51,593 Topics
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| | Hi all, I'm new to C++ and am having a problem with a piece I am writing for an assignment. The problem area is below. [code] //arrival process on the corporate links if (clock % 4 == 0) { double randomno randomno = randgen; // Generate random number if (randomno … |
| | In the following code, how do I change the line under [code] cout << "\nThe value of bogus in num1 is " << num1.bogus;[/code] to get it to compile correctly. I know its calling for theValue which is private. Not sure what to change to make it work: [code] #include … |
| | i want to get token from string using string class. i know that using cstring, i can use strtok.can i use it? [CODE] #include <iostream> #include <string> using namespace std; void echo(string message) { cout << message << endl; } int main() { cout << "Enter your word: "; string …  |
| | [code=c] #include<stdio.h> #include<math.h> # define I 0.0765 //Interest Rate char fname[20]; char lname[20]; float loan = 0.0; int years; double PB; //Prototypes double Mortgage_Calc(void); void Financial_Report(void); int main() { printf(" *******************Caribbean Mortgage Company*************\n\n\n\n\n"); printf("Enter the Customer's Name (First Name and Surname)\n"); scanf("%s%s",fname,lname); printf("Enter Requested Loan Amount\n"); scanf("%f",loan); printf("Enter Number of …  |
| | Hi all, I need help turning this: W = 35.74 + 0.6215t - 35.75 (v0.16) + 0.4275t(v0.16) into code. I guess the real problem is the how to turn v to the .16th power using this function: double pow(double [I]x[/I], double [I]y[/I]) I know how to open a file with … |
| | [B]Is their a way of using windows98/Me to make a chart?Or lines goes up or sqares?Or how can i make a chart?[/B] |
| | I am using Dev c++ IDE for c and c++. When i run an aplication the running window disappears quickly. What should i do?  |
| | I am totally stuck on this problem and would love it if anyone knew how to help me fix it! Thanks for any input!!! Here are directions: Write a program that asks the user for a positive integer value. The program should use a loop to get the sum of …  |
| | hey guys heres a program thats suppose to assign a letter grade to a given percentage on an exam and i just keep gettin the same three erros at the bottom saying i have undeclatred indentifiers but i dont see how so any help would be very much appreciated [code] … |
 | i have to make a minesweeper game for class, 3d none the less using microsoft visual c++. i have created my dynamic class. there needs to be a node class and a grid class. i have no clue how to do it. if you can help please help me, its …  |
| | this is a progarm i have created to calculate srudent grades given the three grades. the computer then works out te average and assigns a grade depending if average is more than 50. the program stops after giving the average of the three grades and doesnt output whether pass of … |
| | The code below gives : Data is : hello srikanth its me Data is : Data is : Data is : [code]#include <string> #include <iostream> #include <boost/regex.hpp> boost::regex e("(\\w)\\s*(\\w)\\s*(\\w)"); boost::match_results<std::string::const_iterator> what; int main() { int i; const std::string input = "hello srikanth its me"; boost::regex_match(input, what, e, boost::match_default | boost::match_partial); … |
| | Can someone help me out code using the below to get the equivalent program as beneath: [B] boost::match_results<std::string::const_iterator> what; boost::regex_match(input, what, e, boost::match_default | boost::match_partial)) [/B][COLOR=#0000ff] [/COLOR][code]#include <iostream> #include <string> #include <boost/regex.hpp> int main() { std::string s = "who, lives:in-a, pineapple under the sea?"; boost::regex re(",|:|-|\\s+"); boost::sregex_token_iterator p(s.begin(), s.end(), re, … |
| | I need help with using the cin command\function. Any time I try to use it outside of the main function it does not work what am I doing wrong? |
| | Can anyone help me with this project, I cannot figure it out. Enter characters one by one until a predetermined “sentinel” or the maximum number of characters is entered. The maximum [B]MUST[/B] be less than 96. The sentinel character can be any character other than an italic alpha or, space … |
| | Hi, I am doing a part time degree and need some help to finish off some code for my first assignment in C++. I have written a program which checks some inputted int's and strings, validates them and outputs the result. The last thing I need to do to finish … |
| | Hi there, im a c++ noobie. I have a class called node. Node has a data member id. When i try and access id in the obect named f outside of main visual studio 2003 gives me the errors: : error C2065: 'f' : undeclared identifier error C2228: left of … |
| | Hi, My goal is to perform a single SQL query (“select xxx from yyyy etc etc”) to a Database over a LAN, using BORLAND C++ 4.5 and managing USERNAME and PASSWORD. I tried 2 methods so far : Method N.1) I used “Tquery”, TdataSource and TDBedit components linked togheter and … |
 | Alright, I cannot get the getline function to work. I have iostream included, using namespace std, and here is the syntax I have down: [inlinecode]cin.getline(playerOne, 21);[/inlinecode] with playerOne declared previously as a string, and I want its max input to be 20 characters. What's going on here? It's not working …  |
| | Ok our teacher gave us a .h and .cpp file for a class called "JarType" and our assignment is to overload some of the math operators. Now I know how to overload operators if I'm adding two JarTypes together. What I'm having a problem with is overloading when I have … |
| | How would you change the same member of many objects of the same class (or structure if possible)? [CODE]struct point { float x, y, z; } point a, b, c; a.x += 20; // b.x += 20; // now how would i do this in one statement? c.x += 20; … |
| | Hey guys. Ive been working with fstream for about 2 hours and i give up. My problem is I have a text file with an unknown number of rows. Each row has a known number of items. i cant figure out how to read the elements in each row. after … |
| | I just got my C++ assignment today, and I don't understand it. Here are the instructions. The topic is on DDR (Dance Dance Revolution) [B]Your task[/B] For this project, you will implement the following two functions, using the exact function names, parameters types, and return types shown in this specification. … |
| | Write a program that accepts a number and produces a pattern as shown in the following sample outputs. Line = 3 *.* .* * Line = 8 .*.*.*.* *.*.*.* .*.*.* *.*.* .*.* *.* .* i've just learnt to use the setw() command..... but how do you fill up the alternate … |
| | hi, i need to write a c++ program that takes input of a expression like say y = 5 + 2b; and gives out the output y = 5 + 2b it uses linked lists and the expression can be composed of integers, variables and operators. the encoding of tokens … |
| | Hello, i'm trying to write in the main program a linked list of namesfractions, and integres. i don't know if anyone can help me in this. i attached the fraction class and the implementationUsing the linked list class we derived in class, and the following functionality:[LIST] [*]A print function (you … |
| | [code] #include <cmath> #include <iostream> using namespace std; //Function prototypes void getPrice (float&); void getInterestRate (float&, float&, float&); void getDownPayment ( float&); void gettradeIn (float&); void calcmonPayment (float, float, float, float, float, float&); int main() { // Input variables float price; float downPayment; float tradeIn; float loanAmt; float annualIntRate; float …  |
 | im just doing a little exercise on the bubble sort algorithim, i included two ways of incresing its speed. 1. Breaking out of the loop if no swaps are made 2. Decreasing the inner loops lenght each pass I think there is two ways of doing it. This way i … |
| | Hello, Can anyone tell me what the code beneath means. I've searched but can't find a clear explanation. Maybe someone can give an example of how to use it. Thanks... [code] [COLOR=#0000ff]bool[/COLOR][COLOR=#000000] MyClass::[/COLOR][COLOR=#0000ff]operator[/COLOR][COLOR=#000000]()()[/COLOR] [COLOR=#000000]{ [/COLOR] [COLOR=#000000] ....[/COLOR] [COLOR=#000000]}[/COLOR] [COLOR=#000000]class MyClass[/COLOR] [COLOR=#000000]{[/COLOR] [COLOR=#0000ff]virtual[/COLOR] [COLOR=#0000ff]bool[/COLOR] [COLOR=#0000ff]operator[/COLOR]()(); } [/code] |
| | dont know what is wrong with this, wont give me the result. please help [code]#include <iostream.h> #include<stdlib.h> #include <process.h> #include <conio.h> class SortList { private : int *list; int size; public : SortList(int size) { list=new int[size]; this->size=size; } void Swap(int i,int j) { int tmp; tmp=list[i]; list[i]=list[j]; list[j]=tmp; } … |
| | I've just bought a copy of Borland C++ V.6 personal, for the purposes of compiling/'single stepping' my C code for college work. When I click the right pointing green arrow, the code compiles, (HelloWorld!) but trying to single step through the code or get an executable isn't obvious. Trying to … |
| | Hi guys, I just found this site while doing a google search for "declaration syntax errors" and it looks like there are some great people here that are willing to take time to explain things which is what I need! I'm in college taking c++ and my teacher doesn't tell … |
| | [COLOR=#555555]Greetings C++ Lovers:[/COLOR] [COLOR=#555555]I'm a student very new to this C++. Yes I took Linux & UNIX. That was a year ago and I've never applied it to ANYTHING. If it's not too much trouble, I'm at a loss. A Big LOSS. You see, the reason I say this is … |
| | I recently learned the command-line argument from my book, and I understand that both of argc and argv. HOWEVER, I don't know when I will use them and for what purpose??? I appreciate if anybody can help me!!:sad: |
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| | As far as i thought, this should work?? there is a spot or 2 i am concerned if i did it right though. Any ideas would be nice. It fatally crashes when ran in windows, didnt try in linux due to the fact i know it wouldnt work there either … |
| | a)how to run c++ program on Borland c package.I am preparing a graphic program on c++ but my progrm shows it can't run on windows. b)how a pointer is un limited array.:) |
 | Hello everyone, I am working on an assignment which has me build a huffman tree. I am fairly confident that I have built my huffman tree correctly, but now I must get the Huffman code for the characters being encoded (I need to get the 1's and 0's). I am … |
| | Hi guys, I need to find the size of the activation record of a procedure using the "address of" (&) operator... Any idea how it's done ?? Thanks for your help Boule |
| | I wrote two programs, this one: [code] #include<iostream> using namespace std; main() { char rom,invalid; double tot; tot=0; cout<<"Please enter Roman numerals ending with a period."<<endl; while (rom != '.') { cin.get(rom); if(rom=='M' || rom=='m') { tot=tot+1000; } else if(rom=='D' || rom=='D') { tot=tot+500; } else if(rom=='C' || rom=='C') { … |
| | Please Help, I am trying to create a visualizer for STEP (standard for exchange of product model data) files using C++ and OpenGL on Windows XP platform. I can get the OpenGL to draw some simple lines/shapes, the problem seems to be with parsing/understanding the file protocol. Has anybody out … |
| | Hi, I am Mangai, I am working in VC++. When I run my code I get an error like error C2143: syntax error : missing ';' before '*' error C2501: missing storage-class or type specifiers since I am a beginner I couldnt fix it. Can anyone help me in fixing … |
| | How do I call a function outside of main or use a parameter to pass a reference? If my function is: [code] void getData(int& diameter, int& price) { cout << "Enter in the diameter of the pizza in: " << endl; cin >> diameter; cout << "Enter in the the … |
| | I use Bloodshed Dev-C++ version 4.9.9.2 and it is a little weird in that it accepts "and" as "&&" and "or" as "||", not to mention not requiring parentheses around separate clauses in and/or connected statements. Therefore it would read the following as the same. if(voice==loud or voice==annoying and voice==whiny){ …  |
| | :?: converting binary numbers entered by the user to their equivalent decimal,program will have one function that takes an integer(1 and 0) upto 10 digits in length.Means binary into decimal ,I dont know where iam doing mistake, and my out put if i entered binary no 111 or any bin …  |
| | I'm trying to write a destructor function for my class type message, but I can't get the dang thing to [inlinecode]delete[/inlinecode] strings. So, uhm, Help! Do I have to go through a for loop and delete each character individually? |
| | Hi, I need to write a n00b program that calculates the best deal customers can get when buying pizza. The premise is, although an extra large pizza may appear a better buy, you need to calculate the cost per sq inch of both round and rectangular pizzas to really know. … |
| | I am a beginner on C++, and I have 3 programs at hand, who can show me how to write the prgrams for those problems, thank you very much:lol: : See the attached file. |
| | You guys have got to be sick of these C++ noobs coming in here asking for homework help but thats what Im going to have to do because I am totally lost....I was following pretty good till we got to overloading and passing things polymorphicly Anyway the point of this … |
| | Hi, I need help with my homework please, its due tommorow and i prommise to show my efforts in the next days :sad: [url]http://www2.filehost.to/files/2006-10-16_03/214316_cplus.jpg[/url] Thanks in advance :) |
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