51,593 Topics
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| | How do i get my program to read the last ten lines of the ".txt" file? Can you please dumb it down as much as possible. Here is what i have so far: // reading a text file #include <iostream> #include <fstream> #include <string> using namespace std; int main () … |
| | Hi, I need to search for a key word in last n/100 lines of a text file. Here is the code i have so far. This search whole file & that is an issue. This is not a home work question, please help. [ICODE] ifstream readFile(fileName);//read the file while( readFile … |
| | Hey1 fox so last weekend my friend asked if i could help her on her Comp Sci project, Little did she know im not a programming genius. So i've come to the one and only Daniweb for help... here's what she's supposed to do.. Write a C++ program by completing … |
| | I'm working on a program that performs insert sorts and selection sorts on an array of 5 unsorted numbers and a sorted array of 5 numbers and counts the comparisons made on each. I'm still learning about Big O notation, so I'm having a hard time figuring out where a … |
| | Holla, i use Visual Studio 2010 and as all we know, visual studio dont give any help with C/C++ win32 appis syntax like C#/VB were you type 3-4 words and then a list pop up. Today i downloaded Code::Block, i suprized because it had this feauture with auto-show list with …  |
| | Description of the Problem: In my program, i need to write a program that will determine how many coins of each denomination (1¢, 5¢, 10¢, 25¢, and 50¢) are required to make up a given amount of change. For example, to make 57¢ we could use 1 half dollar, 1 … |
| | Hey Everone , I Wrote a Program To Enter The info and the given info would be saved to a text file . Here is The Program Itself : [CODE]/* Created By Hayzam Sherif Date : 11/7/11' */ #include <fstream> #include <iostream> #include <cstdlib> using namespace std; int main() { … |
| | [B]Problem question:[/B] Given the sequence A and B, where A is the inorder traversal value and B is the pre-order traversal value, reconstruct the binary tree that produces such results when performing inorder and pre-order traversal on that binary tree. To reconstruct the binary tree you can simply print the … |
| | I'm trying to compare a string value, defined by user input, to values in a struct, so it will print out the names associated with that value. [CODE] #include <iostream> #include <string> #include <sstream> using namespace std; #define n_fencers 5 struct Fencer { string name; string weapon; int score; int … |
| | Hi Can anyone explain what the meaning of encapsulation and abstraction in OOPs?  |
| | This is a part of my quiz program in which i ask the user to input question and 4 options and the correct option after which in new funtion i ask the quiz. but although it is asking me "option-1", its skipping the "Ques-" [CODE]int quizquestion() { cout<<"\nQues- "; cin.getline(stmt,100); …  |
 | Is there an existing function to add bytes in a file at the current position (not at the end of the file)? Because it's very slow to cut the file on parts and then concrete them (for example if the file is 1GB). |
| | INPUT.txt [CODE] 6 p q r s k m 6 ~p|q ~q|r ~p|~r|s ~r|k ~k|m r m [/CODE] right OUTPUT.txt [CODE] ~p|q,~q|r,~p|~r|s,~r|k,~k|m,r,~m p: Resolve unsuccessfully q: ~p|~r|s,~r|k,~k|m,r,~m,~p|r r: ~k|m,~m,~p|s,k,~p|k s: Resolve unsuccessfully k: ~m,~p|s,m,~p|m m: ~p|s,0,~p TRUE [/CODE] My Program [CODE] #include "stdafx.h" #include <string> #include <fstream> #include <vector> #include … |
 | Hello all, I am a little confused about .lib and .dll files. I always thought that .lib files refer to a static library and that a .dll is the dynamic library. Recently, i read that .lib files also act as a stub for a .dll and that the .lib files … |
| | This program is to enter the scores, get the grades, and display the result. However, I get a [U][B]fatal error LNK1120: 1 unresolved externals[/B][/U] Does anyone know how to solve this problem? [CODE] #include <iostream> #include <iomanip> using namespace std; // Function prototype void letter(double score, double resultNum, char grade); … |
| | Hi. I was wondering if anybody could help me with a small problem. I would like to read a specific line from a txtfile and either output/delete it. Basically, I'm doing a program where a user inputs/view records and i'm stuck at searching it. My txtfile input from user has … |
| | I have difficulty to change the following program by using the array. The display need to be like the following: [INDENT]Result 1: 50.00 Grade U Result 2: 95.60 Grade A Result 3: 72.00 Grade B[/INDENT] Can anyone tell me how to do it? Thanks. [CODE] #include <iostream> #include <iomanip> using … |
| | Hello I'm using visual studio I need help making a program where a txt file will be read. my program should read all the test scores in the line and will stop when -1 is entered example input file joshua 90 89 -1 michael 76 80 89 -1 Shawn 78 … |
| | I have been using Visual Studio C++ 2010 Express to do some work, which has now succeeded after a lot of trouble. I wanted to go one step further but it seemed that I would need the full 2010 .NET software to achieve this. I downloaded Microsoft Visual Studio 2010, … |
| | Hello everyone, I have just written some code that measures a system's [URL="http://en.wikipedia.org/wiki/FLOPS"]FLOPS[/URL], but before I wrap it in a class and make a GUI for it, I would like to know what you guys think of it, if you can see any bugs and/or if you got any suggestions … |
| | Hey, Im having trouble writing a function that will take a limited running average from a file. the running average works just fine, its just when i try to limit the input, i just come out to inf. could it possibly be that im using a static double for the … |
| | Ok, I am def a beginner in writing code (use to be ok, but haven't done it in soooo long, so I am very rusty). Let me give a little background about the program I am trying to write before I get to my question so that it makes a … |
| | Well simple really: Is there any header, libray, dll, etc. that defines Infenity in any way? |
| | I need help on sorting strings, particularly complicated ones.I had to read in data from a text file Textfile.txt Xiao Wang 135798642 Lucie Chan 122344566 Rich Morlan 123456789 Amir Khan 975312468 Pierre Guertin 533665789 Marie Tye 987654321 I managed to put them into an array using this user-defined function (not … |
| | Anyone can help me with this algorithm? 1 set up stack in and print it 2 while stack in is not empty repeat 2.1 max = in.pop 2.2 while there are still element in stack in repeat 2.2.1 value = in.pop 2.2.2 if value > max 2.2.2.1 temp.push(max) 2.2.2.2 max … |
| | Hi everyone I have this project for my programming class and would appreciate it if someone could point me in the right direction. The objective of the lab is to write a C program that will be able to solve a boolean formula and print all the satisfying assignments. This … |
| | I'm trying to do an analysis of buildHeap vs. inserting an array of n values one at a time into a heap. I have a random case, best, and worst case. I was wondering if anyone knows what would actually be in an array to make the best and worst … |
| | Another newbie question here. What's the difference between these two? [CODE]cin.ignore(cin.rdbuf()->in_avail(), '\n'); cin.ignore(numeric_limits<streamsize>::max(), '\n');[/CODE] I understand that the former will ignore only the characters [I]left[/I] in the stream buffer, while the latter tries to ignore characters equal to the [I]size[/I] of the buffer. So the end result should, normally, be … |
| | [CODE]string rev; for(int i =1; i<=(int)user.length();i+=2) { rev = user.length[i+1]; rev = user.length[i]; } [/CODE] this is a part of my code where "user" is the user inputted text. I'm trying to get the output to do this. input - square output - er au qs I've been stuck on … |
| | I've to make several experiments of some algorithms. I want to send those results to a .txt file [CODE] //.... for (count= 1; count<= 20; count++){ //.... std::cout<<exp<<"Time: "<<duration << " seconds" <<'\n'; ofstream f2; f2.open("results.txt", ofstream::out); for(int i=0; i<=20; i++){ f2<<duration<<endl; } f2.close(); } [/CODE] With this code, I … |
| | I recently started reading Beginning DirectX 10 Game Programming written by Wendy Jones, and I'm about 60 pages in on the chapter about sprites, and I feel like I haven't learned anything, half the code they throw at me I can hardly decipher, and even if I do that, how … |
| | hey guys, i have a problem with this question.. Given n and m, calculate 1^1 + 2^2 + 3^3 + ... + n^n modulo m. here i cant use power function directly as it only works for very very small inputs. Test your code on anything larger and you will … |
| | I've this code. I need to do several experiments to obtain de average time it takes to do some methods. Instead of re-running and re-running the program, I want to put a segment of the code in a FOR bucle. The problem is that my program never ends,it stays looping … |
| | I've a vector of size 'n', I need to do random couples with the n numbers (integers) and make a swap between them. Any ideas how? I had this idea [CODE] int low = 0; int temp; for (int high = n-1; i= low; high-- ) { temp = v[high]; … |
| | hi can anyone help me in making this code work ..i will be very grateful to him/her [CODE]#include <iostream> #include <stdio.h> #include <conio.h> #include <windows.h> using namespace std; #define BLACK 0 #define BLUE 1 #define GREEN 2 #define CYAN 3 #define RED 4 #define MAGENTA 5 #define BROWN 6 #define …  |
 | the program behaviour is different with code that have similar function this [CODE] #include <iostream> #include <string> int main() { int a = 1; while (a < 11) { int b = a++; int c = a * b; std::cout << c << std::endl; ++a; } return 0; } /* … |
| | Hi everyone,Can you please help me? I want a C# code for taking time and date from a site and import this time in my program,can you pls help me. |
| | Hello again I am a bit confused about how to show a constant in a class constructor. I have a savings account class (A child class of Account) which has a constant interest rate. I have it in my class as a static constant double INTEREST_RATE;. Then outside of my … |
 | Seen it asked for so here it is.[code]#include <Windows.h> #include <iostream> #include <conio.h> using namespace std; #define ClearScreen() system( "CLS" ) class _Notepad { public: _Notepad() { ZeroMemory( &Buffer, sizeof( Buffer ) ); pt.x = 1; pt.y = 1; } void GetUserString(); void SendToChild(); private: HWND nphWnd; POINT pt; char … |
| | Hello I am creating a bank account for an assignment and the account number must be automatically generated with consecutive numbers. I have written some code that works, but now I need to know how to use it in conjunction with my Account class, especially how to add it to … |
| | 2-4. The framing program writes the mostly blank lines that separate the borders from the greeting one character at a time. Change the program so that it writes all the spaces needed in a single output expression. already google this, but what I got is a bunch of headache... so, … |
| | HELLO! There is no error and it runs, but it doesn't show my desired output. What is the problem? [CODE]#include<stdio.h> #include<stdlib.h> struct list { int data; struct list *ptr; }; int main() { struct list *clist; struct list *top; struct list *tmpptr; int i; clist=(struct list *)malloc(sizeof(struct list *)); top=clist; … |
| | So I'm trying to write a program that is due tomorrow. I am trying to overload operators and dealing with template classes. I have everything written already but keep getting this error whenever i try to compile the driver file: NOTE: proj4.cpp has #include "box.h" and box.h compiles fine, but …  |
| | Hi, I am new to the forum. I am stuck on this assignment I have to do. I think i have defined the array suitably enough, I just cant implement the sorting specified in the question. Any help would be greatly appreciated. Here is the question: Create a program in … |
| | I have a series of Key value pairs. Each Key has 2 values. Values of Keys ma coincide. Initially i start with Key1, ValueKey1, ValueKey2 are stored in a set.(Maybe Array). Now for each consecutive Keyi, i check if Valuei, Valuei+1 are in the set. If any one of them … |
| | Hi everyone. First time poster here :) I'm working on my final project for a computing course at university, and I was wondering if anyone knew of a portable library or solution to changing console colours. I understand that such functions are OS specific (I'm working on Win32, but my … |
| | After trying to start writing my long paper "Programing, The Art" I noticed that, getting user imput, conditional statements, using escape charecters, exicuting system commands, and even declaring variables and using them so that they have use; these are all difficult outside of the domain of C and C++, even … |
| | Here is my code, i will also give an example... [CODE]#include <iostream> using namespace std; class Encryption { private: int wp, wk, encryption; public: Encryption() { } Encryption(int password, int key) :wp(password), wk(key) { } int Encrypt_Store() { encryption = wp + wk; cout << "Encypted: ( " << hex … |
| | hi guys .......i am new around here ......would like you suggest something about..."Gaming using C or C++ languages" |
| | I have to write a game application that simulates a roulette table. The roulette table has 36 numbers (1 to 36) that are arranged in three columns of 12 rows. The first row has the numbers 1 through 3, the second row contains 4 through 6, and so on. There …  |
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