Software Development Forum

Hi all. This regards "Accelerated C++" Exercise 7-2. I'm trying to write a program that uses a map to put students grades into grade bands and print which band each student falls into. The grade bands are (A: 90-100, B: 80-89.99, C: 70-79.99, D: 60-69.99, F: <60). I'm getting into …

[B]Hello all..[/B] is it possible to create my own simple programming language in c++? complete with the compiler,editor and the libraries.. just a basic model where i can write simple instructions,save it with my own extension and run atleast a few simple algorithms..

I am attempting to create a "dirty form" checking class based on an example found at codeproject. I am hung up on the first line of one of the classes public class ControlDirtyTrackerCollection: List<ControlDirtyTracker> I am unsure how to replicate that : List<> part in vb net. Thanks

Hello, I need a little help with the correct implementantion of the bisection search algorithm in the following exercise: - with 2 given variables, balance and annual interest rate, calculate the smallest monthly payment so that we can pay off the balance within a year test case: balance = 320000 …

**the code works perfectly, just i got something i dont understand...** i'v been trying to get a hold of recursion and sorting for about 3-4 days now, im getting some of it, but still not happy enough.. i searched for some good code for binary search and merge sort on …

Hi im writing a program to simulate a slot machine, where a user enteres a coin and has a 70% chance of winning (say 3 coins). Anyways, I have a class slotMachine with a public int random() function. Here is the function: int slotMachine::random() { srand( time(NULL)); randomNum = rand() …

I cant seem to find an answer to this issue. I am opening a form from a user control. I created some public write only properties on the user control, but I cant figure out how to create a reference to the original existing user control to interact with those …

I am trying to write a shell script but I only want it to run if there are no files with a specific name found on the server. I know how to check for a specif file which would be done like this: if [ -f /path/to/file ] then echo …

Hello everyone. I am in a programming fundamentals class which we are using python. I am working on a Lab problem and really am not 100% sure how to do it. The Problem: A shipping company (Fast Freight Shipping Company) wants a program that asks the user to enter the …

I have two forms as form1 and form2 in my project.in form1 it has textbox as txtid. I take n=txtid.text in from1.then how can I use the same value of n (got at form1) applicable at from2.

I can't seem to figure this out. The multidimensional array "structure" changes its values without any reason. I am using Visual Studio 2010 for debugging, and when it enters "structure[x][y] = readData" for the first time, it changes the array's value, but it changes back on next line. I don't …

I have a program that is supposed to match opening and closing braces. It's supposed to work like a stack. It works until the last line of the input file. The last line is matching, but because it thinks the array size is zero it drops out and states that …

I need some help starting my project. You will have the following functions (no violation of these interfaces) and you may have others, as needed: − public static void GenerateRandomTriangles(int numTriangles) to create a file RandomTriangles.dat having the following format (including some comments like the ones shown below) with random …

--->>> when i click the yes button me.show, disappears, it suppose to stay, i don't know that the problem is. I hope someone can help thanks in advanced ^_^ Public Class MagicBeans Private Sub MagicBeans_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load MessageBox.Show("WELCOME TO MAGIC BEANS INC. ^_^ …

I'm trying to override equals method, but I'm getting error I have two classes one abstract and the inherited class. public abstract class MyData extends Object { public abstract boolean equals(MyData ohtherData); } public class IntData extends MyData { protected int num; public IntData (int n) { this.num = n; …

Boolean eminem = new Boolean("yes"); What does it mean & what does it create? Thanks.

Write a method setRating that reads a rating from the keyboard, insisting that the rating supplied by the user be valid. rating should be 1 to 5; public void setRating(){ System.out.println("enter rating "); int myRating = keyboard.nextInt(); } is this correct? or need to include like this public void setRating(){ …

Hi, I have googled but found nothing about this. I am trying to generate a random number from a given array. But how do i do it? **Suppose:** I have an array `int arr[]={3,89,99,4,55};` and i want to generate a random number among these numbers. thanks in advance.

Hi all, I came to know that in Java or c++, constructor is executed only after the allocation of space.... Then what does an implicit default constructor(in c++) or default constructor in Java does....? If we explicitly define our constructor then the initialization will be done according to our needs! …

I'm creating a jar file of my game to make it smaller and easier to transfer. I was able to created jar file out of my classes and include there images. Question is - how do I include txt file which is used for reading and writing?

Hi, I'm haveing trouble turing an array of Card objects into an ArrayList. The main reason I would like to use an array list is because I can then use the get/remove/add methods associated with an array list which is much harder to do with a normal java array. Heres …

public string[] LandsKodComboBox(string[] dendei1, string[] dendei2) { string[] dendei1 = new string[5]; string[] dendei2 = new string[7]; //assign the array dendei1[2]="hello"; //etc etc.... return dendei1, dendei2; } why cant i return both of them? or how do you write? thank you Dendei.

I upload my test_maze.txt so you can see my problem. I have some 3 unwanted $ that went up and 1 unwanted $ that went down on my path on the maze from P to T. I think the problem is in line 20 in the def main(): of my …

case 2: System.out.println(); ctr2=1; System.out.println("Select products and add to cart"); for(ctr=0;ctr<nList;ctr++) { System.out.println(ctr2 + ". " + itemArray[ctr] + " " + priceArray[ctr]); ctr2++; } System.out.println(); System.out.println("Enter the number of item you want to purchase: "); int itemPur = Integer.parseInt(a.readLine()); System.out.println("Choose the product you want to add to cart"); for(ctr1=0;ctr1<itemPur;ctr1++) …

Hi, I'm having problems with line 37 in my Driver class. I know that I get that error because, according to Java, the variable Task, in the Driver, has not been initialized, but I do not see how I'm not initializing it. Thanks [CODE]import java.util.Scanner; import java.io.*; public class Driver …

Hi, i have a dataset with 2 columns. 1 column is in String datatype and another one is in Timespan. Now i want to generate a chart from the dataset. While i'm trying to generate the chart, it has error: *"Series data points do not support values of type System.TimeSpan …

I am in a Fundamentals of Programming class which we are using Python. In the book was a simple code to solve a problem where a cook knows in cups how much he needs but we are converting it to ounces. I was playing around with that and trying to …

so i was trying to make a binary tree program. just inserting and deleteing. some how i messed up. i think insertion is ok till level 1 after that stays on level 1 only. also the function to delete the whole tree is not working. it only deletes node at …

with a lil bit of change in code ,it's functioning, but I want it to function with data members being private :-/ #include<iostream.h> #include<conio.h> class account{ public: int account_number; float balance; int passw; public: void display() { cout<<"Account number is:"<<account_number<<endl<< "Account balance is:"<<balance<<endl; } void user(int acc, float amou, int …

#include<stdio.h> #include<conio.h> void main() { int a[20],i; clrscr(); printf("enter 20 numbers: "); for(i=0;i<20;i++) scanf("%d",&a[i]); for(i=0;i<20;i++) printf("%d\n",a[i]); getch(); }

Greetings! Just want to ask how to create a C/C++ ide then link to a compiler? any advice? can I use a visual studio for creating an IDE?... Thanks Best regards, glenndr_15

#include <stdio.h> #include <stdlib.h> #define MAXSIZE 6 int main(int argc, char** argv) { float stddeviation, deviation, sumsqr, variance, mean, x, t, m, sum=0, max, min; int numdatapts, k; FILE * inFile; inFile = fopen("Uniform93.data", "r"); if(inFile == NULL){ printf("\nError opening file. Abort program.\n"); exit(1); } for (k = 1; k …

Hi. I'm having problems about my program. My program is something like a directory. It takes in values for different fields and stores it in a linked list in a sorted manner. It also allows the user to save the linked list contents to a text file. Everything runs okay …

I want to print the following using for loop. from the pattern, it's clear that when row and column is equal to each other it prints A that gives me A from top left to bottom right need clues A - A A - A A - A A-A ----A---- …

I’m not sure why this isn’t working. Java isn’t giving me an error I have this in my StateController class public void insertLinks() { for(int index=0; //index is a local variable for state objects index < numStates; index++) //for loop to continue making state objects stopping at numStates(50) { myList.insertFirst(myStates[index]); …

Hi, I'm concentrating on getting my card and deck classes for a card game project working correctly. Both my card and deck classes are working technically correct but when I go though my nested for loop in my Deck class to create a deck of cards it ends up being …

Hello Everyone So i have this flowlayoutpanel that contains checkboxes, so what It does is if a select a checkbox the text of that checkbox will be passed to the ProblemTextBox  My main problem is that I am able to add new checkboxes to the ProblemTextBox, but when …

i want to add multiple rows in datagridview from textbox values then save the rows into database? how its possible...???

package vc_client1; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.net.Socket; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.DataLine; import javax.sound.sampled.Mixer; import javax.sound.sampled.SourceDataLine; import javax.sound.sampled.TargetDataLine; public class voiceReceiver { public Thread playThread; boolean stopCapture = false; static ByteArrayOutputStream byteArrayOutputStream; AudioFormat audioFormat; static TargetDataLine targetDataLine; AudioInputStream audioInputStream; BufferedOutputStream out = …

Hello, I am working on a project which aims to compare an image to from a database of images and find out similar looking images. I am working with a DLL file which returns unique hash for each image. The hash is an array of 768 bytes. (byte[]) My problem …

I am new to Visual Basic 6 Class Modules and am having difficulty constructing a certain class. First off, I created a simple class, which is basically an array with some basic properties (Sum, etc). Next off, I want to create another class, which has these arrays as properties. As …

so I have a 2D arry with defaul value 0, and what I want to do is to accept a value from a user to change 0s to 1s depending on the accepted value. for example: we have an arry like this 0000 0000 0000 0000 and the user enters …

class Account { Long accNum, pwd} public class Banker { public static void main(String r[]) { new Banker().go(); // do more stuff } void go() { Account a1 = new Account(); a1.accNum = new Long("1024"); Account a2 = a1; Account a3 = a2; a3.pwd = a1.accNum.longValue(); a2.pwd = 4455L; } …

<? super Animal> means animal or it's superclass only. Then why inside the method it's allowing to add Dog object even though it's a subclass of Animal? This program compiles and runs! import java.util.*; class Cat {} class Animal{Animal() {System.out.println("Animal constructor");}} class Dog extends Animal{Dog() {System.out.println("Dog constructor");}} public class GenericDemo5 …

Hello I am trying to allocate a dynamic array of length that the user inputs. I have a function to this for me but it doesn't allocate the number that I want it to allocate. For example, when I input one it gives me 7 digits... heres the code: int* …

Hi. I'm fairly new to VB.NET programming, and i'm currently developing an application for the sake of experience. What i know about Visual Basic programming might be considered dangerous, but none the less, i'm trying. I'm having difficulty getting past the idea of how to update a record in a …

overload resolution failed because no accessible 'new' can be called with these arguments.. the error shows at the Dim *dataadapter* As New SqlDataAdapter(sqlCmd, connection) Imports System.Data.SqlClient Public Class Form1 Private Sub BtnGenResult_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnGenResult.Click Dim ConnectionString As String = "Data Source=(local)\SQLEXPRESS; AttachDbFilename=D:\PKBW Batching …

I am new to vb and I have been working on getting my brain around this if condition problem I am having in a windows forms in VB. This part of the project is a form writing back to SQL. I am looking to valdate input in textboxAm before I …

Hey all, can any one tell me the c# code to detect country from an IP address. Thanks in advance

Need help to print grids of letters ..for example ABABA BABAB ABABA BABAB ABABA BABAB so when row and column numbers are the same (r == c) the program prints an A. Any clue as to how I should approach this problem will be appreciated? this is what i got …