C/C++ :: RAM Does Not Give A Valid Preprocessing Token

May 2, 2014

#define PROJECT_ID ram  
#define QUOTES(FILENAME)  #FILENAME
#define DATA_VAR_FILENAME(PROJECT_ID) QUOTES(../##PROJECT_ID##_data_var.h)
#define DATA_VAR_FILE(PROJECT_ID) DATA_VAR_FILENAME(PROJECT_ID)
#define CUST_DATA_VAR_FILENAME DATA_VAR_FILE(PROJECT_ID)

When I tried to include CUST_DATA_VAR_FILENAME like below
#include CUST_DATA_VAR_FILENAME

Will get below error
error: pasting "/" and "ram" does not give a valid preprocessing token

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C :: Code Does Not Generate Valid Reprocessing Token

Mar 11, 2013

Why does the following line of code generate error as " pasting / and / doesn't generate a valid reprocessing token"?

Code:
#define comment /##/
int main() {
comment printf("hello");
return 0;
}

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C :: Expected Expression Before Token

Jun 18, 2014

I wrote a program, that generates 20 random integers, and stores them in an array. Then I decided, to build more functions to it, i.e why not have it to display the lowest integer of an array. I created my function,

Code:
int minValue( int field[ ] )

and got my code in side, which (technically) works. In my main() function I'm calling

Code:
printf( "The smallest value of an array is: %d
", minValue( field[] ) );

and I'm getting an error trying to compile it.

Code:
randomArray.c:62:74: error: expected expression before ']' token
printf( "The smallest value of an array is: %d
", minValue( field[] ) );

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Visual C++ :: Token Going Null On Second Iteration Of Loop

Jan 23, 2013

Code:
while(!pile.eof()){
pile.getline(inputbuff,199,'
');
count++;

[Code] ....

the loop iterates the first time through qualifying for (count % 2 != 0) because count is at 1 so it stores the characters after the comma into tok and does it successfully according to my debugger.then the while itterates again because it doesn't qualify for the next if. this time it does qualify for count % 2 == 0 but my tok pointer is now null , how can that be? does it go null when the while loop itterates for the second time? that shouldn't be because my integer count doesn't reset?

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C/C++ :: Sequential Matrix Multiplication Program - Syntax Error Near Unexpected Token

Apr 30, 2014

I wrote a sequential matrix multiplication program in c.

After execution i get error like
./mul.c: line 11: syntax error near unexpected token `('
./mul.c: line 11: `int main(){'

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#define wA (30 * 16)
#define wB (50 * 16)
#define hA (80 * 16)
#define hB wA
#define wC wB

[Code] ....

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C++ :: Errors With Unresolved Token And Unresolved External Signal

Jul 10, 2013

My program will not run because of error LNK2028 "unresolved token" and error LNK2019 "unresolved external signal" and I do not know why. My teacher says that I need to make the constructor and display functions display class variables in different formats, but I do not know what to do with that. Here are my 3 files:

Header take 2.h:

#pragma once
#include <iostream>
#include <string>
using namespace std;
class Heading {
private:
string company, report;

[Code] ....

Here are the errors:
Error1error LNK2028: unresolved token (0A0003C9) "public: __thiscall Heading::Heading(void)" (??0Heading@@$$FQAE@XZ) referenced in function "int __cdecl main(void)" (?main@@$$HYAHXZ)c:UsersOwnerdocumentsvisual studio 2012ProjectsClassLibrary2ClassLibrary2Source1.objClassLibrary2

[Code] ....

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C++ :: Valid Function Prototypes?

Mar 11, 2013

I was asked by a friend about validity of following function prototypes,

void func1(int = 0, int*);
void func2(int = 1, int& = 2);
void func3(int*, int& = 3);
void func4(int& = 4, int* = 0);
void func5(int& = 0, int = 1);
void func6(int = 5, int& = 6, int* = 0);

I think the only prototype that is invalid is func1 because it does not have default parameter on the far right.

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C# :: Valid To Use And / Or When Using Conditional Operator

Jan 31, 2014

I want to know if it's valid to use and/or when using the conditional operator.

Example:

value = textBox1.Text;
decimal? qty = (value.Equals("0") || value.Equals("0.0")) ? null : (decimal?)decimal.Parse(value);

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C++ :: Ofstream Valid Path And Name

Jan 27, 2013

The following code writes to a file on either local disk to a remote disk (commented out code) on Windows 7 platform.

Code:
#include <iostream>
#include <fstream>
using namespace std;
int main () {
ofstream outfile;

[Code].....

The documentation does not specify what is a valid filename (path and filename). For example, will the "\server emp" path work on all operating systems to access a samba share? Does the constructor accept forward and backward slashes as folder separator on all operating systems?

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C++ :: Entering Valid User Input?

Mar 19, 2013

How can I write my simple program so if the user enters an invalid number, The program won’t exit? I know I am supposed to use a if (cin) or if (!cin),

But I don’t know where in the program or how I should use it. Right now my Program looks kind of like this:

If (number > 1 && number < 1001)
Go through some function loops
Else
Cout << “invalid number”;

I need to write it so when the user enters an invalid number, the program would Keep asking for the right number until it's given.

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C :: Valid Email Address Check

Jul 13, 2013

Now I have to write a code which would determine whether an Email address is valid or not.

In my exercise a valid address should look like this : ___@___.___.il (___ for any letters)

E.g. Valid address:

something @ something . something . il Invalid: tami @ jce . ac . uk

(without spaces of course)

Code:
#include <iostream>
#include <string.h>
using namespace std;
int isValid (char s[]) {
int length=strlen(s), ind1=0, ind2=0;

[Code] ....

It doesn't work well. It says both addresses are wrong when the 1st one isn't.

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C :: Check If Certain 9x9 Sudoku Grid Is Valid?

Sep 30, 2013

So my program is to check if a certain 9x9 sudoku grid is valid. i have to get the input through command argument. so for example.

./a.out sudoku.txt

So we have make my c program to use FILE I/O open and what not

program behavior must be as follow File does not exist.File contains something other than a sequence of 81 integers (too many, too few, non-int).

One or more of the values is not in the range 1..9 Violation of Sudoku rules (this is the big one!) In case 4, you should report the violation (or any one of the violations if there are multiple -- you do not need to exhaustively enumerate all violations).

For example: Row Violation: entries (2,2) and (2,6) are both equal to 7. (Similarly for column and box violations). All i know is that i need to make a 2d 9 by 9 array

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C :: Are Musical Notes Valid In Program

Jul 21, 2013

Is this a good way of writing this program?I wanted to start fresh with my new code though and a better title.Basically, I took what I learned from my questions in that thread and managed to build a list of musical notes( octaves, frequencies, sharp symbols, basically everything ).

Code:

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <math.h>
#define MAX_NOTES 88 /* 88 keys on a standard piano */

[code]...

I already know the frequencies are correct( they are rounded, but they should be close enough to the value ), but I wasn't so sure about the note labels. Obviously though, I'm not done with this program and I will be adding most of the functions Anduril suggested to take a text file and convert it into music. I just wanted to make sure I had everything correct before moving on. I probably didn't do the GetNextOctave() and GetNextNote() functions very efficiently so need suggestions on those functions also.

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C++ :: How To Make Sure Dereference To Vector Is Valid

Oct 6, 2014

I have this piece of code in parts of my path finding algorithm

for( int head; head < q.size(); ++ head ){
walk& w = q[head];

// do manything with w
if( some_condition ) q.push_back( walk( w.x + 1, w.y, head ) );
}

However I notice that sometimes w is cannot be dereferenced. It can but it throws junk number at me. Perhaps the vector is changing it size and move the whole array to a different location. Is there anyway to make sure that w is always valid ?

I just want to use w because of shorter typing and cleaner look not because of performance. I also refrain from using macro.

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C++ :: Entering Valid User Input?

Mar 20, 2013

Entering valid user input?

How can I write my simple program so if the user enters an invalid number, The program won’t exit? I know I am supposed to use a if (cin) or if (!cin), But I don’t know where in the program or how I should use it. Right now my Program looks kind of like this:

If (number > 1 && number < 1001)
Go through some function loops
Else
Cout << “invalid number”;

I need to write it so when the user enters an invalid number, the program Would Keep asking for the right number until it's given.

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C++ :: Check If Given 8 Byte Is A Valid Double

May 28, 2014

Is there a function in C/C++ that can check if a given 8-byte data block is a valid double value in the valid range?

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C++ :: Why Is It Valid To Include Header Files Twice In A Project

May 12, 2013

if I include iostream twice in my project why is that valid? Wouldn't the linker see that there are two definitions of it and report a error, but it works?

By project I mean in multiple translation units.

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C# :: Rich Text Box File Format Not Valid

Oct 9, 2014

I have the below code, the first rich text box works fine but on the second i get the error

An unhandled exception of type 'System.ArgumentException' occurred in System.Windows.Forms.dll

Additional information: File format is not valid.

System.Windows.Forms.RichTextBox rtBox = new System.Windows.Forms.RichTextBox();
rtBox.Rtf = reader["Change_Description"] as string;
Change_Description = rtBox.Text;
System.Windows.Forms.RichTextBox rtBox2 = new System.Windows.Forms.RichTextBox();
rtBox2.Rtf = reader["Change_Justification"] as string;
Change_Justification = rtBox2.Text;

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C Sharp :: Set Valid Values In Char Type?

Oct 10, 2014

C# type setting a char? I have tried setting as characters, as integers but nothing seems to work?

last try: char mchar = 'X'; // Character literal

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C Sharp :: String Was Not Recognized As Valid DateTime

Jun 10, 2013

I am getting this error whenever I leave my drop down lists blank: "String was not recognized as a valid DateTime". My code is below:

aspx:

asp:DropDownList ID="cboDay" runat="server" Width="55px" Height="32px" AppendDataBoundItems="true">
<asp:ListItem></asp:ListItem></asp:DropDownList >
<asp:DropDownList ID="cboMonth" runat="server" Width="80px" Height="30px" AppendDataBoundItems="true">

[Code]....

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Visual C++ :: Whether 0xFFFF Is A Valid Unicode Character

Dec 22, 2013

I just wonder whether 0xFFFF is a valid Unicode character.

When I using the following code:

CStringW strTempW;
CString strTemp1;
INT_PTR nLen;
strTempW.Format(L"%c", 0xFFFF);
nLen = strTempW.GetLength();
strTemp1 += strTempW;
nLen = strTemp1.GetLength();

After executing the first codeline strTempW.Format(L"%c", 0xFFFF), I will get strTempW of length 1, but cannot see it first character in Visual Studio watch window.

After executing the codelilne strTemp1 += strTempW, I will get strTemp1 of length 0.

Whether 0xFFFF is taken as a valid Unicode or not?

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C :: Simple Valid / Invalid Function - Determine Either A URL Address Is Correct Or Not

Jul 13, 2013

I have to write a code which would determine either a URL address is correct or not.

Now, a valid address should look like: "www.something.something.uk".

It has to have 3 dots, 3 w-s in the beginning, and it must end with "uk".

E.g.

Valid addresses:
1. www.jce.ac.uk
2. www.tr2213.oi34.uk

Invalid addresses:
1. www2.jce.ac.uk
2. òæøéàìé - îëììä à÷ãîéú ìäðãñä éøåùìéí - ìéîåãé äðãñä ìúåàø øàùåï
3. www.something.uk

Just to be clear, this criteria mentioned above is not real, just homework

Code:
#include <iostream>
#include <string.h>
using namespace std;
int isValid (char s[])
{
int dots=0;

[Code] ......

It tells me both strings are incorrect but the first 1 is.

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C# :: Give Image Name As Sequence Number?

Nov 18, 2014

I'm saving the images in folder by using:

webClient.DownloadFile(href, sourcepath);

I don't want to give name as Current date and time..shown in given below code

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++ :: How To Give Validation For Character String

Aug 26, 2013

If i have character string 'char name[30]' how to give validation for the name entered by user?

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C Sharp :: How To Give Backcolor To The Button

Jul 14, 2014

I am designing a form ..in wich i used 3 buttons...from these 3 butons ,i wanna give backcolor to button1 . How to give it a backcolor?

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C Sharp :: How To Give Scroll Bar For Group Box

Oct 11, 2012

Is there any methods to add scroll bar for group box

My code scenerio is: I have many groupbox in form, all group box will be appears in same place and also height and width is fixed. I'm doing group box visible true/false according to condition.

So some groupbox ecxeeds the width and heighto so I want to put this all in scroll Bar

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