51,593 Topics
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| | I have some errors LNK2019 with my homework, but I can't solve it. My error Error 7 error LNK2019: unresolved external symbol "void __cdecl input(int * &,int &,class std::basic_ifstream<char,struct std::char_traits<char> > &)" (?input@@YAXAAPAHAAHAAV?$basic_ifstream@DU?$char_traits@D@std@@@std@@@Z) referenced in function _main E:\Ex\Bai_1_No_File\main.obj Bai_1_No_File This is my code. main.cpp #include "function.h" #include <conio.h> #include <fstream> … |
| | I have a program that is writen in C++, and I'm trying to set up the cygwin interface in order to save it to the correct path, compile it using the correct commands, and send the output to the screen. I want to understand how to achieve the connectivity to … |
| | Opnet uses proto C / Proto C++. It is a network simulataion software. It there any way to identify the receiver node id in wireless domain model. |
| | Hi everyone, I am writing some PDE code, and I am just starting to think about parallelizing it. The code is extremely parallelizable by both CUDA (at the lowest level) and regular threading at the higher level. Specifically, I am coding a matrix multiply, and the matrix is banded, so …  |
 | Hi all, need some suggestions. This code looks like a jumbled mess to me. I am missing something and am not sure what. -Main should determain the letter grade of an average based on a 10-point scale and print out this grade. 90–100 A 80–89 B 70–79 C 60–69 D … |
 | Hi, I am very new to programming and I am unsure of how to start coding in c++. I need to create a currency conversion program. I need the code. I do have VS but have no idea of how to start the process of the coding. |
| | //I am writing a program that converts from one unit like mm to another e.g cm. The program should prompt invalid unit when something other than mm, cm, m or km is entered as the unit to be converted from or unit to be converted to. The problem is how … |
| | what are three examples of derived datatypes as used in OOP.  |
| | Hello, I have to code essentially what would mimic a std::map. I have a templated pair class, and a table class. I am given two tables, transition and action table, which are attached. Basically, I suppose to code a security system, where a door opens after someone punches in the … |
 | for (std::size_t iter = 0; iter != m_queryMap.size(); ++iter) { // note here, line = iter + 1; std::set<std::size_t> lineBuck; lineBuck.insert(iter + 1); const std::vector<std::string> &bucket = m_queryMap.at(lineBuck); } where std::map<std::set<std::size_t>, std::vector<std::string> > m_queryMap; // storing each line of input // crossed with the line number as its key yup, …  |
| | I need the first and last names to be capitalized, so if the user inputs a lowercase, it'll change it to uppercase when it's displayed. But it's just the ASCII and I'm not sure how to fix it. Thanks! #include <iostream> #include <cctype> using std::cout; using std::cin; using std::toupper; char …  |
 | Please help me my teacher gave me a program and I don't know how to do it. So this the program the she gave me. "Conversion from any Base to Base 10". Please help me :(  |
| | So everything works right now, but I need that final section (will be turned into a function later) to display the number of A's, B's, C's, D's, and F's. It seems like it should be pretty simple, but nothing is working for me. Thanks! #include <iostream> using std::cout; using std::cin; …  |
| | HI, the imput of my algortihme is C1,C2,C3,C4,C5,C6,C7, Target where the aim is : -C7 will be in target Position -C1 d'ont change it's position - keep the distance and the local position between C7-C6,C6-C5,C3-C2,C2-C1 C7-C6= mena the posiiton of the C7 relative to C6 (we must keep it and … |
| | I need to find a digit at a specific postion in a number. Example number 652796, user inputs a 4, "2" is displayed. I have the basis for it, but most of the time, the output is incorrect. Not sure what's wrong. #include <iostream> #include <cmath> using std::cout; using std::cin; …  |
| | Hello, I am new to C++ and have been writing a server program to help me learn. I am currently stuck on how to get a couple of classes passed by reference. I have been searching on forums for hours now and I just can't figure this out. I would … |
| | hellow sir i am getting problem while installing turboc++  |
| | Hey everyone, i was suppossed to convert my array notation over to pointer notation in my functions, but am i missing something? i though this would be correct. Can someone point me in the right direction #include <iostream> #include <iomanip> #include <fstream> #include <cstdlib> using namespace std; //function prototypes void …  |
 | I'm parsing a date into three ints, then manipulating them. I then want to convert them back into strings so I can concactenate them with the slashes so I can search an array of dates saved in string format. I looked around and this code seems like it should work, … |
| | I'm really struggling with this assignment. Here's what I have to do: Write a program that uses an array to store 10 elements, representing 10 students' test scores that will be entered from the keyboard. Given the following grading scale (given in my if statements) determine the letter grade each …  |
| | I need to read these numbers from a file: 2 10.5 5 20 10 30.2 It is not working. It skips over numbers. The first row (2,5,10) is supposed to be Hours and the second row (10.5, 20, 30.2) is supposed to be Pay.Any help is appreciated.Thank you. Note: This … |
| | A program that can sort a list of names and telephone numbers alphabetically. Persons are sorted alphabetically by their first names. Persons with the same first name are sorted by their last names. Plz give me its code,I tried a lot but failed. |
| | { #include "stdafx.h" #include <iostream.h> #include <stdio.h> #include <string.h> class inventory { private: int prodID; char prodDescription[20]; int qtyInStock; public: inventory()//default constructor { prodID=0; strcpy(prodDescription,"-"); qtyInStock=0; } inventory(int a,char *b,int c) //constructor that initializes a new Inventoryobjects with the values passed as arguments { prodID=a; strcpy(prodDescription,b); qtyInStock=c; } }; int … |
 | I am having a little trouble with my class Person program. It runs and builds without error...Yay....except I am getting 0 output. Anyone have any advice? #include <iostream> #include <string> #include <vector> #include <stdlib.h> using namespace std; class Person{ private: string name; int age; public: Person (string n, int a); … |
| | In my windows8 system conio.h header file is not working.Can any body tell me any idea about working of this header file. |
| | Hi! I have just started on c++ and have encountered Expression: (unsigned)(c+1) <=256 Error when I am trying to run the program. The program is suppose to generate an array of letters (lowercase and uppercase) of size from 15 to 25. After the generation, using ONLY one while-loop, try to … |
| | A program that can sort a list of names and telephone numbers alphabetically. Persons are sorted alphabetically by their first names. Persons with the same first name are sorted by their last names. Following are the guidelines for program,program must include these things. Input: names and telephone numbers, Output: list … |
 | write a program to take decimal number and to print equivalent character? |
| | Hey guyz. It's my task to write a code in C++ which indents a pre-written code. Can any one here help me writing this ? |
 | Hi everyones! I have explore and development on many programming languages as C++, python, perl, java(a little bit) and Assembly (a little bit),and web languages like html, javascript(a little bit) and PHP. Now I'm wanna create my own OS. My OS will have a simple boot file as starting up …  |
 | 1- implement a double linked list (node contains data and left pointer to the previous node and right pointer to the next node) |
| | I try copy a string to another string, but it has error with "_ps->copy(_pt,_beg,_end);". This is my code( but it is not full code): string* find_The_Longest_Word(string* _ps, int _beg, int_end) { string* _pt; _pt =new string(); _ps->copy(_pt,_beg,_end); return _pt; } |
 | I'm having trouble compiling a short amount of code to the "Hello World" programming and am needing assistance. This is the error message that I get: no input files C:\Dev-Cpp\My World\Makefile.win [Build Error] n\make.exe: *** ["Hello] Error 1 |
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 | hello again, so i want to make a programme where the file saved is saved with different names at every loop.. like at first loop it will save as file1.txt, 2nd loop file2.txt, so on... so this is my code... #include <iostream> #include <fstream> using namespace std; int main() { …  |
| | This is a program..to create and search for Binary Tree.. An error is occoured for class tree ..as " Too many types in declaration". I would be glad if anyone can tell me to solve this problem. Thanks for all the support. #include<iostream.h> #include<conio.h> struct node { int data; node … |
| | hello guys, i found a piece of code in the net.. this code is a progress bar loop programme. I am new to programming, and i am not able to understand this code. PLEASE can anyone explain it or tell a simpler version of it. thanks(sorry for my english) #include … |
| | error: [Click Here](http://s27.postimg.org/syfgdiagz/New_Bitmap_Image.png) snippet from main.cpp: std::ifstream inFile; inFile.open ("in.txt"); TextQuery(inFile); inFile.close(); snippet from TextQuery.cpp: TextQuery::TextQuery(std::ifstream &in) { std::size_t countLine = 0; std::set<std::size_t> bucket; std::string line; while (in >> line) { m_wordStore.push_back(line); ++countLine; bucket.insert(countLine); m_queryMap[bucket] = m_wordStore; } } been trying to use std::cin to replace it as input feature … |
| | Hi to all! I decided to make project about cars and their makes. Can anyone suggest some interesting functions that it might have,to make it interesting Thank you,i opned for ideas 24/7 |
| | please i need help with my work.. write a program in c++ that accepts a real number with two decimal places and output the vallue in words.. [assume that no amount will exceed 999999999999.99 |
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| | #include<iostream.h> #include<conio.h> #include<dos.h> void main() #include<iostream.h> #include<conio.h> #include<dos.h> void main() { clrscr(); char un[4]="123",pw[4]="123",unn[3],upw[3]; for(int x=2;x<=79;x++) { gotoxy(x,2);cout<<"Û"; gotoxy(x,24);cout<<"Û"; } for(int y=2;y<=24;y++) { gotoxy(2,y);cout<<"Û"; gotoxy(79,y);cout<<"Û"; } gotoxy(5,3);cout<<"fly aboard system"; gotoxy(3,4);cout<<"username";cin>>unn; gotoxy(3,5);cout<<"password";cin>>upw; if(un[3]==unn[3] && pw[3]==upw[3]) { for(int a=1;a<30;a++) { delay(100); sound(555); cout<<"Û"; } nosound(); } else { gotoxy(3,6);cout<<"wrong"; } getch(); } |
| | i just want to know how can i start to code my private GUI in c++ what libraries can i use? and is there any book or bdf can help me ?  |
| | I'm having a great trouble in compiling a custom header file in my project, with Visual C++ 6.0, when I open my source files and click builds, every thing goes fine, but when I try to compile header file, I receive following error, " Cannot compile 'D:\Programs\SalesP.h'; no compile tool … |
 | related on the first question...which is getting the commission,,, let me correct it..if you run this code the sample output will be like below; the problem is I dont know which one will be first to make a code. the output will be like this; sample output monthly sale=15250 commission=610 …  |
| | I have created a class with few public and private functions to create an sqlite database and related operations.consists of 2 private member variables **A & B**. **Public functions:** to check whether database exists ,if exists open and read data A & B else call the 3 functions from private. … |
| | Hi, I'm developing a software in C++/Qt5 and I would like to create a button, which when u click on it, a "status" is posted on the user own wall. So I created a facebook app on https://developers.facebook.com/ but I don't know how to configure it. Also I tried to … |
| | tell me a different program in which function,array,loops and structure are used? i present it on tuesday |
 | I have this program Define a function hypotenuse that calculates the length of the hypotenuse of a right triangle when the other two sides are given (22__hsideasideb=+). Use this function in a program to determine the length of the hypotenuse for each of the triangles shown below. The function should … |
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