51,593 Topics
 | |
 | hello; while downloading the Microsoft visual C++ from a CD , a massage appers to me saying that it can not read a specific file and then another massege after the installing complate saying that the installation was not sucsseful the problem start then in the program it self , … |
 | Hi guys, I need to understand the concept of inheritance in Oops. Can any one explain with real life example the use of inheritence to enhance a super class. It will be very helfull to me if you can explain me the use of inheritence to build a simple car. … |
| | i wanna know how to set an certain number with commas, for instance if i had this [CODE] #include <iostream> #include <iomanip> using namespace std; int main() { int numItems; double total; const double costOfItems = 1050; cout << "enter number of items "; cin >> numItems; total = costOfItems … |
| | I have created an iterator for a vector and i need to create a return type for an object found in the vector. vector<Student>::iterator StudentRecord::find(const string& studentName){ vector<Student>::iterator find; for(find = students.begin(); find != students.end(); find++) { if(find->getName() == studentName){ return find; // Not sure if i am allowed to … |
| | hello i am building an application in Visual c++ 6 and i want to save some variable values. i tried in all ways, until i try just to save a value that i declared right in the "Serialize" function of my CDocument class : [code=cplusplus] void CDiplomaDoc::Serialize(CArchive& ar) { r=3; …  |
 | is there a package for c++ that will allow me to make a matlab/gnuplot style plot from within c++? I would like to skip the step of writing data to a file and then using something else to read in the data and then plot it. Let me know what … |
| | |
 | Hello, This thread is not about you solving my homework, infact i only go to secondry school so don't get it, this sounds weird but can you give me some homework examples brcause i want to learn C++ and i think it may help, please reply a.s.a.p :). ~ Black …  |
| | 1. How do i convert an object (students) which is of type string into a string. 2. How do i remove all characters from a string after a space character. ie. i want to read an Object eg. "WILSON","MBCP" convert it to a string and then remove "MBCP". Then i … |
| | Write a program to add or subtract two big integer numbers. “Big” refers to a number which is more than 30 digits. You can assume that the number may have MAXIMUM 100 digits. Your program should have the data structures to hold such a big number. Also it should have … |
| | I have a header file called StudentRecord.cpp which declares the function: vector<Student>::iterator find (const string& studentName); In my Student Record.cpp file i have written the folloing code: vector<Student>::iterator StudentRecord::find(const string& studentName){ vector<Student>::iterator find; for(find = students.begin(); find != students.end(); find++) { if (students[find].getName() == studentName) { return students[find]; } else … |
| | right now i am working with Turbo Borland C++ compiler...however now i want to have a try on GCC compiler too... so where would i get it?? can anybody provide a reliable link to a GCC compiler??? :) |
| | Hello, and thanks in advance for your time! I am very new to C++, and am attempting the classic squares program. I have the meat of it all done, but am having issues with a few certain parts. First, I can't figure out how to do the sentinel value. I … |
| | Dear c++ gurus, I'm new in creating a header file. never try before. ERm... i have write a header file with a program: [code] Header file: MySensor.H extern short int DetectSensor(int sensorvalue[10]) { ....; } [/code] [code] Program file: MyFile.C #include <MySensor.H> short int i; int p, sensorvalue[10]; int getsensorvalue() … |
| | hey : i am working on simple engineering application but i have some problem i want to draw X-Y axis Then put any point on it . Then i want to translate this point ∆x=5 , ∆y=12 After that i want to rotate it by angle (∂) degree then i … |
| | |
| | just practicing for fun on some problem i saw posted on yahoo answers,mathematics section problem: xyz times pqr = some number x,y,z,p,q,r should be 2, 3, 5, or 7. and some number's digits should also be made up entirely of 2, 3, 5, or 7. solution: 335 x 753 = … |
| | I wonder something about what is happening when I sort this vector. I put some number into the vector like below. After the sort the output look like this. 3 2 1 -3 -2 -1 What I want is that the output instead will look like the below example. Like … |
| | hi fellows... I have a little problem, in Unix there's a library called unistd.h that have the function "link" and as its name says, creates a link of a file.... I want to use that function in windows, but i only found the "_unlink" function in the io.h library, this … |
| | I'm making a text adventure game, and it's actually coming along quite nicely...the only thing is, I want to be able to return to the previous screen whenever I want. Say that in my game, I go north. I want to be able to go south, back to my main … |
| | hello! i have problem with program i made: the program should define a pointer to pointer which points to dynamic array of Grade (class i made). i increase the size of the array in function. so i made a new pointer to pointer which point to array of Grade (the … |
| | hi i have the following hex string 40 E3 4E DA 04 2B FE 7C and i need to convert this to 39541.813009259260. I believe this is a hex to ieee float conversion. I thought that it was a case of viewing the hex in binary format the inverting the … |
| | |
 | So I'm a new programmer and I'm SO close to finishing this code. I want to return an array from a function, and every thread that I've looked up has said I need to return the data as a pointer TO an array. How is that done? Also, I'm working … |
| | is it possible to use fstream without using classes and structures since everi time i encountered a fstream code i saw this classes and structures used...im not into the portion of classes ...could anyone help me out in this case!!???? |
| | #include <boost/config.hpp> #include <iostream> #include <vector> #include <utility> #include <string> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/graph_utility.hpp> #include <boost/property_map.hpp> #include "ed.h" #include "ve.h" using namespace boost; using namespace std; class Molecule { map<int,string> m; public: void set_molecule_property(vector<string>& s4) { for (unsigned int i = 1; i <= s4.size(); i++) { m=s4[i-1]; } } … |
| | Hello All: Can anyone give me a simple idea how to remove the duplicated letters in a text if I have this word HELLO it must be HELO..... Thanks in advance..... |
| | I am using TURBO C++ IDE 3.0..i am able to execute the program that are related to graphics. but the problem i face is when i get the output i am not able to capture the output using print screen key.the output is a black DOS screen and is not … |
| | Dear c++ guru, I am using cygwin to create a c++ environment for my Lego RCX. I have create a program file in c++ format. when compile with cygwin, it shows: [code] file.ds1: line to short on line 324[/code] can anyone help explain to me what is it? I am … |
| | I am creating a graph using boost library, I am making the network using create_Network function() i am adding the vertices to this graph by creating the object g of class Graph. I am trying to use this object g in the another function get_neighbours() but it is not giving … |
| | |
| | hello. i have a set of 50 points. (array of 50 objects (arrayOfNodes[]) having x, y locations and distance and nearest neighbor and neighbor table ). The points are given X-Y location randomly in a range of 300 X300. and there is a center point called BaseStaion (BS). For every … |
| | Hey I'm trying to get this code going but i can't get my if(choice==2) to output anything any ideas? #include <iostream> #include <iomanip> #include <algorithm> using namespace std; int main() { int i,num[20],n,j,choice,tmp; cout<< "Please enter 20 integers"; for (i=0; i<20; i++) { cout<<"\nEnter next value:"; cin>>num[i]; } cout<<"\n1.Display original … |
| | Hey guys i'm working with this code but i can't get it to stop looping back into the menu any ideas??? Thanks !! [CODE=cplusplus] #include <iostream> using namespace std; unsigned int menu(); int main() { int i,num[20],sec[20],j,choice; cout<< "Please enter 20 integers"; for (i=0; i<20; i++) { cout<<"\nEnter next value:"; … |
| | I have a class called MyClass in main, I have [code] MyClass A; //calls the default constructor A.date = 4; [/code] I would like a function to do some stuff and then use one of A's constructors , the result being I have A back in main [code] class MyClass … |
| | Hi, I have a question: What is the mysterious beep on a console program? I made a program that reads a *.exe file then displays it on the screen. I got a massive amount of beeps! Another example of a mysterious beep is: Open Command Prompt, Press Ctrl+G, then hit … |
| | MMmmmmk so what i am trying to do is simply throw a the ERROR object from the Array<T>::operator[] and catch it in main take a took... it prints out the equivalent of an empty space in memory. [code] //error.h class ERROR { public: ERROR(char * Incomming) { m_message = new … |
| | Hi, I made a simple program that copies files. I tried to copy an exe file, but after I tried to run the copied version, it doesn't work properly. Please help:?: Here's the code for the test file to copy: [code=C++] #include <iostream> int main() { std::cout << "Hello!"; std::cin.get(); … |
| | hello, I am trying to pass the array songID[numSongs] to the function playRandomSong. What am i doing wrong? The compiler is telling me "error C2660: 'playRandomSong' : function does not take 1 arguments" [CODE=C++]#include <iostream> #include <string> #include <fstream> #include <iomanip> #include <cstdlib> using namespace std; const int numSongs = … |
| | so i been using i/o streams and i understand how to open, check to see if file fails and close files but i cannot understand how to change it to something new i g2 do these, Change dashes to spaces. Change all characters to lowercase. Change digits to * (asterisks). … |
| | Write a C++ program that reads from keyboard 3 words, with proper input prompt. Then for these 3 words that were read, the program displays first the word of the longest length, then the word of the shortest length, and finally the remaining last word. You may assume that these … |
| | Hi guys! I'm beginner on the scene and I'm trying to make an ascii maze game. I have managed out how to get the character to move and how to make a goal where to go. But now I have faced a problem...the walls. I'm not sure how should I … |
| | Hi everyone. I was wondering what is the best way to check if a text file is empty? When I read from a text file: file.Open(path, CFile::modeRead); And then try to access it: file.ReadString(line) I get an error.. I have tried if 'file.end' but file.end returns true every time so … |
| | Any hints in converting this C++ code to java [url]http://pastebin.com/f2db2b32e[/url] I have pretty good idea what is going on in main () , but I not sure about the top template part and the class called Moron :) The program just reads a text file counts up the frequency of …  |
 | Hello! I have a string which may look like this: (arne kristoffer)(1231232)(12.12.12)(asdasdf 12) This is just an silly example, but never mind. THe point is that i need to seperate the contents of the string into a string vector. This is my code (which of course doesn't work, if it … |
| | [B]help me with this program :[/B] [code=cplusplus] #include <iostream> using namespace std; #include <math.h> double F(double x){ double res = pow(x, 9) - pow(x, 7) + 2 * pow(x, 2) -1; return res; } void print_roots(){ double low = 0, high = 1; for(int i = 0; i < 1000 … |
| | [code=cplusplus] #include<stdlib.h> #include<stdio.h> #include<conio.h> #include<string.h> #define ff fflush(stdin); void main() { int r; char str1[10], str2[10]; clrscr(); printf("Enter password:\n"); gets(str1); ff; printf("Re-enter password:\n"); gets (str2); ff; r=strcmp(str1, str2); if(r==0) { printf("Enter"); } else { printf("Exit"); } getch(); } [/code]  |
| | Here I am putting 2 Number into a std::vector<double> and sort these numbers like this. When putting Number1 and Number2 wich are declared variables into the vector, the Number 5 and 10 are put into the vector. If I after the sort write this: Numbers[0], this will give me the … |
 | [CODE] ResourceManager(void (*CreateResourceFunction) (Type** resource, char* name, char* path) = NULL) { m_list = new LinkedList<Type>; CreateResource = CreateResourceFunction; }[/CODE] hey - this is code for a contructer for a class (taking the code from a book I bought). What exactly is the parameter of the function? Is the parameter … |
| | I want to read a file which is in the same folder as my program. What is the notation to get the current folder? I tried '.' but it doesn't work. |
The End.