C++ :: Use Of Port Series Mode Blocked Under CBuilder RAD?

Apr 3, 2012

Use of the port series mode blocked under CBuilder RAD Communication with the robot to the Modbus Protocol, This is a c++ program which serves as a force a bit of %M65. And also to calculate the CRC16 at the end.

I supports M340 automaton.

I have not a force several bits at the same time

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "dddd.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;

[code]....

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C++ :: Program To Get Sum Of Series

Feb 26, 2013

Why isn't this program working?

#include<iostream.h>
#include<conio.h>
void main() {
clrscr();
int n;
float x, t, sum=0;

[Code] ......

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C++ :: Loop With Taylor Series

Feb 25, 2015

Write a function that computes the Taylor series expansion of ex using the following formula, where x is the exponent, and n is the number of discrete trials to run:
𝑒π‘₯=1+π‘₯+π‘₯2+π‘₯3+π‘₯4+β‹―+π‘₯𝑛 =βˆ‘π‘› π‘₯𝑖 2! 3! 4! 𝑛! 𝑖=0 𝑖!
NOTE: This formula will NOT work if you calculate the numerator and denominator separately and then add the division result. You must use your knowledge of algebra to make sure you’re not calculating the entire exponent and factorial, but rather their factors per loop iteration.

Input prompt
Enter the values for x and n:
Output Prompt
Taylor series estimation is XXXX.XXXX

This is what I have so far for the function:

void getTaylor() {
double estimation
cout << "Enter the values for x and n:" << endl;
cin >> x >> n;
cout << "Taylor series estimation is" <<
}

I now need to create the loop so that I can enter in for my function.

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C# :: Approximating Value Of Pi Using Leibniz Series

Oct 1, 2014

Write a program that approximates the value of Ο€ using the Leibniz series and compares the Leibniz series approximation against the known value of Ο€ and two other common approximations of Ο€ (22/7 and 355/113). The program must prompt the user for the desired number of terms (n) to use in the approximation (as an integer) and calculate the approximate value of Ο€ to the given number of terms. The program must display each approximation of Ο€ and display the difference between each approximation.

I understand how to prompt for the number, what I don't even get how to start is to use it to approximate the value of pie in that given number. Also how to tell the difference between each approximation...

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C/C++ :: Pi Approximation With Fibonacci Series?

Oct 11, 2014

I can't seem to get the math portion right. It is supposed to approximate pi using (sigma,i=-1 to infinity)(-1)^(i+1)(4/(2i-1))=4(terms of pi). And what I have does some math but it is incorrect because I get a negative value for pi and one that is entirely too large at that. The precision is also to be at 20 decimal places. I also need it to end immediately after if I get an invalid input, but I can't seem to get it to end after trying a few different things it will say that it is an invalid number, but will continue to run the math loop. I also need the final cout to print all the terms that is multiplied by 4.

[code]#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;
int main() {
int nterm, numerator;
double sum = 0.0;
const int upperBound = nterm * 2;
cout<<"This program approximates pi using an n-term series expansion. "<<endl;

[code]....

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Visual C++ :: Calculate PI Value Using Series

Mar 3, 2013

in code my prompt said :

(computing Ξ  (PI) ) You can approximate (PI) value by using the following

series:
Ξ  = 4( 1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + ... - 1/(2i -1) + 1/(2i + 1)

Write a method that calculate value of Ο€ by using the above series, using

the following header:
public static double pi()
assume i = 1000000

ok so I have been testing it but I really did get any far :

for ( double i = 1; i< 1000000; i+=2) {

// with these I try to increment the value of i to get to the series. I did these after and test it and the output is all wrong and I know it

sum = (1/((2*i)+1));
sum = sum + (1/((2*i)-1));
sum ++;
double pi = 4*(sum);

// I know is wrong I but I can't figure it out what to do.

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C :: Algorithm To Find Kth Term Of A Series

Dec 8, 2014

I want to write an algorithm to find the kth term of a series given by the following recursive formula:

a_0=1 and a_(k+1)=a_k+1/k!

My code (part of it responsible for calculating the value of a series) does not want to compile:

Code:

float series(int n)
{
float F0 = 1;
float F;
unsigned int i;
if (n == 0)
return(1);

[Code]...

thus my question is why it does not want to work properly and what should i change (for certain factorial function is OK)?

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C++ :: Create A Program With Trigonometric Series

Mar 30, 2014

create a program that trigonometric series βˆ‘(k-3)sin(Ο€/k-3) with k = 4 until 13..

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C/C++ :: Print Series Of Text From Loop

Sep 29, 2014

I'm attempting to print a series of text from this loop, but for some reason all I am getting is the sum total and the number 1, like this

1 5175.11

When I want to get it for each iteration of the loop. I've cycled over this and compared it to my other loops I've used and I'm lost as to why this isn't working. I also tried using a do while but that didn't work as well.

for (double total1 = 0; total1 < goal; total1 + save_amt) {
total2 = ((factor - one) * save_amt);
total3 = (total2 / fr_interest);
total1 = total1 + total3;
months_dis = (months_dis + one);
cout << months_dis << " " << total1 << endl;
}

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C++ :: Lowest And Highest Number Of A Series?

Feb 26, 2013

I'm having trouble, I want the inner loop to display the lowest and highest score. If I assign initial values for the high and low score, it won't always work (because if no/ all scores are above/ below my initial values...)

But without assigning initial values for highscore and lowscore, One of them will always be undefined during the first runthrough.

#include <iostream>
using namespace std;
const int AGRADE = 90;
const int BGRADE = 80;
const int CGRADE = 70;
const int DGRADE = 60;
int main() {

[code]....

how do i set this up so it stores a low and high score, and then compares those to each next number in the series?

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C :: Port Mixer From OSS To ALSA

Jan 27, 2013

I'm new in c programming and my requirement is as follows. I make a code for oss mixer and now when new systems, throwing the OSS, and there is no /dev/mixer I want to port my code to alsa but my skills are minimal.

Code:
static int mixer_fd = -1, mixer_src = -1;
static char *devices[] = SOUND_DEVICE_NAMES;
int mixer_init(char *mixer_device, char *mixer_source) {
int i;

mixer_src = -1;
for (i=0;i<SOUND_MIXER_NRDEVICES;i++)
if (strcmp(mixer_source, devices[i]) == 0)

[Code] ....

Coexistance with OSS would be nice, so both could be used depending on users choice. Perhaps: if this first
part of the mixer name is a valid device file, try OSS, otherwise try ALSA?

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C# :: How To Multithread Port Scanning App

Jan 24, 2012

I'm creating a small port scanning app which use a port range defined by user.My problem with the code is that I find it not efficient enough meaning that it ping very slow, especially when ports are not responding meaning that I must wait for the timeout before continuing to next port.

I want to make this small app threaded. The problem here is that I'm kind of blank of how to implement threading in my program. This is my code which is a method which does the actual checking, the other part of the code is a simple button with for loop for advancing my port number.

Code:

private void ScanPort(IPAddress address, int port) {
using (TcpClient client = new TcpClient() {
IAsyncResult result = client.BeginConnect(address, port, null, null);

if (result.AsyncWaitHandle.WaitOne((int)nudTimeout.Value, false)) txtDisplay.AppendText("Port: " + port + " is open." + Environment.NewLine);
else txtDisplay.AppendText("Port: " + port + " is closed." + Environment.NewLine);
} }

I have read some basic threading tutorial but I just don't know how to implement this piece of code so I can check ports much faster.

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C :: Parallel Port Programming - On / Off LED

Sep 9, 2014

I try to ON and OFF the LED's via parallel port. I connect the cathode of LED's with pin number 18 that is ground and anode of each LED is connected through a 1K resistor to pin 2 to 8. I write the following programe

Code:
#include <dos.h>
#include <stdio.h>
#include <conio.h>
#define PORTID 0x378
void main(){
outportb(PORTID,0x00);
getch()
}

But when i connect the LEDS to the parallel port all the LEDS are LIT while i also change the 0x00 to 0xff and so on. But no effect on the LED's.

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C :: Parallel Port Where To Start

Jan 1, 2014

I started writing in c because I want to control relays with the parallel port, or anything else. Doesn't really matter what I use I just need to know where to start. Trying to send and receive data from the outside world with c programming on a GNU/Linux os? If so any good some what up to date resources online?

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C++ :: Output Voltage On USB Port

Oct 26, 2013

I am on a project. I have a laptop and It doesn't have a COM port. So what I would like to do is to get a usb to RS232 cable and write a code so to output voltages on usb and measure it on the RS-232 end. Can I vary the output voltage to my needs?

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C++ :: Port A Pc Game To Android

Jul 10, 2013

How do I port a pc game to android? Do I just include libraries or do I have to rewrite all my code?

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C/C++ :: How To Write To The Parallel Port

Apr 16, 2007

How To write to the parallel port under windows xp using Visual C++ ->MS Studio studio 2005

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Visual C++ :: COM Port Communication

Nov 30, 2012

How to communicate my COM PORT to my visual c++ ... Means i want to read data from my port and want to show in visual c++ so what to do ...

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C :: How To Find Longest Series Of Even And Positive Numbers

Mar 6, 2015

Example input: 2 4 6 -1 7 3 -2 1

Output: 3 3 (longest series of even is 3, longest series of positive is 3)

Here is the code:

Code:

#include <stdio.h>
int even(int x) {
return x % 2 == 0;
}
int positive(int x) {
return x>0;

[Code]...

My question is how to write this code if the prototype of function is:

Code: void series(int *array, int n, int (*s)(int), int **begining, int *lenght);

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C++ :: Setting Maximum And Minimum Numbers In A Series?

Dec 6, 2013

I need to write a program that not only calculates the minimum and maximum, but also calculates the average and the difference between the largest and the smallest.

Here's the code:

#include <iostream.h>
#include <conio.h>
#inlcude <math.h>
#include <windows.h>

[Code].....

I know the problem is the "sdt::cin" but I don't know what else to do

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C++ :: Recursive Function To Evaluate First N Terms In Series Specified

Oct 23, 2014

How to remake the code that i`ve written to have : a recursive function to evaluate the first n terms in series specified y= 1 - x + x^2/2 - x^3/6 + x^4/24 +....+(-1)^n x^n/n!

And this is my code:

#include <iostream>
using namespace std;
double power(int n, double x) {
double d =1;
for (int i = 1 ; i<=n ; i++)

[Code] ....

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C++ :: Reading Series Of Strings Into Array Then Output

Feb 24, 2015

The requirement was to set the txt files information equal to a variable before and not to put it directly into the array.

#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
using namespace std;
const int MAX = 24;
struct applicant_info {

[Code] .....

the txt doc looks something like this: file name: jobs4.txt

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C/C++ :: Find Longest Series Of Even And Positive Numbers?

Mar 16, 2015

program:

Example input: 2 4 6 -1 7 3 -2 1
Output: 3 3 (longest series of even is 3, longest series of positive is 3)

Here is the code:

#include <stdio.h>
int even(int x) {
return x % 2 == 0;
}

[Code].....

My question is how to write this code if the prototype of function is:

void series(int *array, int n, int (*s)(int), int **beginning, int *length);

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C/C++ :: Approximate Sine Function With Taylor Series

Dec 22, 2014

Write a C program with a separate function which calculates the sine function from the first principles according to the formula below. The code should find the sine value in 5 stages and then final answer

formula below :

sin(x) = x βˆ’x3/3!+x5/5!βˆ’x7/7!+x9/9!

I have done the code and it just gives me a final sine wave

it should find a error then plus one so on till it gets the answer

Link:

These are images of what it should look like and the image of a the formula ....

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C/C++ :: Find Values For Arctan Of X Using Taylor Series

Feb 5, 2015

I'm trying to write a program to find values for arctan of x by using taylor series. An initial value of x is given by the user and then it should print solutions from arctan(x) to arctan(1) in increments of x+0.1. It prints correctly but gives incorrect values after the initial x. I'm new to c and need some way to 'reset' the functions f1 and f2 for each increment of x (I think...)

Here's the code

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <iostream>
#include <fstream>
using namespace std;
int main() {
/* Define the beginning of the program and each variable. Also opens a text file to be written to */
FILE *f = fopen("arctan.txt", "w");

[Code] ....

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C/C++ :: Program To Find Arctan(x) Using Taylor Series?

Mar 10, 2015

I need to be able to test this algorithm 50 times including extremes and invalid inputs.

I keep getting invalid input

#include <stdio.h>
#include <math.h>
void main() {
double x, i, y, z;
int N, n;
printf("Enter limit polynomial N

[code]....

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