49,757 Topics
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| | How do I make a floating point arithmetic more precise? Let me show the code first, it probably can explain my question faster than in words. [CODE] int main() { double n = 0.0; while (n < 2.5e-9) { // perform some operation n += 5.0e-9; } } [/CODE] Looking … |
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| | Well to start let me say that I'm only a newbie, as my status says, but after a year of C++ I have what I consider a pretty good grasp over the basics of the language. I'm still at school for the summer doing an internship and have a lot … |
| | 1 4 15 7 8 10 2 11 14 3 6 13 12 9 5 ☺ As you can see there is a ☺ at bottom right corner. After implementing the program the above box will display (lines may not be displayed). Allow the user to hit any of the …  |
 | I don't understand what is happening to my program... I have a feeling that private members are marked private for a reason, because I'm having a serious error with accessing base-class data types via inheritance and declaring friends within classes... If you run the test program after attaching the header … |
| | Right now I feel fairly unlearned with dynamically allocating memory... even after doing so several times and doing projects that require one to dynamically allocate memory for classes and primitive types. Basically, how does one research allocation for different scenarios such as... [code=c++] #include <cstdlib> #include <iostream> using namespace std; … |
| | I have a project that builds in a static library, using visual studio 2005 When I build it in debug mode it all goes fine, but when I build it in release i get the following error: Error 2 error C3861: '_SCL_SECURE_VALIData': identifier not found in file xtree I disabled … |
| | Hi I'm pretty new to programming started about 3 months ago, and even though I feel I'm getting better, I still find it not easy at all, I got especially trouble with that code, look I want to put into an array of strings sentences with spaces, etc. At last … |
| | I don't no which way to go, get Emu8086 to link to Visual C++ or Visual C++ to Emu8086, I mean I just don't know how to link it, I think Visual C++ links easily to MASM, yet I need Visual C++ to compile to assembly and then Emu8086 to … |
| | [CODE] double indexLowTemp() {ind=1; for (a=0;a<col;a++) {if (low<=temp[a][0]) {low=temp[a][0]; ind=a; } } [/CODE] |
| | Hey guys i need some help. I have a txt file which looks like this: 234 56 123 34 456 56 7 45..... 123 3 34 56 56 67 67 2..... . . . Where each line represents a series of points in coordinate system, and the first number in … |
| | Hi everyone, A couple of questions, please. 1) In my Airports class I am trying to get input data from a text file and put it inside the variables of an airport object that I'm going to create. 2) Then I'm going to try and store my Airport objects inside … |
| | hi... I am a 2nd yr cse student from IP university....can any1 let me know how we can assess a database using a c++ program???  |
| | Write a program which consists of four functions called from the main( ). The first function will display the user heading; the second function will prompt the user to fill an array of strings (a two dimensional array of char) with a number of words and indicate the preference for … |
| | Hello, I need help in my application development. I'm actualy working on editor for simple 3D App, and I need to add window for rendering 3D content into the editor. But as many of you know, 3D apps have the while loop keep rendering. So if I create main editor … |
| | I am practically done with this project but got stumped in one area I am trying to use operator overloading and multiplying 2 to the complex number. Since I used operator* already, how do I call the operator with 2* complex no? How do I write the code for it? … |
| | I'm trying the following code to combine ints, and then get the original ints back: [CODE]#include <iostream> using namespace std; int getleft(int n){ return (n >> 24); } int getright(int n){ return ((n << 8) >> 8); } int main(){ int i = 15; int j = 28515; int combined … |
| | Hello everyone, I have a project which is to find the permuted index of each word in a textfile. Im restricted from using STL btw. I read in input.txt and have to output each word and corresponding line number and if it is found multiple times, it will have (numoftimes) … |
| | I'm lookin' for a way to retrieve data from a remote xml feed, and store it as a variable.. Any ides :)? thanks in advance |
| | I just recently started coding and have really taken quite a liking to it. I enjoy it very much and hope to get better as soon as possible. I have a couple questions that I would like an answer to start me off. 1. I want to write a program … |
| | I'm being asked to make my default constructor "interactive" by having it prompt for an input and store the three phone number pieces you see below. They are strings, and they get called for display in main with the telnumber yournumber piece of main. How would one do that? [code] … |
| | Hi, I'm trying to read in a section of a line from a file, and to compare that to an integer. I know that the piece I'm reading in will be 3 numbers (xxx) and be followed by a space. It will also be the first entry on each line … |
| | I've got something like 400 lines of code at this point, and I realize that not too many people will be inclined to look at it. Thankfully, the majority of it works swell, and I only need part of it examined. I realize that my use of vectors is not … |
| | hi, i was wondering if anyone could help me out with this. i'm getting a compile error like this: [C++ Error] TestDriver.cpp(26): E2285 Could not find a match for 'Airport::Airport(char *,double,char *,FlightsTL)' i'm really sorry about this but the code is a bit lengthy. it comprises of two header files … |
| | Hi people I'm in urgency, I got an exam on monday with C++ and I might get a thing like there is a sentence like "Jack went fishing on monday", and I need to count the number of "m","e","a"s etc in it, I suspect you got to type a string … |
| | Hello, I'm new to C++ and am trying to figure out how to make my program run over and over again until the user chooses to quit. Any advice would be appreciated. Thanks [code=cplusplus] #include <iostream> #include <cstdlib> #include <string> #include <math.h> #include <windows.h> using namespace std; int num1, num2; …  |
 | help plz...I have to create a program that multiplies matrices...those elements in the array must come from a file or reads a file...I have constructed these codes but this program lets the user type their number, not read from a file..I have these code so far...[CODE]#include <cstdlib> #include <iostream> #include … |
| | Hi, i am new to c/c++ and i need to execute external cabextract program to extract archive, but if i sprintf command and file name to command variable i get segmentation fault. How i need to modify code to avoid segmentation fault? Here's an example: [CODE=C++]void cabext(const char *fname) { … |
| | Is it possible to make the window block thing in your toolbar flash when an event happens? i couldnt really think of what function would do this. |
| | [CODE=cplusplus] #include<iostream> using namespace std; int intro(); double getData(); double averageHigh(); double averageLow(); double indexHighTemp(); double indexLowTemp(); double table(); double i,j,hsum=0,lsum=0,aveh,avel,high=0,low=0,ind; int const row=2,col=12,num=12; double temp[row][col]; char month[20][num]={"JANUARY","FEBRUARY","MARCH","APRIL","MAY","JUNE","JULY","AUGUST","SEPTEMBER","OCTOBER","NOVEMBER","DECEMBER"}; char space[]=" "; int main() {getData(); table(); averageHigh(); averageLow(); indexHighTemp(); indexLowTemp(); return 0; } int intro() { cout<<"||||| |||| ||||| |||| |||| … |
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