49,767 Topics
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| | Want to ask how to detect new line For example, I need to read in a text file in this format John 123 Y 1 abc def ghi Jane 456 N 1 xyz Jack 789 N 1 xxx xxx how do i detect the empty line and read in the … |
 | I have been working on this problem so much, I have started to think in Binary. what I am supposed to do is put User defined numbers in acending order. Here is what I tried. (please dont laugh) [CODE]#include <iostream> #include <iomanip> #include <vector> using namespace std; void testSort(int [], … |
| | I am working on a program (using MS Visual Studio 2005 professional) and have incorporated some Standard Template Library vectors. The program is very math intensive. When I run in debug mode, the debug checking provided by STL slows the program to the point that I am getting no work …  |
| | We have a need to modify a program on a DOS machine written in Borland C++ version 3.1. Our customer threw away the Borland manuals some time ago. In particular we need the manuals detailing how to use the compiler in DOS. Help anyone? Thanks. Roy |
| | this is a c++ program. ok. so this is my problem where i am supposed to get data from one file, read it in and make the proper adjustments to it, and output it on to another file. i'm supposed to use structs. the input file has this data: 348 … |
| | Hi, I wish to output a string from a textbox to another file, here is what I wrote: [code] FILE*myfile; myfile=fopen("D:\\Profiles\\DqGw47\\Desktop\\hello.txt","a"); fprintf(myfile,"%s\n",textbox1->text); fclose(myfile); [/code] In my hello.txt: Set wallpaper= My problem is how can I control where to fprintf my string. In this example, how can I output the textbox … |
 | After read this file , i want to do a selection sort...below are the selection sort programming that i get from google [CODE=C++] #include <fstream> #include <string> #include <iomanip> #include <iostream> using namespace std; void sortData( string fId[], int noOfRows); int main () { string Id[100]; int total[100], i = … |
| | hey im trying to compile a c++ operating system but dont really understand the compile instructions! the instructions are in readme.txt! can any one help me please? mabe make them a little more simple? cheers [URL="http://www.programmersheaven.com/d/click.aspx?ID=F39294"]download link[/URL] |
| | okay i'm working on a very complicated problem (for me anyway) and i know i'm missing something somewhere. i need to be able to store data into an array but i don't want it looping right off. this is the structure for the data i need and my function headers. … |
| | I have an assignment. I have to ask the user for a string to search for in a file. The program reads each line of the file and compares each string to the user's string. It then displays the line of the file the string was found on. Lastly, I … |
| | well im writing a program where the user enters a number from 2 to 1000 and it displays the prime numbers. Its in a loop and i want it to stop when the users enters 'n' or 'N' well when i type n or N the program goes crazy haha. … |
 | I ran this: [code] cout << "has nan q?" << numeric_limits<int>::has_quiet_NaN << endl; cout << "has nan s?" << numeric_limits<int>::has_signaling_NaN << endl; cout << "has nan q?" << numeric_limits<double>::has_quiet_NaN << endl; cout << "has nan s?" << numeric_limits<double>::has_signaling_NaN << endl; [/code] and I get 0 0 1 1 why would …  |
| | This code is in Unit1.h [CODE=C++] struct gydytojas { int gydid, amzius, specialyb, telefonas, asmkod; String vardas[25]; String pavarde[35]; String adresas[50]; friend ostream& operator<<(ostream& os, const gydytojas& obj) { return os; }; friend fstream& operator>>(fstream& os, const gydytojas& obj) { return os; }; }; gydytojas gydmas[100]; [/CODE] And this code … |
| | I can't seem to figure out whats wrong. This isn't a finished program but it should compile anyways. [ICODE]#include <iostream> #include <string> using namespace std; const string SENTINEL = "\n"; int main () { char letter; int letterCt; cout << "Enter a line of characters" << endl; /* TO BE …  |
| | I have a textBox that I with help of a Button turning to a Gray BackColor like this. textBox1->BackColor = Color::Gray; Under this textBox I have a checkBox. *(with default "checked").* What I am trying to do here is that when I "uncheck" this checkBox, the textBox will turn "Red" … |
| | Last question for today before you start hating me.. I don't know if this really belongs here, but I'll post here anyway. How do I make my programs stay on command prompt longer? Usually they just flash for a second if I don't open them up with command prompt. Heres …  |
| | Hi! Suppose i have a polygon with 5 points. They are constant. I use "gotoxy()" to define the point positions. Something like this: [ICODE] x1=30; y1=10; gotoxy(x1,y1); cout<<"A"; x2=50; y2=10; gotoxy(x2,y2); cout<<"B"; //.....and so one up five [/ICODE] Now i should to give a another point (X,Y), and calculate with … |
| | i want to make a error check on each input. if i only got 1 input.. then i just use while(input==false) so it will continue ask user to input if he wrong input but if i have many input,then the while loop will complicated.. for example: Enter ur gender Enter … |
| | Hi I'm using VC++.net 2.0 an creating a few technical indicators for grad school. I am having a problem creating the aroon indicator and I would appreciate some help. Here is a description of what the Aroon Indicator is : Aroon(up) = ((total_num_of_periods - num_of_periods_since_highest_close) / total_num_of_periods) x 100 Aroon(down) …  |
| | hi, i need a stl list to read a vector. I have a vector "vec" and i want to create a stl list, where i can insert new points to the vector list and remove. |
| | How do I convert text in upper case to lower case? :?: |
| | Alright, I'm probably going to become the biggest pain in the butt here during the days to come, but please bear with me. [code=Cplusplus] #include <iostream> int Subtract(int first, int second) { std::cout << "In Subtract(), recieved " << first << " and " << second << "\n"; return (first …  |
| | Hey, I'm using SAMS teach yourself C++ in 21 days, and currently I am on Day 2, however, I've gotten a lot of errors whenever I compile even though I type out the examples exactly as they should be. I'm using Borland C++ Compiler. command line tools or something like … |
| | Hii everyone !! Can anyone creat class delta.h for me ! Its about dirac delta function ( for 2d) . a simple one. Looking urgently. Regards, |
| | Hello, all, I am pretty new to C++ and I need to write a program for calculating radio propagation path loss based on ray tracing, C++ is used for its faster processing rather than MATLAB. I have a question about passing 2D arrays between functions. One of the files looks … |
| | I have an assignment due tomorrow and I've done a bit on it but I dont know how to do the rest. Can anyone help me please. Thanks. |
| | Hello, this is my first time posting here so im sorry for doing anything wrong. Also I am kinda new at programming so bare with me. I am currently working on a function that basically reads a list of double values and assigns them to an array. But I ran … |
| | We have a socket program written in standard c++. Could anyone tell me about what are the test cases i should do? |
| | hi, where i could get the wsock32.lib and ws2_32.lib files. please help me |
| | Hello ALL my first post! hope get a quick reply. I am doing a for loop to display a array of strings . my problem is formating and organizing the display . i use cout << and setw() , but the problem is : the names is different lengths is … |
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