C :: Save Output From Ansi Escape Sequence To Variable

Apr 13, 2013

I'm trying to get the current position of the cursor in the terminal window. I know that the ansi escape sequence "33[6n" will display the current x and y location of the cursor. But what I can't figure out is how to store the x and y locations into their respective integer variables.

This is what I've done so far:

Code:
#include <stdio.h>
int main(void) {
int line, column;
char cursor_curr_pos[9];
char escape_sequence[] = "33[6n"; //outputs x and y location of cursor e.g. ^[[18;1R
snprintf(cursor_curr_pos, 9, "%s", escape_sequence); //save output to string
sscanf(cursor_curr_pos, "^[[%d;%dR", &line, &column); //only read numbers from string
}

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C :: Warning - Unknown Escape Sequence

Feb 2, 2013

I'm doing some file input/output work here in C and received this warning during compilation (GCC). My research indicates that this error is in response to white space or a character cancellation function or something like that. I'm not 100% sure exactly what it means. My code works fine, but the following warning does appear.

Code:
warning: unknown escape sequence: '40'

Here's my code (excluding a bunch of comments at the bottom of the file).

Code:
#include <stdio.h>
int main(void){
FILE *file;
file = fopen("Running Practice.c", "a");
fprintf(file, "Testing...
");
fclose(file);
}

I believe the error I received has to do with either the ' ' I used when appending text to my file, or something to do with there being a space in the file name itself.

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C Sharp :: Write Escape Sequence For Epson Printer

Sep 7, 2012

I want to send control codes for Epson printer with c# application, I wrote some code, I have the connection with the printer, but when I am sending codes it not responding. On the other side, I found Java application for sending control codes, from that app some of the codes is working but not all of them. For example I want to use ESC EM 66 control code but when I am sending this code, printer not responding or just print the code in numbers.

The code who I use is:

class Program {
public const short FILE_ATTRIBUTE_NORMAL = 0x80;
public const short INVALID_HANDLE_VALUE = -1;

[Code]....

When I am using the method GetDocument() printer is not responding, but it prints only text when I call the buffer variable:

lpt.Write(buffer, 0, buffer.Length);

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C/C++ :: How To Save New Input Using Output

Sep 11, 2012

I have a project, a montly paycheck. So it checks the monthly paycheck of each employees. but my problem there is how to add a new employee when u are a user or in the output of program?

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C++ :: Save Variable From User Input?

Jul 30, 2013

I'm having trouble trying to save a variable from an input of the user. Then use it when i start up another .exe.

If it makes any difference I am using dev c++. I'm using the input as an a or b so some one will put a for english or b for spanish. after that I want to use that info in another if statement of another .exe.

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C :: Save Data From Global Variable Into Linked List

Jul 6, 2013

I'm trying to run so called student-administration program.I got functions that can read and write student data, but the one saving the data from about 30 students has some problem that I can't figure. (warning: I'm quite new to C programming)so this is the code:..I guess I can't use global variables as function arguments?

Code:

//global variables
static char ReturnName[31];
static char ReturnFirstName[31];
static float ReturnAverage;
}

[code]....

incompatible types when assigning to type 'char[31]' from type 'int'

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C :: Using A Printer In ANSI

Oct 29, 2014

Is there a way to access the printer in ANSI C ?

I have written a program and would like to print out the data (held in a file).

All I can find is that there seems to be no way to send a file to the printer and stay within the confines of ANSI C.

I am restricting my use to ANSI specs for the portability. Do I have any options?

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C :: Print String With Escape Characters

Mar 7, 2013

is there any function to print a string with all the escape characters in it?

For example, instead of printing:
This is a string.

It would print:
This is a string.

Or in Windows:
This is a string.

I know that you can debug the code to find the variable contents, but is there any way to accomplish this with some standard library function?

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Visual C++ :: Convert Unicode (UTF-16) Functions To Ansi (UTF-8)

Nov 20, 2012

Working in Win32 console app (VS 2010) I have been trying to convert several Unicode (UTF-16) C++ functions to Ansi C (UTF-8). The test app includes two tokenizer classes, each of which work perfectly well in their respective environments, CTokA and CTokW (UTF-8 and UTF-16).

A problem arises when I attempt to run the UTF-8 functions when the Character Set properties is set to 'Use Unicode Character Set' in that std::string manipulations do not perform as expected, e.g.,

printf("start
");

gets reproduced as

printf("start
");══════════ ²²²²

Attempting to null terminate the string where it is supposed to end simply results in a space in that position and the garbage end persists, e.g.,

printf("sta t
");══════════ ²²²²

Code:
sline[11] = 0x0000;

If I attempt to change the Character Set property to 'Use Multibyte Character Set' or 'Not Set', the app will not compile and hundreds of errors occur. Of course, I can eliminate all of the UTF-16 code, but it strikes me that it should not be necessary. Perhaps if M$ made everything UTF-16 without all of the necessary decorations like 'L' and '_T(', life would be much simpler. Unfortunately, I have a very extensive UTF-8 app under 10 years of development that works quite well, but my UTF-16 (Unicode) conversion doesnt work as well because of the mixing of pointers (I think), so I have had to revert much of the code back to UTF-8. (All of which has nothing to do with my question but is simply psychotheraputic for me to ventilate on.)

My question is this: Can UTF-8 and UTF-16 code coexist in a single Win32 console app?

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Jan 28, 2015

1st when i fill the things on form then saved in database after saving record when i want add another record it shows an error. after saving it saves new record refresh doesn't work

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Visual C++ :: Unable To Save File Using Cfiledialog Save As In MFC

Nov 5, 2013

I am trying to develop a GUI using MFC, but I am having trouble using CFiledialog to save a file. The problem is, the file is not getting saved to the folder when I use the CFiledialog. Below is the code I am using.

Code:

CString szFilter = "XNRep Files (*.xnrep)|*.xnrep||";
CString s = "xnrep";
CString t = "";
CFileDialog fileDlg(FALSE, s, t, NULL, szFilter);
if(fileDlg.DoModal() == IDOK)
{
std::ofstream file;

[Code]....

After the file dialog opens up, I enter the name of the file and select OK button. But the file does not show up in the directory I am saving to.

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Sep 24, 2014

How can I output the address of a variable in binary?

#include <iostream>
#include <sstream>
#include <string>
using namespace std;

[Code] ....

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Oct 11, 2013

What does the order of console output from your program tell you about when the static object is initialized?

#include <iostream>
using namespace std;

//class
class Firstclass {
private:

Firstclass(); //constructor
~Firstclass(); //destructor

[Code] ....

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?

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Mar 5, 2013

I need to write a ANSI program to print out each command line argument on a separate line using a for-loop. also it need to print the name of the executable .so far I have

Code:

#include <stdio.h>
int main(int argc, char **argv) {
int i;
printf("")

[code]....

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Jan 14, 2014

unsigned char x1, x2, x3;
size_t ix = 0;
size_t count;
std::string Input = "EFEF9E9475C8C2D938C204EAE058F2B3";

[code]....

when debug and have a watch on out i get incomplete sequence,

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Mar 6, 2013

Code:

int main()
{
int n;
int* fib;
printf("
Fibonacci test 1: enter an integer
");
scanf("%d",&n);
fib = fibonacci(n);
printf("fib(%d) = ", n);
for(int i = 0; i < n; ++i){
printf("%d ", fib[i]);
}

What should I do/write for the fibonnaci function Code: int fibonnaci(int size)

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Aug 22, 2013

My assignment is to write a program that reads in a number from the user and then generates the hailstone sequence from that point. I'm not sure if I should use an if statement or string loop. The beginning of an attempt

#include <iostream>
#include <vector>
#include <string>
using namespace std;
vector<string> Numbers;
/// if n is equal to 1 the sequence has ended
/// if n is even divide the number by 2
/// if n is odd, multiply by 3 and add 1 to new number

[Code] ....

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C++ :: Finding Nth Number Of A Sequence?

Sep 16, 2013

I have to write a program to find the nth number of the Ulam numbers.

It's a bit complicated to explain what an Ulam number is but Wolfram explains it very well here: [URL]

I have to find the nth Ulam number but I don't know what I have to do to get that. My program gives me all the Ulam numbers from a range of 0 to n.

What I want the program to do is tell me that the 49th Ulam number is 243.

/*
C++ Program to find nth Ulam Number
*/
#include <stdio.h>
#include <iostream>
#include <vector>
using namespace std;
int main() {
int num = 0;
vector<int> v;

[code]....

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Oct 6, 2014

I made a program that prints out arithmetic sequence.. but problem is that,

when I enter a(first term) =5, d(differnce)=2.4 and n=3 the program prints out only first two terms not three.. for all the other numbers it works correctly..

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Apr 24, 2013

I am trying to write a program that checks whether the number is in sequence(as in if the numbers are in order it is a sequence). Ex: If the numbers are {1,2,3,6,7,8,9,10,11,13,15,17,20,21}, then, the underlined parts are a sequence. Now i want to find

1) the no of sequence in the array(in the above it is 3 )
2) the longest sequence (7to 11 which is 5).

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May 5, 2014

Q) How to do nested loops?
Q) How to do Array?
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Feb 16, 2014

The next code is right. I mean it works. It gives the sequence of fibonaci numbers ...

Code:
#include <iostream>
#include <iomanip>
using namespace std;
int fibo(int pos) {

if(!pos)return 0;
if(pos==1)return 1;

[Code] .....

But.... when I change the lines:

Code:
int r1=fibo(pos1);
int r2=fibo(pos2);
int r=r1+r2;

For the lines:

Code:
int r=fibo(pos1)+fibo(pos2);

It doesn't work right. Apparently it should work the same.

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Nov 18, 2014

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string sub = @"Gadhada";
DirectoryInfo subFolder = dir1.CreateSubdirectory(sub);
Imagename = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() +

[Code].....

I want to save my imagename as 1.jpg, 2.jpg, 3.jpg.

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C/C++ :: Side Effect In Sequence Point?

Nov 4, 2014

A sequence point in a C program is defined as "Any point in a program's execution at which it is gauranteed that all side effects of previous evaluations will have been performed and no side effects from subsequent evaluations have yet been performed."

What is a side effect?

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