51,593 Topics
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| | hey guys !! i am new at c++ so i need a bit of help .. i am trying to solve different problems but i am stuck on this problem .. write a c++ function , smallestindex that takes as parameters an int array and its size and returns the …  |
| | Aim of the program to is read to Atmega board, which has portb which is l.e.d . When the input of +25 , it will move the stepper motor forward 25 , and negative -25 move it back. I got stuck after reading the +/- and argv1. any tutorials online … |
 | hello, i'm confused here. i have an assignment that required me to create a project registration program that have student, project and supervisor. i haven't start to do it yet. but i've gone through the question. there's a part of the program that need to list out the student's, supervisor's … |
 | No, this is not an assignement. Recently I decided to pick up writing code again and the project I started writing I came to a rode block with something that I never learned in class (I don't think). How would I be able to write this better (should I stick …  |
 | Hi, I'm hoping someone might be able to help me with what I think might be a simple problem. I have came across the need to add to an unsigned char array a literal single quote "'" My question is how can I achieve that? unsigned char uArray[4]; uArray[0] = … |
| | Ok im new to C++ so please help, so I have this line of code. SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 3); cout << "Congratulations your power level is now" << PowerLevel << endl; insted of typing this all the time can i just add it to another cpp file and just reference it or …  |
| | Hi all, I am having trouble getting a tree to and from a text file. The text file will hold questions and animals. Each node should hold one question and one animal. So if you can imagine: Does it have 4 legs? / \ Does it purr? Does it swim? … |
| | hello, im having troblue getting my linked list to show everything on the list. it only shows the first node, and nothing afterwards. #include <iostream> #include <string> class list { private: struct node { std::string name; std::string phone; node *next; }*head, *tail; public: list() : head(0), tail(0) {} ~list(); void … |
| | i am having difficulties in creating an **array** that holds marks for three students each having a set of five marks, this program should allow the user to input the marks per student ,** then calculate the highest and lowest mark for each student** |
| | In the below programme i use one boolean variable named check , which is being accessed inside main function by two objects of Tst1 and Test2 . But the value of check variable is not maintained in the programme . we can use static but i want to know some …  |
| | #include<iostream> #include<cstdlib> #include<fstream> using namespace std; int main() { int n=3; float total,wait[3]={0}; float p[3],twaiting=0,waiting=0; int proc; int stack[3]; float burst[3],arrival[3],sburst,temp[3],top=3; for(int i=0;i<n;i++) { p[i]=i; stack[i]=i; cout<<"Enter arival time : "; cin>>arrival[i]; cout<<endl<<"Enter burst time: "; cin>>burst[i]; temp[i]=arrival[i]; sburst=burst[i]+sburst; for(i=0;i<sburst;i++) { proc=stack[0]; if(temp[proc]==i) { //temp[proc]=i+1;; twaiting=0; } else { twaiting=i-(temp[proc]); … |
| | Hi community, I wanted help in making shortest path Finder for non grid based game. Below is the image attached of which i wanted to do shortest path finding. There are nodes and each node may link to 5 or 6 nodes. I have no idea which algorithm will get … |
| | #include <iostream> #include <vector> #include <string> #include <fstream> #include <sstream> #include <windows.h> using namespace std; class Subject { protected: string sub_code; string sub_fac; public: Subject(string sub_code="", string sub_fac="") { this->sub_code = sub_code; this->sub_fac = sub_fac; } string getSubCode() {return sub_code;} string getSubFac() {return sub_fac;} }; class Student { protected: string … |
| | I want to make level editor in which I want it to have three buttons CreateNode , Reset Node Create Node - It will add node in screen Reset Node - It will reset all the links from the Node And when the node is created on window if I … |
| | I'm getting the exact output I want but I keep getting an error that says "Run-Time Check Failure #2 - Stack around the variable 'c' was corrupted." Now I have to for this assignment use strncpy, and strncat and I'm trying to append two strings togethor with the max amount …  |
 | int a = 10; int b = ++a++; printf(b); The code when compied shows lvalue error. |
| | I can't find the bug in my code. The error that pops up says "Expression: invalid null pointer". Visual studio isn't giving me any line to go to or really any help except once I run the program the error above pops up. The weird thing is everything compiles correctly … |
 | ...Just run the program and you'll know whats wrong with it...it gives a -1 value... #include <iostream.h> #include <conio.h> void main() { int array[10],key; cout<<"Enter 10 elements:\n"; for (int c = 0; c < 10; c++) cin>>array[c]; clrscr(); cout<<"\n List of Elements:"; for ( c = 0 ; c < … |
| | Hello, I am trying to fill an array with 20 unique random values between 1 and 60. I know what I need to do to get this to work, but I'm not sure how to do it. Here's what I've got: void fillArray( int arr[], int size) { int arr2[20]; … |
| | I'm creating 7x10 array that filled 0's unless it is copied by ships.Currently I'm having a problem in which I'm not sure how to place the ships inside this grid. this is how i've created the map. Please help as I'm a very beginner in c++. Thank you. void displayBoard() … |
| | I am having TurboC installed in my system. Whenever I try to run a program written in C++ using graphics.h, the screen goes blank and my LED monitor displays a change to VGA mode and suddenly displays "NO SIGNAL" and return to normal mode when I press "alt+ctrl+del" only. I …  |
 | Hi Everyone! I'm a user of Turbo C++ and my professor gave me an activity to make a Fibonacci sequence. No I already have the Code for it and it is working. The only problem is. I don't know how the FOrmula Works. I will show you the Code below: …  |
| | Good day! I knew this is easy to all of you guys. But I need the most precise way to parse this string "**45:50"** and store the result in **two dimensional array with int as datatype**. The delimeter is "**:**". Thank you! |
 | I'm trying to write a simple sqlite query in c++ using visual studio 2010. My problem is that i can't use a c++ variable inside that query. I was not able to find the right syntax. `sqlite3_prepare_v2(handler, "SELECT * FROM grammateas WHERE username==X;", -1, &statement, 0);` where X i would … |
| | I wrote the following code to test which is faster: performing a multiplication and division many times, or accessing the results in a vector via iterators(perform the calculations ahead of time), or hard coding the results of those calculations into the program. I actually expected storing the results in the … |
| | I was thinking about somehow using a static member that all the matrix cells will be defined by their value + the static value. but than i thought how can i do it? what is the easiest way of doing so without the need to run over the 10^6 cells? … |
| | I like to have the name of the current method for logging purposes. For example: string Commands::test(StringTokenizer& tokens) { static string src("Commands::test"); ... _log.debug("message", src); } I'm worried that creating 'src' might cause a performance hit. I made the string static thinking it would only be constructed once, the first … |
 | I am trying to make a program that generates a random number and asks the user to input the random number generated by the computer. Anyone know how to do this? This is my program: #include <iostream> #include <cstdlib> #include <ctime> using namespace std; int main() { int one; time_t … |
| | 4B 50 7B F1 F4 F5 5E 50 7B F1 F4 F5 5E 4B 4B 4B |
 | Ok, so, this code snippet is a reply to this thread: http://www.daniweb.com/software-development/cpp/threads/425821/prime-number-c From what I understood form the OPs request, is that, he wanted an algorihm which would check for prime numbers in a given range, applying these conditions: a number is to be considered valid if: a. the number … |
| | Using cout to produce output - double space = 4.0 - 1.9999999; cout << space << endl; result: 2 Why am I not getting 2.0000001 instead? What should the type be or the numbers to make this 2.0000001? Thanks  |
 | Would anyone know of a reporting toolkit library for C++ which can be compiled as part of a project. It will need to be ablue to display tables, display charts and be printable through a printer. Preferabely free though I haven't been able to find any at all. The closest … |
| | A means AMA but i cant figure out whats wrong cuz its gotta accept both capital and small letters help please #include<iostream.h> void main() { char x[2]; cout<<"What does the letter A mean in ACLC?"; cout<<endl<<"S:"; cin.getline(x,2); { if(x[0]=='A'||x[0]=='a') x[0]='y'; else x[0]='n'; { } if(x[1]=='M'||x[1]=='m') x[1]='y'; else x[1]='n'; } { …  |
| | I got this info off a website. tells u how to make a clock in C++... can anyone tell me how to make it so the PC doesn't use 100% cpu? if u look in task manager ull see <ProjectName> is using 100% cpu [code=c] // crt_clock.c // This example … |
| | Hi all, I am trying to write a CWEB c++ program that just keepsgoing until the user types 'no'. Anyway i get some errors that I can't fix. Here is the .w file (x's are comment blocks to save congestion) @* Program Skeleton @ x @c using namespace std;@; @<Header … |
| | 4B 50 7B F1 F4 F5 5E 50 7B F1 F4 F5 5E 4B 4B 4B 4B 50 7B F1 F4 F5 5E 4B 50 7B F1 F4 F5 5E 50 7B F1 F4 F5 5E 4B 4B 50 7B F1 F4 F5 5E 4B 50 7B F1 F4 F5 … |
 | Hi, Do you have any useful explanation of how to create a draggable window? What I wish to say is when you select your window will have no border ( considering that, it cannot be dragged around screen), how to make it draggable, for example by making a certain area … |
| | I am trying to make something like a firewall but it isnt a firewall it is just suppose to see all the incomming and outgoing connections of each port. And put the IP address and port into a .txt file. Basicly creating a log of incomming and outgoing connections. Nothing …  |
| | I use code::blocks as an IDE but now i want to create a .dll file. I have followed this tutorial however it is for VC++. TUTORIAL: http://msdn.microsoft.com/en-US/library/vstudio/ms235636 I am strugeling becuase I am used to creating .dlls in C#. They are so easy. You just create a new library project. … |
| | this program is running but how can i make this in two class by using get set? using System; class Program { static void Main() { DateTime now = DateTime.Now; Console.WriteLine(now.ToShortDateString()); } } |
| | Here is the c code:- #include<stdio.h> #include<stdlib.h> #include<string.h> int main(int argc,char *argv[]){ if(argc==1){ //default printf("first version\n"); int i,j,k; char line[1024],*str1,*str,str2[1024],ch; FILE *in=fopen("/proc/cpuinfo","r"); i=0; while((fgets(line,1024,in))!=NULL){ // printf("%s",line); str=strtok(line, " :"); if(str!=NULL){ //point 1 if(strcmp(str,"model")==0){ printf("%d %s\n",i,str); //point 2 str=strtok(NULL, " :"); printf("%s\n",str); //printing "name" if(strcmp(str,"name")==0) //point 3 printf("CPU Model:=%s\n",strtok(NULL,":")); } else … |
| | **Hi there, I'm new to C++ (bet you guys don't hear that very often!!) and what I'm trying to do, in a console application, is this: 1. Ask for a number 2. If the user input isn't a valid float, get angry and go back to 1. 3. If the … |
| | Okay so here's the thing...I came across a code of my classmate that i'm not familiar with...the only thing i know is the printf is the same as cout...right??can someone explain this in iosteam.h form?? #include <stdio.h> void bubble_sort(long [], long); int main() { long array[100], n, c; printf("Enter number … |
| | Dear C++ Gurus/Experts, I am writing a program to automate excel.My program is working well when I use integer (Write/Read) in excel.My program also works well when I use string.But the issue appears when I use array of strings.I am getting the issue as below **"error C2664: 'SysAllocString' : cannot … |
 | Hi there everyone... Allright my setting is this: I have written an C++ application that receives input from a user app, converts it to XML, and then posts it to our ERP (Syspro) through e.net COM objects using ActiveQt and in specific QAxObject... The problem is this: QAxObject inherits from … |
| | any idea on how to change strcpy in c++ int main() { //all the winning combination strcpy(winKey[1].key, "123"); strcpy(winKey[2].key, "456"); strcpy(winKey[3].key, "789"); strcpy(winKey[4].key, "147"); strcpy(winKey[5].key, "258"); strcpy(winKey[6].key, "369"); strcpy(winKey[7].key, "159"); strcpy(winKey[8].key, "357"); } |
| | Good day! I have started a little inheritance on my simple class that takes the addition function of two numbers on the other class but the sum is always zero even if it is not supposed to be. Here is my code so far: #include<iostream> using namespace std; class Addition … |
 | guys... teach me... a-z of ADO connetion of my sql server with VC++... soon... or.. im trapped!!! how do u enable the connection setting?? and i am using VC++ 2005.. |
| | I doesn't know why my program after enter main menu and want to call any other function will stoppped working,this is the question Write a program that is able to help a school teacher to input, manipulate and record marks of students for 8 subjects. These subjects are English, Physics, … |
| | Hey I just tried using the OpenCV for the past few hours but I keep on failing. I am a Windows 7 user with Visual Studio 2008. I followed the instructions for OpenCV2.2 (whilst downloading the newest stable version 2.4) did the CMAKE phase exactly the way it says . …  |
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