I have been poking around with some Java source code that I'd like to port to C++
Here is something I am trying to do
Code:
namespace AStar_NS { //...
class Node {
public:
Node() {
f = 0;
g = 0;
h = 0;
[code]....
Here I just want to compile the code pile and want to know what will be going on inside the debugger later on.The IDE didn't work that much. If I put AStar_NS::Node inside the TimeAStar_NS::Node's methods, the compiler will get confused. If I put TimeAStar_NS::Node there, the code also never compiles.
There are many types of nodes and transitions inside the Java code, so I can't even identify which is which inside the IDE even with IDE. There are many types of namespaces (as I create them to try to pull the code apart in order to comprehend them) And I can't reduce the compile errors down until 20 errors.
(The code is way too complicated, I can't even analyze it, I have to reply on the debugger) I want to know if Node inside the methods should be an instance of TimeAStar_NS::Node or AStar::Node or others. Should I create a more generic type of Nodes and Transitions above AStar_NS::Node and TimeAStar::Node. I know C++ and Java are quite different and difficult to port sometimes.
I am working on a project in a group at a university. We are creating a GUI in Java where the user can enter parameters. Then we want to be able to pass these parameters to a function inside our C/C++ program, that does the rest. How do I do this? So far I have managed to call a simple helloworld-function by using JNI, dll and a javah tool that create a header file from a java file. I define the helloworld-function in C and call it from Java.
Java file:
package helloworld; public class HelloWorld { private native void print(); public static void main(String[] args) {
[Code] ....
My problem is that I do not know how to call the helloworld-function with parameters. I guess that this is a special case when using JNI and a . dll. How do I pass simple char- and int-arguments from the Java class to the helloworld-C-function?
I'm building a simple little program for minecraft to reduce the repetitiveness, I'm using getpixel, it's slow, but i only need to grab about 6-12 pixels.
but the problem is, I can get the pixel data if I capture from the entire desktop display, but as soon as I tell it to grab from the active window (wich goes MUCH faster) it doesn't return any colour value's.
I'd rather not have to use getDIBits or program in java or anything since I want to keep it fairly kiss, and if it can't be done, then.. ah well, I'll just grab from the entire desktop, speed isn't to much of an issue, but it'll be a pain to keep the window at the same place.
Code: #include <Windows.h> #include <iostream> using namespace std; // vvv Ignore this, it's just used for retrieving the handle of a window without giving the full window name vvvv struct results {
I tried installing Java Accesss Bridge for a few hours now. But with no success. The installer from ORACLE does not work (rolls back at the end without error message). Many tries of patching some libs together failed.
What do I need for an application that makes use of JAB. Do I really need some sort of installation or can I simply put some headers and libs together?
I have a class 'A' which is almost perfect for my needs. Class 'B' uses class 'A' I've now designed Class 'C' and Class 'D' and noticed that there is a good chunk of code in class 'B', 'C' and 'D' for using Class 'A' is duplicated. I've separated out this code in specific, standalone functions in each of the classes. Now I'm wondering where this code should go. At the moment, the functions are duplicated in the three calling classes (B, C and D). Placing the functions into class 'A' would break the single responsibility principle. Inheritance to add functionality would likely break both SRP and LSP. The one that seems that it may work is composition.
However, Is designing a complete class just for a few functions over kill?
Would it be valid for classes 'B', 'C' and 'D' to access both the new class 'E' (which would depend on A) and the old class 'A' (which would have to be the same instance as the instance in the new class 'E'), or should the new class 'E' provide sufficient functionality so that Classes B, C and D don't need to access Class A directly? It would seem that its then an incomplete interface of the original object with additional functionality (ie, incompatible) Or should I do it a completely different way?
I am making a game and want to make an updater that grabs the source code from a page on the web. Can this use things that are available to all platforms? It could just be something that grabs the text from the page and executing it (maybe using something like Python's exec() command ?) BTW I'm using mac
this is my code i want to put the part where i have it do multiplication and addition into functions. and then call them so that it can run the addition and multiplication. Heres my code
# include <iostream> using namespace std; int main(){
I'm pretty new to C++ and I'm on Binary Trees in "Jumping into C++"! I've just created a DLL project on Code::Blocks, and I cannot get it to build and run: "You must select a host application to "run" a library..." is the message that I'm getting when I run the main code file. It's had no changes to it (except for a few extra, unnecessary line feeds), and it's the file which Code::Blocks generates on a DLL project.
whats wrong with this code, I'm trying to parse a .js file and replace all the ";" with "; " i.e add a new line after each ";". So I load the file into a char[] buffer then assign a string to this contents of this buffer. Then loop char by char through using an iterator and check for a ";", if found use replace. So int i gets to about 85898 then crashes with unknown error, 'i' should reach about 175653. It does work up till it crashes. And, is this not a simpler way to load a file into a buffer, there is in C.
I have a function that needs to return a "uint8_t" value. However before doing the processing I need to perform a test on the argument to check if it's between expected boundaries. Although this function works it gives (a logical) warning that not always a value is returned although expected. What is the normal way for functions like these where I normally should return e.g. -1 in case the test doesn't succeed and otherwise the uint8_t (t) value?
Code: uint8_t myFunc(int a) { if (a >= 0 && a <= 100) { // Perform actions uint8_t = ... return t; } }
I am using windows 64 bit 2007 , codeblocks and ive tried googling on how to strip all symbols to binary so that the people i send it to cannot read the game files but ive not found anything much... How do i do it on codeblocks..? Code:
I've had with visual studio but nothing seems to be working. No matter what I do even with simple programs, like Hello World, I'm always getting an error about a .pch header file.fatal error C1083: Cannot open precompiled header file: 'DebugConsoleApplication1.pch': No such file or directory
This is only for one of the programs I've made but I'm pretty new to programming and I've not even used the header files for anything so I have no clue how to resolve this problem.
I am in try to use PlPlot library (for plotting) in C with code::blocks IDE (ver 10.05) on windows-7 plateform. I downloaded "plplot-5.9.9.tar" and unzipped it. In documentation it is not very clear to me (I am not expert in using third party lib.), how this library can be used with code::blocks i.e. where I have to save the lib, what should be added in compiler and debugger settings etc. It also seems from document that "makefile" (linux type!!) is necessary for Windows also? I am also unaware of MSYS makefile generator (given on Wiki page) on windows?
i recently started programming. i mean I've been exposed to programming for the first time about a week ago. I've been following the tutorial here and playing around with my own code. For some reason, this code works while receiving decimals but not fractions.
Code:
#include <stdio.h> int main() { float kd; float kd_2; printf("Please enter your k/d "); scanf("%f", &kd ); }
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.
