49,766 Topics
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 | Help Me with this code. i JUST installed code::Blocks and am not familiar with the errors , I wanted to know what is going wrong with this? [CODE=CPLUSPLUS] #include <iostream> using namespace std; int f(); class Date{ int d,m,y; static Date default_date; public: void set_default(int dd,int mm,int yy); Date(int,int,int); Date& … |
| | i want to do program that calculat percentage of error percentage of error ={ X ( calculated) * X ( measuered) } * 100 / { X ( measuered)} and if the result more than or equal 50 it is bad if it is less than 50 til 20 it … |
| | Am trying to edit and also delete data in my text file but am finding a little problem...i want to read the specific text and the program stops when it reaches an end of line and not eof..i tried using '\n' but maybe I used it wrong cuz it cant … |
| | Hey guys, i'm new here and i'm also new to C++. I have a task where I have the user input a file name and then the program loads it into an array of type struct then finds the top 3 values and outputs them. I am so stuck right … |
| | hi i have anew class which my dialogs should be based on it instead of being based on CDialog. two weeks ago ...when i inserted a new dialog and create a new class for it ..i was able to choose my new class from the drop down list. but now … |
| | Hello!! I have a FormView and I added a Tab Control... I'm able to add pages (tabs) to it but I want to be able to have a different Dialog View on each tab??? Or how can I have different controls on every tab?? I'd really appreciate all the information!! … |
| | I have a general question about Diagram in VC++ 2008. If I want to draw a diagram out of a serie of numbers for the coordinates X and Y in a Diagram. Is there any classes/ built in methods for this. - Is this very difficult things to do in … |
| | I keep getting this error: [QUOTE] debug/moc_funccntrlparams.o: In function `qt_noop()': /home/f07/xxx/QT/include/QtCore/qglobal.h:1425: multiple definition of `FuncCntrlParams::type_pairPotList' debug/interpotcntrlparams.o:/net/home/f07/xxx/workspace/tramontoGUI/interpotcntrlparams.cpp:95: first defined here [/QUOTE] But I'm not defining type_pairPotList any where in the interpotcntrlparams.cpp file. This is what my code looks like at line 95 in interpotcntrlparams.cpp. [CODE] #include "funccntrlparams.h" . . //line 91 … |
| | Hi All, I am using RWZoneSimple object and RWTime object to check whether a given Date is falling under DST (Daylight Saving Time) or not when my server (HP-UX system) is in Non DST time (by having TZ=US/Arizona). I have created RWZoneSimple with the date that falls in DST ("05302008"// … |
| | okay, i know i might be boring with my questions but could someone tell me how can i read an array of floats mixed with ints and then print them out same as they were on input...? typecasting thing again? anyone knows a good book i could use to stop … |
 | I want recursively fill members of one structure, it looks like this: [code=cplusplsus] struct OPTIONS{ string sDirectoryName; vector<string> vExtensions; int uOperationId; } structCurrentDir; [/code] after filling all members I need to push this structure to another vector: [icode]vDirectories.push_back(structCurrentDir); [/icode] But then I need reset all members and I have problem. …  |
| | Hey, I need a little bit of help figuring out how to find the minimum and maximum of a particular data in a file. Should I treat the file I'm opening as an Array in order to find it or is there a certian function that can do this? |
| | hi, Please tell me what the below mentined code is doing? If i pass String s as `my name is "xyz. and " i am writing `. what should be the output. Thanks in advance void parse(Block<String>& f, String s) { int inquote = 0; int nf = 0; int … |
| | Hello, as an exercise in c++, I should make a parking lot, the classes are: Transport( with local protected variables color and max_velocity), Car, inherites from Transport(with extra variable model), Truck, inherites from Car(with extra variable model weight), Bike inherites from Transport(with extra variable model gear), and Parking which is … |
| | mm.., hello. First, i'm kinda new to this... kinda, anyway, i'm supposed to write a prog that handles large numbers, like 200 digits long, by storing them in a string of characters. it's supposed to have a class with functions for all the mathematical operations, reading, and writing, maybe into … |
| | How can I convert char* to a char value? can someone reply me asap |
| | how can I do this?? can someone help me [code] char * abc = "as,df,ert:we,rt,yu:ee,rr,tt"; Class x { char * a,*b,*c; } vector<x> vtr; I want to extract data from abc like, while(there is a ":") { x.a= as; x.b=df; x.c=ert; vtr.push_back(x); }[/code]  |
| | Hello all, I'm new to hash tables etc. and for some schoolwork I need to make one. The hash table and hashfunction itself aren't the problem. The "problem " I wish to solve lies in the display function of my code. I like to write a function so that it … |
 | Hello everyone! I am learning sound programming on Linux. In my app I am using ffmpeg to decode the audio, and then ALSA to pass it on to speakers. So far everything is fine - the packets are retrieved, stored in a queue. After that, the packets are read from … |
| | I ran into a roadblock developing my code for an assignment to sort a linked list as it is entered (insertion sort). We've had sketchy classes lately so the idea of linked lists is really rough for me at the moment because it's a little hard to understand. This assignment … |
| | hi i have an application where the user need to save his information. the first time he saves...a save dialog appears and the process goes as normal . but here is my question.. if he add any modification to his info and press the save button again ...i dont want … |
| | Hello, everyone. I need help with a bank account class. I was supposed to create a class called Account which houses an attribute called balance that is protected and returns a double data type. There are some other things required of me which have been completed in the coded below. … |
| | Okay, so i have an idea...that looks like it should work. I'm supposed to be able to multiply for example: 1234567812345678912345678*1234562345673456. My idea was to put each number into a string, and then make a matrix to store the values of each digit multiplied by each digit... i'll put an … |
 | Hello all I am beginner in C++ and i have some questions In many languages there are included libraries for many uses such as libraries for downloading files / uploading files using ftp connection ...etc but in C++ i cant find these libraries my question ....... must I use libraries … |
| | Hi, I have the following class and main method: [code=cplusplus] class Employee { vector<string> v; string name; int i; public: Employee(){} Employee(string &n): name(n), i(0){} void read(vector<string *> &vec) { string n; for(int i = 0; i !=3; i++) { cin>>n; Employee e(n); vec.push_back(&n); } } }; int main() { … |
| | Help - I am having the following errors repeatedly so I know it is a consistent mistake I am making but I just can’t see what it is. I already fixed many other errors and now it’s just this.....so close...... :confused: My errors are the following. I did not put … |
| | What are the major differences between C and C++ programming languages?? |
| | I am working on code to calculate the factorial using below function: int factorial (int num) { if (num==1) return 1; return factorial(num-1)*num; // recursive call } And I need to calculate the numbers from 1 to 255… The problem occurs when it reaches number 35 and above, it starts … |
| | I have a code like below that when pressing a button, panel1 and labelText1 should be seen. Then I will put the process to "Sleep". After this, labelText1 should be emty ("") and labelText2 should write "TextMessage2": Then I wil put the process to "Sleep" again. And last put panel1 … |
| | First time posting, this seems like a wonderful community. Okay, so I'm new to C++ (mostly worked with java) and I'm trying to write a program that will read in a plain text file (a short paragraph) and take and place each word in the text file and place it …  |
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