51,593 Topics
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| | Iam having problem with the following code: All this code does is extract words separated by spaces from string when i compile it i get error27 C:\Dev-Cpp\Untitled1.cpp invalid operands of types `char*' and `char*' to binary `operator*' plzzzz help [code=cplusplus] // Tokenizing program:pointer version #include <iostream> #include <cstdio> using namespace …  |
| | Hi all, I have a piece of program written in Visual C++ which works just fine in Win XP. However when its run in Vista, the error message "A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." …  |
| | I think this could be a simple question. I have declared a 2D vector like below. The thing is that by default all elements is set to 0. What I want to do is to declare all of these elements to: -1 how this is possible without doing that with …  |
| | This thing is pushing me around. I've been through my book, and I have even downloaded the professor's notes on subject (he posted them). I can't find what I'm doing wrong. Below is the code I've written, below the code is what the console is "supposed" to look like. (Code … |
| | I really don't know where to start and to be honest I really don't know what I'm doing. I was given this project and we never went over these topics in class or the previous class. My attempts to wing it are not going so well and quite frankly its … |
| | Hi, I am using fgets in my program to count the number of lines in file. The number of columns in each line is entered by the user. But the number of lines are not known. After counting the number of lines in the file i am again using it … |
| | Hi I have a question. Basically I want to create a dictionary of words, where a user has typed in a couple of sentencies. Im then supposed to sort it in alphabetic order and also count how many times a word has appeard. The sentence contains letters and whitespaces. Ex: … |
 | I havebeen using wxdev c++ but have problems when compiling directx code even though I have installed devpaks for DX9 anyway i think the best thing is for me to get a real compiler not freeware. Are there any good compilers that have gui design tools that will compile directx … |
| | Hi, Ive made a little program that calculates the area of a circle by doing Pi * r2, but its not working and I don't know why: [code=cplusplus] #include <iostream> using namespace std; #define PI 3.14159265358979323846 #define NEWLINE '\n' int main () { float Radius = 0; cout << "Radius: … |
| | I have to take a 2d array of [6][8] floats that represent a star map and add the four surrounding numbers to it to measure it's intensity of light. Would something like make sense??? [CODE]for(i=0;i<6;i++) { for(j=0;j<8;j++) { stars[i][j+1] + stars[i+1][j] + stars[i-1][j] + stars[i][j-1];}}[/CODE] instead of writing many lines … |
| | Hello! I need some help figuring out how to display my array. The program I am working on is one in which the user can enter any given 20 integers and it display them in descending order. I was able to get that part to work but cannot get the … |
| | Hey... do anyone knows c++ function for implementation of big numbers...i tried googl it...but, i can't find nothing that solve my problem i need to calculate a^e(mod n) example: 125^107 (mod 187)=5 result of 125^107 is too big for standard notation in c++... can someone please help me! |
| | i am writing a program on 2-D transformation which handles transformations for three objects, namely, point, line and a triangle. i have created a base class Object and derived three classes - Point, Line, Triangle - from it. Here i will discuss just the Object and Point class. The code … |
| | I am trying to paint my own form by using the following code: case WM_PAINT: hDC = BeginPaint(hWnd, &ps); hBrush = CreateSolidBrush(RGB(255,0,0)); FillRect(hDC, &ps.rcPaint, hBrush); EndPaint(hWnd, &ps); break; My problem is, that when you resize the form or drag it around, you can still see it flash grey between paints.... …  |
| | I'm trying to create a function that will delete an already saved file. I was hoping std::remove() would do the trick but I don't know the syntax. Will std::remove() work or should be trying something else... |
| | Well, the basic structure is a form which uses multiple classes defined in seperate files. Below is my controller class which is supposed to keep track of which files are opened. It's included in both the form and the [i]Map.cpp[/i] file, which contains all Map function implementations. I'm supposing these … |
| | Hi, I am trying to create an application that gets the contents of two folders. It should compare the file names in the two folders and put files with different names into a list (unique). Each file with the same name in both folders should be read and the contents … |
| | I am trying to figure out the merge sorting. I have searched the Dani and found other examples but they did not help me. I wanted to figure it out by myself but I cant. here are my Errors : Error 3 error C2446: '<' : no conversion from 'int' … |
| | I need help with my output. I have pretty much everything done. I'm just getting an output like: "The class average is 5.8%" "The class average is 12.4%" "The class average is 13.6%" "The class average is 18.4%" etc. "Highest grade is 58%" "Highest grade is 66%" "Highest grade is …  |
| | Hi, guys If you open [url]http://support.microsoft.com/kb/310674[/url] link, you will see there are several ways that make using references in a Managed C++ application. I tried all of them, but i still cannot see the object of the dll reference project. My project is a mixed mode project which contains normal … |
| | Ok. I'm not experienced at all, and I need to program a set of different math formulas into a code. Here is the first step I'm trying to take. I have an octahedron that has 8 plates. Each plate is composed of 3 vectors. There are 6 vectors in total … |
| | ****I'm stuck as to what my next step should be?? I also want to know if I'm on the right track. I've tried searching for some type of sample program as I am sure there are plenty, but when I start to write it doesn't seem to make sense. Any … |
| | I am writing a program to handle a DVD collection. There are 2 classes. The first class is a string class that has member functions that handle strings(length, compare, etc.) and store strings(dynamic array). The second class handles the actual DVD's-title, year, actors, and brief description. I'm confused on working …  |
 | hello dear guider i design a simple application in C++ 6 using mfc. but when i try to test it on other pc it doesn't run i dont know why because am a dummy. an sorry i might have flame dont blame me am just beginner.  |
| | could someone atleast point me in the right direction? i'm new at this and i've been working on this program and I just hit a brick wall. Its like my brain stopped working or something... :confused: I have to make a "stop watch" program...have a class defined for stop_watch that … |
 | Hello. Any way of preventing multiple instances of executables? I'm writing a program that uses a file, it would be quite messy if someone would start another instance of same program. If it depends on OS, I would like to see solutions for windows and unix-type (linux) systems. Thanx |
| | Hi, My doubt is that..lets say we have an usigned int.If I do a left shift by 32 bits...I'm getting back the original one..shouldnt it be all zeros?? |
| | Hi, I'm trying to code Huffman coding.I've formed my huffman tree but dont understand how I'm gonna assign bits to it.How do I do bit operations and how do i maintain bits of length 3,5 etc? Any help appreciated |
| | Hi All, I want to enable/disable users who logged in Domain Name Server (DNS). Through VC++ code. If anyone has idea regarding this please reply me asap. Thanks in advance for u r reply. Regards, Shalin.  |
| | so I'm writing a program that takes the input from the file, an ISBN number, removes the "-" from it, puts it through a formula (1*first number 2*second number ... 8*eight number) /11 and what ever that equals should be the same as the last number in the ISBN if … |
| | I have a serious problem which i am not being able to figure. This program finds all the permutations of a given string using recursion. The diagnostic outputs show that the values of the 'choice' and 'final' character arrays is not maintained at a position (I don't know why). Please … |
| | hello，any greate man can tell me the difference between cxx and cpp,h and hxx? waiting the answer,thanks |
| | [CODE]#include <iostream> #include <string> #include <time.h> #define newline '\n' using namespace std; char ch; int main() { cout<<"*A Signed on\n*I Signed on\n"; cout<<"\nA:It's you again, isn't it?\n>I:"; string ent1; cin>> ent1; while(ent1 == "yes" || ent1 == "Yes" || ent1 == "YES") { cout<<"A:No...\nA:It's been so long since you last … |
| | Does anyone know what's C++'s SETW() Equivalent in Visual Basic .NET ? SETW: Sets the number of characters to be used as the field width for the next insertion operation. Is there anythign similar in VB.NET. Note: I want to use in a ListBox. I've tried using: [CODE] Dim fmtStr …  |
| | Is it possible to put compile-time conditional code in template functions? Kinda like, [code=cpp] template <class T> void print(T &foo){ cout << foo; #if T == float cout << " is a float." << endl; #endif }[/code] Something like that, I hope I made myself clear. Thanks in Advance, |
| | Greetings! My task is to impement [url=http://en.wikipedia.org/wiki/Bresenham%27s_line_algorithm]Bresenham's line algorithm[/url] by mapping floats to integers, but be able to draw lines of any slope, including horizontal (zero slope) and vertical (infinite slope) lines. (The near-bottom of the page has an integer-only version of this.) My implementation of the linked pseudocode works … |
| | I really need some help!! I do not understand anything! I do not even know how to start!!! Can any1 help plz!!! “Moore’s law describes a trend in the history of computer hardware. The number of transistors that can be inexpensively placed on an integrated circuit is increasing exponentially, doubling …  |
| | Please I'm trying to create a sales management software and am experiencing problems trying to create a table like we have on spreadsheets for enterring sales data.I'm using the Win32 API.Could any one give me an idea on how to implement this ? owobass |
| | I was wondering if this code is correct syntax for function parameters in a class? [CODE] class myclass { private: char mystring[50]; int length(char string[]); public: int yourlen(){ return length(_string, _string); [/CODE] I know later in my code, I would have something like this: [CODE] mystring A; char string[50], string2[50]; … |
| | Hi everyone. I wrote a Rock Paper Scissors program my first quarter of C++ two years ago, and now I have a job at a programming job. I showed someone my little easy program and they challenged me to make a verson 2.0 with AI and a gui. The Gui … |
| | I have signed up for high school online c++ courses, which has proven to be a mistake, due to my inability to grasp the content. I would like to keep learning, but as the semester draws to an end, I must catch up on my work. This is a project … |
| | hi guys, I am a student that I am learning data structures. My professor asked me for this assignment Write a recursive function that will be able to read and dsiplay the elements of an array and the function should not have more than one loop whether it is one … |
| | hi i'm new for c++, i tried to work with mouse pointer on my run window but i dont know how to make interrupt to do it. thanks |
| | Hello, I want to test several small apps and would like to group them into one Eclipse project. That is, I have several source files each with a main function. Can I configure the builder to compile each of the source files? |
 | [url]http://www.mixsoftware.com/product/cpvideo.htm[/url] Can anyone tell me if this video and course work is helpful at all? Have any of you guys personally purchased this, or do you believe it to be a waste of time? Keep in mind im fairy new to programming. Thanks |
| | Hello everyone. I know this is a C++ forum not MySQL forum but I need help with the C++ library for MySQL I am hoping that there will be people here who are knowledgeable about MySQL++. My problem is that I can't get the g++ compile to link to the … |
| | How to get the invoked command and parameters as one string instead of a list of argv-s (especially gcc under Linux)? |
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| | Hi, Trying to play with multithreading by taking some of my existing apps and converting them over. In doing so, I noticed a strange phenomenon that I've been able to reproduce in a very simple program. let's say I create 2 threads. Each thread simply does a for loop from … |
| | #include <iostream> #include<string> using namespace std; class substr { public: void getsubstr(char* b, char* db) { char* stpos = strstr(db,"gi|"); int pos = db-stpos; char* end = strstr(db,"|ref"); int endpos = abs(db-end); b= new char[endpos-pos+2]; int i=pos+3; for(;i<endpos;i++) { *b++=*(db+i); } *(b+i)='\0'; } }; int main() { substr* s; char* … |
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