C++ :: Using Library - Error With Struct Declaration
Jul 30, 2012
Okay so I'm writing a simple program - so far with just 1 header and 1 .cpp file to go with it. I'm getting strange errors saying that my struct hasn't been recognised even though I declare it in the header. The code involved is --
Code:
#include<stdio.h>
#include<iostream>
#include<sstream>
#include"bots.h"
//#include"prisonersDilemna.h"
//write program to battle multiple bots with a random choice generator
//and after all iterations post who comes out on top.
[Code] ....
||=== Build finished: 6 errors, 0 warnings ===|
How should the syntax be? Why does my program not recognise bot as an object type? Why can I not have a void method?
I am trying to compile the files below. The PosLin.cpp contains the SurTriAuto and SurTriPosRotAndQ functions below. Before adding SurTriPosRotAndQ, it compiled fine, but when I added SurTriPosRotAndQ, I am getting "invalid use of incomplete type ‘struct PosRotAndQ" error messages
I was thinking I could try moving SurTriAuto and SurTriPosRotAndQ to PosLin.h, but since they return "T*", I'm not sure what to do
I have a "t.h" file
namespace TNS { class T {
[Code]....
when I add "include Pos/PL.h" to geopar.h, I get an error saying v.hpp is missing, where v.hpp is part of a 3rd-party software and it is already in my directory
I keep getting a "Declaration syntax error" at line ""int main()". Is there something wrong with my int main()? And how do I go about it? Here is the program:
#include<stdlib.h> #include<iostream.h> #include<stdio.h> #include<math.h> #include<conio.h> float rung4(float x, float y, float h) int main() { float eps=0.00001;
PROGRAM:- #include<fstream.h> //for reading and writing files #include<conio.h> //for clrscr() #include<string.h> //for string characters #include<stdio.h> //for gets and puts function #include<process.h> //for exit function #include<iomanip.h> //for setw function #include<dos.h> //for delay and sleep function
However, I got this error in the 'for' line: "error: expected ‘;’ before ‘it’" (and then errors that it is not declared, etc). I'm sure that there is no missing ; in other functions. If you try to write a random line before that you get no error there for example, always in the for.
It is there something that you need to do with iterators when you declare generic datatypes?
I am using OpenCASCADE environment to read STL file! I face a problem, with forward declaration error with the following
void StlReadIn::STL_Import() { std::string FileName; std::cout<<" Enter the file name "; std::cin>>FileName;
[Code] .....
Error message:
stlreadin.cpp:26:47: error: invalid use of incomplete type ‘struct StlMesh_Mesh’ /usr/local/oce-0.9.1/include/oce/Handle_StlMesh_Mesh.hxx:23:7: error: forward declaration of ‘struct StlMesh_Mesh’
i have the following error defines.h:14:23: error: two or more data types in declaration specifiers, the begining define.h source code is (the line 14 is in red):
I downloaded Oracle instantclient-basic-nt-12.1.0.1.0.zip and instantclient-sdk-nt-12.1.0.1.0.zip and extracted both to c:oracle I then went into visual studio 2013 and created a Win32 Console application with all default parms.
I then went into project -> properties -> C/C++ -> General -> Additional Include Directories and added my include path C:oraclesdkinclude
I then went into project -> properties -> Linker -> General -> Additional Library Directories and added C:oraclesdklibmsvcvc11
I then went into project -> properties -> Linker -> Input -> Additional Dependancies and added oraocci12.lib
The program compiles but when I debug i get a RUNTIME error that says "The program can't start because oraocci12.dll is missing from your computer. Try reinstalling the program to fix this problem. But I know the file exists in C:oraclesdklibmsvcvc11oraocci12.lib
This is the code if it makes a difference
Code: #include "stdafx.h" #include <iostream> #include <occi.h> using namespace std; int _tmain(int argc, _TCHAR* argv[])
I have been trying to get the libcurl library to work with the following program shown below but I have been getting the following error:
||=== Build: Debug in test3 (compiler: GNU GCC Compiler) ===| objDebugmain.o||In function `Z8getstockPcS_':| undefined reference to `_imp__curl_global_init'| undefined reference to `_imp__curl_easy_init'| undefined reference to `_imp__curl_easy_setopt'| undefined reference to `_imp__curl_easy_setopt'| undefined reference to `_imp__curl_easy_setopt'| undefined reference to `_imp__curl_easy_setopt'| undefined reference to `_imp__curl_easy_setopt'| undefined reference to `_imp__curl_easy_perform'| undefined reference to `_imp__curl_easy_cleanup'| undefined reference to `_imp__curl_global_cleanup'| ||=== Build failed: 10 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|
I'm using Windows 7 64bit and Code::Blocks. Under 'build options' linker settings and link libraries I added all the libraries listed in the lib64 folder namely, libcrypto.a, libcrypto.dll.a, libcurl.a, libcurldll.a, librtmp.a, libssh2.a, libssh2dll.a, libssl.a, libssl.dll.a, libz.a, libz.dll.a, and libzdll.a. Under search directories compiler I included c:libcurl-7.34.0-devel-mingw64include and under search directories linker I included c:libcurl-7.34.0-devel-mingw64lib64.
I am trying to use the C++ version of VOCE voice recognition API. It is an API built in Java, with support to C++ as well.
It works totally fine when I am working with VC2010. In vc2010 I have put all the necessary include files in the Vc++ Directories->Include Directories, and the library D:Program FilesJavajdk1.7.0_45lib in Linker->Additional Library Directories, and i added jvm.lib in Linker->input And everything works great
However, whenever I am trying to execute it in Qt, I am getting the error:
Code: thread.obj:-1: error: LNK2019: unresolved external symbol __imp__JNI_CreateJavaVM@12 referenced in function "void __cdecl voce::init(class std::basic_string<char,struct std::char_traits<char>, class std::allocator<char> > const &,bool,bool,class std::basic_string<char,struct std::char_traits<char>,
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.
I am debugging a library. I can step into the code however the watch window doesn't show the values of any variables. It will display a message in the value field:
Code: m_pParentCXX0017: Error: symbol "m_pParent" not found
Interestingly it does show values for local variables in that function but not member functions. Most of my data members are member function though that I want to debug. I am using VS2010.
Well I tried to assign a new char value from a struct to another char variable but I got the "Cannot convert 'int' to 'char'" error when compiling. I've tried several alternations but I still can't get away with this error.
Here's a section of the code:
javascript:tx('code') for(int i = 0 ; i < 10 ; i++){ pts[i].dist = sqrt((pts[i].x*pts[i].x)+(pts[i].y*pts[i].y)); }
I am trying to use struct to store variables from a text file and use them in the main program. I have first tried running the program without using struct and declaring the variables within the main program and it runs fine. But after using struct, it gives no compilation error and a segmentation fault as output. Also, if the size of file/variable size is unknown can I declare variables as char string[]??
The code is as below:
Code:
#include<stdio.h> struct test { char string1[10000];
Below is the code for reading a struct that was stored in a binary file. Problem is while reading from file I get the name without first character and age is always equal to zero which it should not be.
I've been reading about libraries; How to make them, how to use them, the different types of libraries, etc..
When using a shared library, does the program require that library to be installed on the computer after the program has been compiled into an .exe?
Ie.. if somebody downloaded a "Helloworld.exe" that I had compiled on my computer using a shared library (that wasn't part of a standard operating system), would they also need that shared library on their computer for the program to run without errors?
and for Static Libraries, when I compile a program using a static library, does it include in the final binary only the functions of the library that are actually used, or does the compiler add in the entire library?
