I am currently doing a complex number calculator ,and i wish to output my data to a txt.file . i tried fstream and it doesnt work. However the txt.file was created but no text was output.
Below is the program:
#include<iomanip>
#include<cmath>
#include<iostream>
#include<fstream>
using namespace std;
#define PI 3.14159265358979323
double z,x;
[Code]..
When impedance A & B are in series,the effective Impedance is " <<setprecision(4)<< z << " + j" <<setprecision(3)<< x<<endl;
else
cout << "
When impedance A & B are in series,the effective Impedance is " <<setprecision(4)<<z << " - j" <<setprecision(3)<< x*(-1)<<endl;
}
void Complex::showdiv(double &z,double &x) {
if ( x>= 0 )
cout << "
When impedance A & B are in parallel,the effective Impedance is " <<setprecision(4)<< z << " + j" <<setprecision(3)<< x <<endl;
else
cout << "
When impedance A & B are in parallel,the effective Impedance is " <<setprecision(4)<<z << " - j" <<setprecision(3)<< x*(-1) <<endl;
}
class Polar:public Complex //inheritant from class Complex
{
protected:
double r,d,r2,d2;
public:
void PolarValue();
void ShowPolar();
Write a program that reads from total.dat file and displays its contents to the console. The program should allow the user to add new entries to the file.
So far this is what I've got and I'm not sure if I even started right.
#include <iostream> #include <fstream> using namespace std; int main () { ifstream dataIn; ofstream dataOut; dataIn.open("total.dat"); cout << dataIn; return 0; }
I have 18,000 lines of code that i would like to upgrade to include a log file. I want to replace the cout with a stream or something similar so that i can easily output to the console and to a log file at the same time with minimal change to 18,000 lines of code. I'm nearly there.
I used this post heavily as a reference; [URL] .... however it is highly incomplete and this is above my knowledge so I'm struggling somewhat.
I was able to get the bulk of it working with some guess work and modification to the code from that link.
For some reason i had to comment out "mstream(void);" and "~mstream(void);"
to work for endl as per the previous link. Not sure if i'm even putting it in the right place. Otherwise the code works fine for streaming to both locations and such. See the code below;
#include <iostream> #include <fstream> #include <string> using namespace std; class mstream {
I'm supposed to read a text file and display it in the output. I have it down except my formatting. I just cannot get it to just skip one line rather than multiple. I know why though because my char has a max of 11 and if I put a character lets say mango, it is going to fill in the rest with white spaces. It's supposed to display like this:
Mango Strawberry Grapes
But instead I get something like this
Mango
Melon
Grapes
I am using isspace but it's not working.
//source code
#include <iostream> #include <iomanip> #include <cstdlib> #include <cmath> #include <fstream> using namespace std; class CFile
I'm trying to write something that when a user is at the command line, the user can type and it displays of list of commands the user can use to run the application.
is there a way to change output of console without clearing the screen? so making some kind of animation?
e.g.
I have used
Code: cout << "Hello";
is there any way I can erase last "lo" and replace it by "p" so I will have "Help" without clearing the screen ? just changing the output like some text file?
I tried using something like this
Code: #include <iostream> using namespace std; int main() { cout << "abcd"; long pos = cout.tellp(); cout.seekp(pos-2); cout.write("ef", 2); cout.flush(); cin.get(); return 0; }
Code: Real x = (arg.state.X.abs - mViewport->getActualLeft())/float(mViewport->getActualWidth()); Real y = (arg.state.Y.abs - mViewport->getActualTop())/float(mViewport->getActualHeight()); _trace("%f %f ", x,y);
I am wrapping up a Linux/C programming assignment that requires several small programs for encrypting and decrypting text. There is a bash grading script which will be used to assess the performance of my programs. The script runs fine on my local machine and all of my tests pass, but when I run everything on my University's server via SSH, the script is not behaving the same. I am fairly certain the error exists somewhere in my C code, because no other students are having this issue. The 4 main programs consist of 2 daemons which wait for clients to connect via sockets, and the two clients. There is a daemon/client pair for handling encryption, and another for handling decryption.
And here is a screenshot of what happens with the same files on the remote server:As you can see, in the 4th and 5th tests (where the program's output should read), it's instead showing "ssIgnore this message". In later tests (not pictured) there is another message that reads "ddServer to client message". This text appears nowhere in my code or the grading script, so it must be server-side.
Alright, so to better myself with network logic I've decided to make a small net game.
I need to input commands to the console as well as output status updates at the same time. I'd prefer to write a gui interface for that, but I'd rather work with WinAPI as little as possible (I mean, look at the way it's designed...).
I'd like to do this with standard operations, limiting dependencies is a must for me.
Doesn't it allocate the class static variable to the heap, thus executing its algorithm then destroying it when the program ends - or. What exactly does it tell me? When the static variable is initialized, it takes place first before any of my other functions?
I used to use OutputDebugString, and not using it now because it only allows to strings to be outputted, are there any methods that I can dump virtually anything to the console?
cout << thing << endl;
But what if I am not start running the program from the command prompt?
#include <stdio.h> main() { int c, n1; n1 = 0; while ((c = getchar()) != EOF) if (c == '') ++n1; printf("%d", n1); }
I have a more complicated program I'm wishing to have display the output, however, to save some time I'm using an example of a shorter version. count the lines in input and display the output in terminal when ./program is executed after compilation. To count and compute lines, words and within arrays.
Convert this code into one where you can input the file directory from the console?
#define WIN32_LEAN_AND_MEAN // prevent windows.h from including "kitchen sink" #include <windows.h> #include <iostream> #include <string> using namespace std; int main() {LPCSTR Application = "C:Program FilesWindows Media Playerwmplayer.exe"; // Media file extension must be provided // Paths are quoted
[Code] ....
This code works but the directory can only be changed from the code not the console.
I am stuck in visual studio 2010 file I/O ... i placed file1 file2 using the following program under VS2010/projects/projectname/file, file1 and also in debug also once......I am actually using cmd line arguments in debug mode
Code: // feof files.cpp : Defines the entry point for the console application. //
#include "stdafx.h" #include<stdio.h> #include<stdlib.h> #include<conio.h> int main(int argc, char* argv[])
[Code] ....
I dont think in C++ forum the printf will do any problem...when i run the program it says "cannot open source file" and a window appears saying"Debug assertion failed"....and other details such as Expressionstream!=NULL).perror
Having some trouble with an assignment. Here is the prompt. Write a program that reads the telephone.dat file and displays its contents on the console. The program should allow the user to add new entries to the file.
I have saved the file into a resource file within visual studio and I am trying to run the code to where the file will be shown when I run the program. I know that the program is running and the file is there because if i misspell the filename it will give me the error message. I don't know how to make the contents of the file display. Here is what I have so far.
#include <iostream> #include <fstream> #include <string> using namespace std; int main() { ifstream inputFile;
