51,593 Topics
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| | Hi!!! How Are you I bring a new program which I have solve it ; but there are 7 error without explain please I hope that I have any body to help me and I will be happy thhhhhanks alot :) This is the question Consider the following class definition: …  |
| | :'( :icon_cry: i'm trying to make a snake game & i can't make the lenght of the snake increase & it's score & the fruit appears one time only & i have to press on the arrow all the time please help me in this code today please. i've thought … |
| | Okay I have a small problem. I have to load a file which contains (for example): a bleh b blah c bloh So basically it contains a character(1,2,3,..etc) followed by a string (bleh,blah,bloh etc..) I have to create a struct which should contain a char and a string, they will … |
| | i trying to input the text from a text file into a byte buff[]. When i did this byte buf1[] = word; it will prompt me with "initializer fails to determine size of `buf1' " and invalid initializer error. How am i able to pass in the text of my … |
| | Hi Everyone, I have a C++ program lesson, but i can't to do it. I have a binary file with structured datas. I have to read the datas, and take into a class (structure array). Here is my code: [CODE]#include <iostream> #include <fstream> using namespace std; struct dolgozo { char … |
| | Question is: "Implement a Person class that includes data members to represent name, address, and identification number. The class interface includes methods that provide appropriate access to the data members. Derive a CollegeStudent class and a Professor class from Person. Each of these derived classes should add appropriate data members … |
| | hey friends i am working with a program of "stack of stack".....and i thought to work it out using inheritance....but i m stuck in it... i thought to inherit both the stack - the parent stack and a stack element....from a single base class.. i mean i am in dilemma … |
 | Just been looking over Dynamic Memory Allocation, using new. Heres a snippet of the code i've got. [code=c++] vertices = new float *[v]; for (i = 0; i < v; ++i) { vertices[i] = new float[3]; } [/code] what i was thinking was could i just do [code=c++] vertices = … |
| | hi to everyone, In this semester we are having a class concerning High Performace computing / Parallel processing... In short i have the following questions: --- We are using pthreads and C. I think that i can use pthreads in c++ code but is there any way to use threads … |
| | Am trying to extract a string of characters and numbers from a text file into two different data types in a linked list...i.e the if the text file has the data myname 100 i want the "myname" to be stored as a string and then the 100 as an integer..can … |
| | Hi , I am using openRTSP test program. In the make file i used debugg option. But when i tried to debugg for example : "b 320", i got the following error. No line 24 in file "init.c". I don't know about this error. But gdb is working fine. For … |
| | I'm a beginer in C++, and I've read number of posts regarding reading CSV files but have not understood how to convert them in to an array my file reads just numbers that are seperated by tabs 23 34 67 78 45 56 89 90 23 45 79 23 33 …  |
| | Hi, i have a function which is supposed to compare two matrices, however i does not work properly. I get this compile warning. [code] warning: control reaches end of non-void function [/code] Here is the function. [code=c++] bool matrix::isequal(const matrix& ob3) { for (int i = 0; i < rows; … |
| | Hi, I'm not sure if this is the right thread, but here goes. I have a program installed which shows the live price of a product i am interested in (i.e. the price changes every couple of seconds). Now I cant access the programs source code to get the price …  |
| | hello, I have the following problem I have an unsigned long variable, but it is designed to hold values within 0 .. 100 ( I know an unsigned char would have been enough, but i have to use an unsigned long ). I have to write that value in a … |
| | Hello I have an abstract class called Number and a simple derived class called Double, which has a private variable value and a function called getValue() which returns the value; I also have a vector of pointers of type Number which are pointing to Double. code: [code=c++] ... vector<Number*> v1; … |
| | Question is: "Write a complete program that writes into a file from an array of string and also in reverse order." Please help |
| | I am trying to write a program that takes email addresses out of a text file (for easy copy paste) but when it finds one and prints it to the console it skips to the next line. So if there are two email addresses in one line it will only …  |
| | I've posted something along these lines before, but it's a tad bit different this time, hopefully some of you can point me in the right direction. I'm designing a tool that will make adding things to a database easy for people not familiar with SQL, it will basically export a … |
 | So I'm trying to create 4 arrays with data input from a .dat file, and for some reason it won't. The file has four columns, and I want four arrays with the info from each column seperate. For some reason, I'm having trouble doing that with the following code (minus … |
| | //person class class Person { //private: public: char name[30]; char type[20]; char date[10]; char id[10]; Person(char pname[],char ptype[],char pdate[],char pid[]); void addPerson(); void personDelete(); char personFind(char pid[]); }; //this function find with id and return the name of the person char Person::personFind(char pid[]) { fstream readFile; readFile.open("employee.txt",ios::in); if(readFile.fail()) { cout<<"Cannot … |
| | Hello All, I new to this forum and C++. Searched a lot on the web, but could not find help anywhere. I have two directories under each of which, I have multiple .cpp files. Each of the directories have a one .h include file that contains function declrations for all … |
| | I have a problem with sorting a vector in a specific order. As seen below I am putting 4 strings into a vector like this. The result of the sorting that I am after is like this: (Highest Value at the top and the Lowest Value at the Bottom) [B]20A … |
| | i'm trying to make a snake game & i can't make the lenght of the snake increase & it's score & the fruit appears one time only & i have to press on the arrow all the time please help me in this code today please.[CODE]#include<graphics.h> #include<conio.h> #include<math.h> #include<time.h> #include<stdlib.h> … |
| | hey programmers, i need some help. i want to devlop a program which accept any three number or alphabets or symbols from user and show output as all the possible combinetion of the entered number or alphabet or symbols. pls guys give me complete program code its urgent. |
| | [code=cplusplus] void fishing(vector<Fish*> &basket); int printBasket(vector<Fish*> &basket); int main() { vector<Fish*> FishVec; Fish* aFish; int totalweight=0; int i=0; while (totalweight<15000) { fishing(FishVec); aFish=FishVec.at(i); aFish->printMe(); if (aFish->acceptable()) { totalweight+=aFish->getWeight(); cout<<"total weight:"<<totalweight<<endl; cout<<" Has been put in the basket"<<endl; } else { cout<<" Was released"<<endl; } i++; cout<<endl; } } void fishing(vector<Fish*> … |
| | I have a class (for the mathematically inclined, it's a tensor class that allows me to work with tensors of any rank and dimension), and I'm trying to set up assignment in a particular way, but having trouble. The idea comes from the vector class. With that, you can retrieve … |
| | i am trying to implement a database of books and i am have to use linked lists and possibly dynamic arrays for the first time so i am a bit confused..i just wanted to know if this is how i should b going about my constructors and if theres anything …  |
| | Hello, I'm trying to use some default (static) members for my class. At first I've created class which looks like this (this is just a small code): [CODE] //rozšírenie materiálu, M (par (ext)) typedef struct ExtendedMaterial { //hmotnosť float Substantiality; //krehkosť - tuhé látky, viskozita - tekuté látky float Insubstantiality; … |
| | Hi, I am having a problem with returning a 2d array back to the main in my program. The program reads in a matrix from a file, then it has to multiply etc, however i cannot get the print function to work since the array that is made in the … |
| | hi i ave an assignment on point of sale terminal where i have to write a program so that it displays the product ID, amount of product , cost of each product and then the total cost. the following code shows how i've started it. Could some one tell me … |
| | Hi all, I have a program that reads a text file and counts the frequency of phrases, for phrases up to ten words long. I solved a problem with printing out phrases that occur more than once, however I have discovered that my program reads punctuation marks and includes them … |
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| | New to classes. Getting alot of errors when calling the private member variables (from down in main). Most are telling me either i can't access the private member variable IDs or the other member variables i'm attempting to access (debit, credit, balance) are undefined ('identifier not found'). Also getting 'overloaded … |
 | Hey, so I have a file I use to store my own math functions called MyMath.h. I included MyMath.h in my main.cpp file and it worked fine. But then I tried including it to another file, and I get this error: Block.obj : error LNK2005: "int __cdecl Random(int,int,bool)" (?Random@@YAHHH_N@Z) already … |
| | I have been teaching myself c++ for a little while now and came across something I couldn't figure out. I am trying to figure out how many char*s there are in a char**. In the current program I am using *argv[], so I can access it through argc, but is …  |
| | I want to run Exe after 1 minute when computer starts Means suppose comp starts at 10:00:00 pm my exe automatically executes at 10:01:00pm How to do it through program?? |
| | I am having an issue with the following code: [CODE]SerialPort^ com = gcnew SerialPort("COM1", 9600); array<unsigned char>^ messageBuf = gcnew array<unsigned char>(512); com->Open(); com->Read(messageBuf, 0, 512); com->Close(); [/CODE] messageBuf is not being filled with anything. I know the port is open cause writing works fine. Any ideas why this is? |
| | I am creating a book database using C++. I am using a book structure which contains all the information for each book that I create. The problem I am having is that I want to be able to search the file I am printing the books to for a specific … |
| | I'm stuck on figuring out the best to do this assignment. I need to it with either a single array or a 2d array, no structs or classes or anything. Should i just have a 20x8 array and enter the data that way? A company has records for the hours … |
| | [CODE=c++]int j=1; fstream kd("Gydytojai.sed"); while (!kd.eof()) // Checking if the entry already exist; { if (gydmas[j].vardas==pgyd.vardas) {ShowMessage(L"Gydytojo id jau egzistuoja"); pagalb=true;}; // if the entry exist, variable pagalb becomes true j++;}; kd.close(); [/CODE] Well, i'm checking if in the file Gydytojai.sed while it is not end of line checking if … |
| | Hi, this is my first time posting to this forum so please let me know if I'm doing anything wrong. I would like to know how to do the following... a. Write the internal representation of “17” in ASCII using two binary numbers b. Write 17 and -17 in two’s … |
| | Write two program segments (functions) that accomplish each of the following: a) A function that Calculates the integer part of the quotient when integer a is divided by integer b. b) A function that Calculates the integer remainder when integer a is divided by integer b. Use the functions developed … |
| | Hello guys under a project i have to complete for this semester i have to think and implement a shortest path algorithm other than the ones i have already coded so far for this course , which are: - Bellman Ford - Floyd - Kruskal The whole project is a … |
 | Please help me in doing this problem in C++ without filing ______________________________________________________________________ [code=cplusplus] #include<iostream.h> #include<conio.h> #include<stdio.h> #define min(a,b)((a)<(b)?(a):(b)) int a[6000]; main() { file*input=fopen("number.in","r"); int n,p2,p3,p5,p7; a[1]=n=p2=p3=p5=p7=1; while (a[n]<2000000000) { a[1+n]=min4(2*a[p2],3*a[p3],5*a[p5],7*a[p7]); if (a[n]==2*a[p2]) p++; if (a[n]==3*a[p3]) p++; if (a[n]==5*a[p5]) p++; if (a[n]==7*a[p7]) p++; } { fscanf(input,"%d",&n); if (n==0) break; printf("the%d",n); if … |
| | am trying to figure out how to insert a new number in a linked list after a specified number...i am failing to figure out how to fix in the number in the list...here is the partial code..any help is appreciated [code=cpp] void insert(detailsPtr& head) { detailsPtr prev, current,tmp; int num,curr_num; … |
| | Hi there, I am very new to C++ so please bear with my what is clearly terrible work I am trying to figure out what should be (I think) a simple program that will check a couple of pieces of information and tailor an output based on the input, if … |
| | I am creating client-server application. client sends text file through `sendto()` function to server. Problems are following-- 1>At the server i am writing into new abc.txt file. but problem is it writes some garbage data also.... server side function ---- char RecvBuf[22610]; int BufLen = 22610; recvfrom(RecvSocket,RecvBuf,BufLen, 0,(SOCKADDR *)&SenderAddr, &SenderAddrSize); …  |
| | ok after somet time im now ready into breaking my code apart into 4 class Sports,NBA,NFL,MLB, here is the original code [code] #include <iostream> #include <fstream> #include <string> using namespace std; // definition of strct that will hold all information of match struct Match { string Season; string Team1; string … |
| | Hi There I used to develop C programming some 5 years back using Visual Studio. Now I am on my way to develop C++ using Visual Studio .Net 2003. I started of to create new project, there are numbers of different type to choose (Win32 Console Project, Console Application (.Net), … |
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