51,593 Topics
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| | Hello, I am trying to optimize or make my code faster and I am not so sure how. So I have two level nested for loop and inside there, I assign value to the array. For example, [CODE=c]tmp[0]=*ptr; tmp[0]=100;[/CODE] I found out that the second one is faster than the …  |
| | How can I create the map size, [CODE] #include <iostream> #include <fstream> #include<string> using std::ifstream; bool msize(int Height,int Width){ //add code return true; } bool draw_map(char* Filename,int Width,int Height){ if(Width<1||Height<1) return false; msize(Height,Width); ifstream file; file.open(Filename); if(file.is_open()){ while(!file.eof()){ for(int x=0;x<Height;x++){ for(int y=0;y<Width;y++){ if(c!=']'){ file >> map[x][y]; file.get(c); }else map[x][y] = …  |
| | Hello. I'm creating a program with dialog editor. How can i set bitmap on button? I set bitmap at properties to True. I tried to search on google but i could only find how to set bitmap on button created with CButton. Thank you |
| | hi guys...when we have used Sleep() function, then how can we get out of this Sleep() function....Lets suppose we have used Sleep() for 10 minutes and I want to terminate the prog after 2 mins, here is the situation im using [code=c] someFunc(); printf("\nProg will not terminate for next 5 … |
| | Well, I've recently been getting into developing drivers, so I thought I should make a class to programmatically start services. But of course, I ran into some trouble on the way, as usual. I'm using StartService to start it, but for some reason it just hangs, I've done some research … |
| | My professor has given me the code and I wanna run it. I use Visual Studio2008. Code contains data structure "queue". He defines one queue as "queue<int> Q;" But my compiler gives an error and says "error C2065: 'queue' : undeclared identifier" Do we need any separate header file to …  |
| | I am needing help figuring out how to get this program to function correctly. The program is developed in order for a user to type in any number and it will tell if the number is prime or not. This works, however, I cannot figure out how to get it …  |
| | I am studying further about C++ and come across a topic which describe method to avoid multiple inclusion of header file, which may cause compilational problem. But I never seen such problem, I've tried to mimic the situation with the below files in Visual C++ 2008 express, no error prompted … |
| | regarding with islower() argument, I tried to make a script when I enter the letter with lower case, program detects it and told me that but how i used if else loop but something is wrong, error is seen on islower? my program [CODE]#include cstdlib #include iostream #include conio.h #include … |
| | Hello, I am trying to run a program that uses raw file as an input file and then use a function that requires input file data into uint8_t array type argument. The problem is that when I use the sample input raw file, it works perfect but when I use … |
| | Hello. I'm kinda new to C++ and want to play two beeps through the system speaker (PC) (Using Beep() of course) at the same time for a song I'm working on. I heard about multithreading, but, as i am only slightly experienced in c++, am having trouble understanding it. Could … |
| | i was able to make an add functin for a binary tree. in my code, i am able to add a string for the name, university and and int value for an id. now, i need help being able to search the binary tree for a specified id, then return … |
| | hello there I was wondering how would we print numbers like xxxxxxxx.xxxx using cout? I know we can use setprecision() to get the decimals right to the dot. But i am looking to print the numbers left to the dot.ex: 00000012.12345 is there a way that i am unaware about … |
| | As i am new to use mouse interface in c. Please tell me how can we check mouse is connected or not. How can we get co-ordinate from computer screen when we clicked it. i just want that how can we store co-ordinate of screen in variable when we clicked …  |
| | I'm having trouble displaying a string and integers through the use of stringstream. The code below displays fine as is but say I put in << endl after name. When I compile this it only displays the name string and thats it. If I add a space in any of … |
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| | I have an exercise again and I got blocked again. The exercise is: Daphne invests $100 at 10% simple interest. That is, every year, the investment earns 10% of the original investment, or $10 each and every year: interest = 0.10 × original balance At the same time, Cleo invests … |
| | this is a program that my teacher gave me in the class. but i didn't understand it....please explain it to me step by step... [code= c++] #include<iostream.h> class queue { int element; queue* next; public: queue* enqueue(queue*,int); queue* dequeue(queue*); void queue_display(queue*); }*head,*tail,object; queue* queue::enqueue(queue* head,int key) { queue* temp; temp=new …  |
| | Hi I have just written this code (am just starting out with c++ so took a while :s) Works fine.... untill character 2 is created. When the program is run the character 1 is fine and every time the users is asked "Please enter x" they can and it is … |
| | Hi! I have a program in FreeBasic that helps study words; sort of like a flash-card program. I want to send it to my friends, but they have hungarian keyboards, and I can't figure out how to detect a few things using that keyboard (e.g. the letter í has no … |
 | Hey! I just startet fildeling around with c++ a week or so ago. I have some experience in Java and python. Anyways, i wanted to make this simple hangman game; [code] #include <cstdlib> #include <iostream> #include <string> #include <fstream> using namespace std; void exit(int exitcode); char hus[] = {'h', 'u', … |
| | First off, I do want to state that I have read the forums and have not found an issue directly regarding this exact problem, though it is possible I may have overlooked it or something and if so please just point me in the right direction and I will leave … |
| | I was wondering how I could start to program. I have looked up some information on the topic and it seems that C++ would be the most usefull to learn. However as it seems a complex thing to learn I was wondering if there was another language to learn first … |
| | Hello, I am new with c#. I need help in splitting the operators and operand in two different arrays. For example 4+5-3-6+7 is an input string, so in this i want 4,5,3,6,7 in one array and +,- in another array . can anyone please help me out ? |
 | Ok, I have code that needs to forever loop, and process. My code in the windows procedure has a case WM_LBUTTONDOWN: . I left click on the client area of the window and it processes the code accordingly. Now so that it keeps processing code at the end of the … |
| | i make this project what i unable to use file handling[CODE] #include<iostream.h> #include<conio.h> #include<dos.h> #include<stdlib.h> #include<stdio.h> #include<string.h> #include<fstream.h> #include<ctype.h> #include<bios.h> #include<ctype.h> int menu(int,char a[25],char b[25],char c[25],char d[25],char e[25],char sl1[2],char sl2[2],char title[40],char under[2]); void lbyl(char a[50]); void main_menu(); void student_menu(); void mark_menu(); int records=0; void lbyl(char a[50]) { int l,i; l=strlen(a); …  |
| | Hi, I would like to get some suggestions on how to change this program from array to vectors. This program reads an ASCII input file and outputs the character frequency into a text file. I got it to work with the arrays, but I can't figure out where to do … |
| | Write a C++ program that creates an invoice for a small fruit vendor named “Bob’s Fruits”. The fruit vendor sells three kinds of fruit: oranges, apples, and bananas. Oranges cost .90 each, apples cost .65 each and bananas cost .70 each. For each type of fruit the program should ask … |
| | Hi all, here is my code to find the LoadlibraryA address from an exe, I want to write the return value to text file , but I cant figure out how to do that.Any help would be greatly appreciated. [CODE] #include <windows.h> #include <tlhelp32.h> #include <iostream> #include <conio.h> using namespace … |
| | i use microsoft visual c++ but i'm unable to execute my graphics program in it is there any solution to over come it???????????????? and can any one have an project of student management system ???????????? |
| | ca anyone help me... i am having a problem of my c++ code.. im still a begineer in c++ and i want to creat a program that searches and input an ID number and reading the whole line..this is my sample txtfile Record2.txt 101,Kirviepalencia,500.00 102,ALmond Olilang,700.00 103,Krishna Laguardia,200.00 104,Carl Kabalyero.300.00 … |
| | Hello, I got a new problem. Our teacher asked us to create a menu-driven program which will make all types of conversions ([url]http://classroom.sdmesa.edu/vtrinh/pp4.html[/url]). This program must be able to do conversions back and forth (like inches to centimeters, and centimeters to inches). Below I started the assignment and so far …  |
| | I'm having some problems finding memory management errors in this code. The only one I see as a possible error is the deleting the dereferenced pointer, but I'm not even sure if thats correct. Some of the errors should include memory leaks, memory deletion when still in use, two objects … |
| | please help me how i would write these two programs. im learning c++ and am having difficulties, if anyone can help i will greatly appreciate it. Write a C++ program that displays the results of the expressions 3.0 *5.0, 7.1 * 8.3 – 2.2, and 3.2 / (6.1 * 5). … |
| | Say I have a class: [CODE]class foo { public: foo(); int len{return 1}; }; [/CODE] Then in main I have a class pointer: [CODE] foo *var[5]; [/CODE] My question is when do class pointers get initialized? Or do they not? How would one initialize them? |
 | Hey guys, I think I have a pretty simple fix here, I just need somebody to point out my error. I'm getting a seg fault after writing to an array of char. I need my function to run through the array and find pairs. If every char in the array … |
 | Hi! Having some major issues my homework assignment. I have to end this while loop when detecting two consecutive newline escape sequences in a row. This is the word problem: Write a program that gives and takes advice on program writing. The program starts by writing a piece of advice … |
| | hi there, im using mfc when i close my dialog box i want to disable mouse move events, so any idea how to do that? i want to do that because i have problems, mouse move event happen before closing dialog box and i dont want that. have no idea … |
| | Hi i'm Browsing a file, then showing the contents of file in tree control, i just want that if user wants to browse again a file, then in tree control previous items should be removed and new file items shouls present only can any1 help me, how to do that … |
| | Hi, I spent a lot of hours, why this code is wrong. This code compiles good, but execution causes errors (during sorting objects). Environment: (MinGW WinXP or VS 2008) [code] #include <iostream> #include <vector> #include <algorithm> using namespace std; class Edge1 { int v_,w_,weight_; public: Edge1(int v, int w, double … |
| | Using this code:[CODE] class box { public: int x; int y; XMMATRIX world; ConstantBuffer cb; cb.mWorld = XMMatrixTranspose( world ); box(int a, int b){x=a;y=b;} };[/CODE] Gives error on "cb"(This declaration has no storage type or class or type specifier. What should i do about this? Is it not possible to … |
| | hello guys...if it is simple question plz excuse me... [B]1)[/B] I have a var associated with ListBox (you know adding var to the control in MFC). Now I can access it in one class [B]"MyProgDlg.cpp"[/B] but can't access it in another class [B]"classA.cpp"[/B], why is this so [B]2)[/B] how do … |
| | The recently made a change to my code that made it work correctly. I would like someone to help me understand why it works, but it did not work before. [B]Before (not working correctly)[/B] total = (amountPaid - purchaseAmount) * 100; totalInt = total //changes from float to int totalDollars … |
| | considering visual C++ compiler, Lets say I've got a file with whatever extension and it contains 100 bytes of data which are exactly the data that I want to initialize an array of char data type with a length of 100 characters with, Now apparently one way is to read … |
| | Is it possible to use a string with classes? Even if you are using a class specification file and implementation file? I need to have 3 member variables that need to store a string. Or is an array of characters a better fit when it comes to classes? |
| | [CODE]a.cpp: In function ‘int main()’: a.cpp:39: error: no matching function for call to ‘find(int&, int)’ [/CODE] [CODE]#include <iostream> #include <fstream> using namespace std; int minutes, seconds; char temp; int array_l; bool* sees; int* a; int saade; int main() { ifstream sisf("raadio.sis"); ofstream valf("raadio.val"); /* * How many songs? */ sisf …  |
| | [B]I want to write elevator program. Can you help me. Please... [/B] |
| | Hi all, i'm new to Templates and when i tried to implement templates methods which needs to use a map (which is a member in private), the map can only do 3 things: insert, swap, and operator =. and i don't get the full functionality of map.. Here's the code: … |
| | Hi I'm currently writing an Othello game using the Windows API. I have 3 classes in my program, the first class is simply called "Othello" and it handles almost everything. I also have a class called Field that's used to control which fields are black which are white etc. My … |
| | Is there any good book or any good resource over web. Any ebook ?  |
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