs "Numbers entered were 0 and 0". I want the numbers that were entered in by the user in screen1() to be displayed.
Not quite sure what the problem is here. I have all my functions in my class header file, and I believe I have them declared at the top, but it is telling me that I do not. The project is simply to use set and get functions to display the date.
