49,757 Topics
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| | Hi there, Say I have the following while loop, that loops on the condition that a lne (a string) is received from a file: [CODE]while ( getline( inData2, line ) ) // Increment rows till none left { if ( !line ) { cout << "No data entered. Please enter …  |
| | i have written my code and feel exhausted. when my code finds in error on a given input text file, it does a great job in finding the mismatched symbols. what can i add to show there is no error when no error is found. i attempted adding another else …  |
| | Hey Guys, I am new to the concept of Arrays and I need a little help. I have included the instructions for the problem as well as the code that I have so far. Can you help me with what I am doing wrong? Thanks! Write a program that asks …  |
| | Hi guys, I'm getting " SingletonMain.C:18: undefined reference to `Singleton<MyClass>::instance()' " compiling error. It doesn't make sense to me because MyClass inherits instance() from Singleton, doesn't it ? If someone could shed some light on it, I will be grateful. SingletonMain.C #include <iostream> #include "Singleton.h" using namespace std; [CODE]class MyClass … |
| | Hello I need to create an array of pointers for class dog is one class and showDog is the derived class. I need to input from a data file and store the variables to these classes. In the file there is a D for dog or S for showDog between … |
| | Hello everyone, as you can see I am new to this forum, I have had, not huge experience, but a bit of experience with c++. So I decidedt to make a keylogger. I know there are other ways to make this code shorter but for now i would like to …  |
| | Hi, i'm having some problems with my inheritance homework. It consists on writing a progrma that mimics the String lib by overloading different operands and then create two derive classes that will revert a string and that will change the cases to lower and upper. This is as far as … |
| | /* Write a program the nested for loops that display the output below. 0 0 1 0 1 2 0 1 2 3 0 1 2 3 4 0 1 2 3 4 5 */ [code=cplusplus] #include <iostream> #include <cmath> #include <cstdlib> #include <iomanip> using namespace std; int main () … |
| | Hello everyone I'm having a little difficulty, hopefully you guys can help or point me to the right direction. I'm trying to get a pointer from a class point to another pointer from another class. Naturally it doesn't work because the assignment operator doesn't allow us to do this so … |
| | Hi, I have completed a C++ application.It is about 3.5 mb in size. I need to create a demo version of this application,The application should not work after 30 days of installing and using it.. Is there something any software that allows you to create demo versions or what steps … |
| | Okay, here's the challenge, I know its probably pretty easy, but i'm just starting to learn and I have the challenge problem that I can't figure out, any help/guidance would be appreciated! This program will accept two numbers from the user and display the sum of the square roots of … |
 | I am getting a segmentation fault when i run the follwing program. This program takes in a const char* and returns the integer format. I also need advice on converting a C++ Octal or Hexadecimal Notationed string to an integer. Here is the code [CODE=C++] #include <iostream> #include <cstring> int …  |
| | Hey all. First time user here :) Im making a Windows XP C++ console application with Code Blocks (GNU GCC Compiler). This program is written to control another program that is missing some features i need (read input from external source). Last thing im missing from my program is little …  |
| | I'm writing a simple number generator program and I'm trying to find an easier way to get a random number, store it then display it. The catch is I don't want duplicated numbers (each need to be different). here is what I have so far, it does work but I'll … |
| | Hi, I am having a problem with the following function: [CODE]void calcEnergy( vector< vector<double> > &Energy, vector< vector<double> > &Data, const double Constant ) { double Time = 6; // store the change in time double energy ; // Temp variable to store energy double v1,v2; for ( size_t i … |
| | Hi there, I have an array of strings defined in the following way; [code] string wordbank[]={"yes", "no", "hello", "goodbye"}; [/code] My problem is I would like to create a seperate array of characters for each element of that array. Something of the form; char *word_0[]={'y','e','s'} The things I have tried … |
| | Hi, I wish to know that the cause of the following error when i run the program : a) Is memory leak in the program B) The system on which i am running the program has insufficient memory. [ICODE] terminate called after throwing an instance of 'St9bad_alloc' what(): St9bad_alloc[/ICODE] Thanks |
| | In the following program, implement the function a. int *biggest(int *a, int count); This finds the largest element in an array of integers. #include <stdio.h> #define SIZE 16 int* biggest(int *a, int count); int main(void) { int values[16] = { 47, 17, 38, 91, 33, 24, 99, 35, 42, 10, … |
| | I tried searching the forum, but I couldn't find any threads that really dealt with what I'm trying to do here. I have a struct set up with three fields (shown below). [code] struct StudentInfo { char id[10]; double mark; char grade; }; [/code] [I]Note that the id MUST be … |
| | can someone teach me from the basics how to use and become comfortable with graphics.h???plz i need it badly for my project at school and out of my interestto complete my project within august.im unable to continue without graphics.h and dos.h |
| | This is my first year of BIT and im doing C++ for first year atm. Now i have this assignment which is i have to generate random number, and prompt the user to quess the number. when they quest it right i have to prompt that they are right and …  |
| | Can you tell me how to resolve my problem. i can reserve the matrix A and B into file, but how to read , i can't remember...above, shows what i pretend to do.. # include <iostream> # include <fstream> using namespace std; int main() { int matriz[3][3]; int x,i,j;//variables for … |
| | Write a program to implement a survey that prompts respondents to enter an integral value within a specified range to indicate how they like a new product. Since the program must be adaptable to any arbitrary number of respondents and value ranges, define macro MAX_RESPONDENTS to represent the maximum number … |
| | [code]#include<iostream> #include<fstream> #include"d_nodel.h" using namespace std; void merge(dnode<double> *, dnode<double> *); //free function to merge the two lists int main() { dnode<double> *listA = new dnode<double>; dnode<double> *listB = new dnode<double>; double sz1, sz2; int val1; //first set of integers int val2; //second set of integers ifstream inFile; //declares the … |
| | Ive used the search function just found one thing I needed more detailed help I need to a read file of float numbers no more than 100 numbers but can be less than 100 into an array I have made sample file contain 1 2 3 I have the following … |
| | If I have a class that has a vector as a private member, a get function to access the vector, and I iterator over the vector, the iteration only works correctly if I make a new copy of the vector: [code] class MyClass { public: typedef vector<int> Vector; MyClass(); ~MyClass() … |
| | I have everything almost done, the only problem I have is that I can't seem to get the linked list to advance when the terms start out with different exponents and instead of just printing the results I will tie them into a third list. Can you see what I'm … |
| | can someone help me complete this code please, on the ares i put comments please. thanks #include <stdio.h> #include <string.h> class wordRecord { public: char* word; wordRecord* next; void printWord() { printf("%s\n", word); }; }; class abstractWordList { private: void printWordsHelper(wordRecord* wordRecPtr) { if (wordRecPtr) { // Code omitted to … |
| | Write a program to implement a survey that prompts respondents to enter an integral value within a specified range to indicate how they like a new product. Since the program must be adaptable to any arbitrary number of respondents and value ranges, define macro MAX_RESPONDENTS to represent the maximum number … |
| | Hello, I'm trying to get the STL equal_range function to work on a data structure I've designed, but I may be trying to use the equal_range function in a non-standard way. Is there a way to get this to work? Basically, I have a vector of vectors of structures (elements) … |
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