C/C++ :: String Not Being Declared

Aug 18, 2014

I'm setting the Arduino to send data from it's analog pins through to my PC, but to keep it easier to manage, I'm trying to turn the analog reading into a character string, so instead of sending just the value, it instead sends "Pin 1: 345" for example, where 1 is the number of the analog pin in use, and 345 is the reading from that pin.

In my code below, the problem is getting my string variable to be recognized. When I try to verify the code, the error message I get reads "'string' does not name a type" yet when I compare it to other string variable examples on the internet, I can see no difference between mine and the ones online.

I've tried having the declaration in the loop, outside of the loop, and now at the start with the other declarations.

#include <string>
using namespace std;
string outText;
void setup() {
Serial.begin(9600);

[Code] .....

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C# :: Unable To Implicit Convert Type Int To String Though Declared Variables As String

Mar 26, 2014

Ok, so I'm writing this code and when I build it keeps saying cannot implicitely convert type int to string even though I declared my variables as string. Why is it giving me this error?

private static string Repair()
{
string result="";
string beep;
string spin;
Console.WriteLine("Does your computer beep on startup?:(y,n)");

[Code]...

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C :: Declared A String Constant And Trying To Print Length Of String

Oct 9, 2014

In this code, i declared a string constant and trying to print the length of string. I know that if i write char a1[7] or char a1[] than it runs and give aggregate output, but in this case it is giving double length of string.

Code:

#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
}

[code]....

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C++ :: Why Does GetY Have To Be Declared After Struct Y Is Declared

Jan 30, 2013

struct x
{
y *GetY(); //error: what is "y"?
struct y
{
};
};

Why does GetY have to be declared after struct y is declared? I thought order of class members in C++ did not matter? Does it have to do with the way parsing is done?

EDIT: It also doesn't work if I typename x::y *GetY();, which makes even less sense to me.

EDIT: It works if I forward declare, but this goes against everything I know about C++ classes...

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C++ :: Memory And Int Not Being Declared

Mar 19, 2013

I had a quick question regarding a program I am trying to complete. I have the basics worked out, and everything seems to be done, but I am running into two issues.

1= The program keeps telling me "Run-Time Check Failure #3 - The variable 'order' is being used without being initialized."
and
2= When I reach my output screen I receive "Unhandled exception at 0x7751c41f in CISC 192 Project 3.exe: Microsoft C++ exception: std:Out_of_range at memory location 0x002eefb8.."

While the first one isn't necessarily a deal breaker the second one definitely is.

Code:
// Bookstore Project 3.cpp : Defines the entry point for the console application.
// Declarations
#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <cstdlib>
#include <string>
#include <istream>

[Code] ....

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C++ :: Swap Is Not Declared?

Jun 15, 2013

#include <iostream>
#include <conio.h>
using namespace std;

[Code]....

appears that error on line 25 & 30 where swap1 & swap2 is not declared in this scope.

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C++ :: Declared By Function

Aug 20, 2013

MCLoad.h - MCLoad.cpp
bool MCLoad::Load(SDL_Surface* Name, std::string File){
Name = NULL;
Name = SDL_LoadBMP(File.c_str());
if(Name == NULL){return false;}
else{return true;

[code].....

compiler gives me the error bg was not declared in this scope. i googled it.

in MCInit #include <SDL/SDL.h> #include "MCLoad.h"
in MCLoad #include <SDL/SDL.h> #include <string>
in MCClean #include <SDL/SDL.h> #include "MC.h"

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C++ :: Fin Undeclared Identifier But Is Declared

Apr 8, 2013

Program is not finished as I can't get passed read_data

Error:
"error C2065: 'fin' : undeclared identifier
error C2228: left of '.open' must have class/struct/union type is ''unknown-type''

#include "stdafx.h"
#include <iostream> // for streams
#include <iomanip> // for setw()
#include <fstream> // for files
#include <cstdlib> // for exit
using namespace std;
void read_data(int A[], int size)

[Code] .....

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C++ :: Variable Not Being Declared Before Initializing - But It Is?

Mar 31, 2014

I'm working on this program, and when i run it for 'p', 'P', or for a incorrect service code a error message pops up saying that "totalCost is being used without being initialized". I don't want to change it to switches, case, and breaks now because I've come too far to change it all. I have that variable right here just below.

#include <iomanip>
#include <iostream>
using namespace std;
int main() {
int acctCode;
double nightCost;
double totalCost;

[Code] ....

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C++ :: (X) Not Declared In This Scope Error

Oct 29, 2014

main.cpp

#include <iostream>
#include "sushi.h"
using namespace std;
int main()
{
do {
......sushi go;
......string x; <----------------------------Declared x here
......cout << "wanna use a banana?" << endl;

[Code ....

Error reads: 'x' was not declared in this scope.

How do I fix this?

P.S The sushi class does not matter, that is all perfect. Also, the dots are to represent my tabbing to make it easier to understand.

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C/C++ :: Rename Not Declared In This Scope

Jan 10, 2015

For some reason my compiler says "rename not declared in this scope" .... Isn't it declared in iostream? Or is rename only for C not C++? And if it is only for C how do I rename a file in C++ then?

#include <iostream>
#include <cstdlib>
using namespace std;
int main(int argc, char* argv[]){
char oldname[] = "RomeTW.exe";

[Code] .....

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C++ :: Fprintf / Fclose Was Not Declared In This Scope

May 20, 2013

I have this error - [Error] 'fprintf' was not declared in this scope (line 32)

and this - [Error] 'fclose' was not declared in this scope (line 33)

here's my code.........

1 #include <iostream>
2 using namespace std;
3 #include <windows.h>
4 #include <winuser.h>
5
6 int save (int key_stroke, char *file);

[Code] ......

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C/C++ :: Finding Variables Declared In Programs

May 6, 2014

Is there any way to find the variables declared or defined in a c program and print those variables?? E.g. this is the code

#include<stdio.h>
int main() {
int a, b, c;
printf("Enter two numbers to add");
scanf("%d%d",&a,&B)/>;
c = a + b;
printf("Sum of entered numbers = %d",c);
return 0;
}

I want to print all the variables been used. I used (gdb) info locals but its not giving the proper ouput.

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C/C++ :: Variable Not Declared In Scope Error?

Jan 27, 2014

I'm working through this neural network tutorial, unfortunately I get stuck trying to compile on line 28, saying "error: 'neuronNum' not declared in this scope." I seem to always get stuck on these kinds of errors, yet I don't understand because I though that the variable was declared and initialized within the for loop.

#include <iostream>
#include <vector>
using namespace std;

[Code]....

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C/C++ :: Error - Grid Was Not Declared In Scope

Jan 28, 2014

I'm trying to make a dynamic 2d array of a Tile Object I created, the Dynamic 2d array was working when I tested it as an int array but not that I gave it a type of Tile it is giving me the above error. I'm reading values from a .txt .

tile Tile;
Tile **grid;
grid = new Tile*[a];
for (int i = 0; i < a; ++i) {
grid[i] = new Tile[b];
}

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C++ :: Not Declared In Scope And No Member Name With Vectors

Mar 31, 2015

Code:

#include <iostream>
#include <vector>
#include <cmath>
#include "ANN.h"
using namespace std;
const int NUM_HIDDEN_NEURONS = 3;

[Code] ....

So I am getting 2 errors. Here is both of them.

ANN.cpp: In member function "void ANN::JustDoIt()":
ANN.cpp:36: error: "class std::vector<HiddenNeuron, std::allocator<HiddenNeuron> >" has no member named "SetWeights"
ANN.cpp: In member function "void ANN::SetData(double, double)":
ANN.cpp:85: error: "SetNeuronData" was not declared in this scope

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C++ :: Variables Declared - How Many Times Loop Executes

Jan 27, 2015

Assume all variable are declared correctly, the following for loop executes how many times?

for (i = 0; i <= 20; i++)
cout << I;

I think 20 but am not sure.

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C :: Variable Or Field Declared Void And Other Errors

Mar 29, 2014

I'm creating a payroll program and here is my code

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define REPORTHEADING1 " Employee Pay Hours Gross Tax Net
"
#define REPORTHEADING2 " Name Rate Worked Pay Due Pay
}

[code]....

The errors I get are: variable or field PrintSummaryReport declared void in function voidPrintSummaryReport... cannot convert FILE to const car for argument to int printf(const char*...) which is for the following lines

Code:

printf(reportFile,REPORTLINEFORMAT1,fullName,payrate,regHours,gross,fedtax,
ssitax,netpay);
printf(reportFile,REPORTLINEFORMAT2,ovtHours,statetax,deferred);

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C++ :: Cannot Access Private Member Declared In Class

Aug 22, 2013

I have a method:

int filetodb(std::wstring szwf, SQLHANDLESTR *h);

I want to use it, in a thread.

std says, use thread, as:

std::thread second (bar,0); // spawn new thread that calls bar(0)

How can I do this, for my method, that uses more than one, i.e., two, parameters?

My code is:

std::thread thread = std::thread(filetodb, filesP->at(i), h);

compiler says:

Error10error C2248: 'std::thread::thread' : cannot access private member declared in class 'std::thread'c:program files (x86)microsoft visual studio 11.0vcincludexmemory06061ConsoleApplicationa

How, can I do this?

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C++ :: Unable To Sort Array Declared As Struct

Jan 16, 2014

I am trying to sort an array declared as a struct but it doesn't work. What am i doing wrong?

#include <iostream>
#include <fstream>
using namespace std;
ifstream f("date.in");
ofstream g("date.out");
int n;
struct film

[Code]...

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C++ :: How To Correct Scope Not Declared For NumYears And NumChildren

May 1, 2014

trying to use a void function below. How do I correct scope not declared for numYears and numChildren?

4#include <iostream>
5#include <cmath>
6using namespace std;
7
8// Function prototype

[code]....

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C++ :: Error - Variable Or Field Declared Void

Sep 17, 2014

Why I am getting this error

error: variable or field createBinaryFile declared void

void createBinaryFile(std::fstream&, std::ifstream&);

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C/C++ :: Getting Variable Or Field Declared Void And Other Errors

Mar 28, 2014

I'm creating a payroll program and here is my code

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define REPORTHEADING1 " Employee Pay Hours Gross Tax Net
"
#define REPORTHEADING2 " Name Rate Worked Pay Due Pay

[code]....

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C++ :: Structure Declared With 10 Components - Value Set Previously Deleted

Oct 31, 2013

I have a small questions in the behavior of Structure, I have declare a structure with 10 components. Some of the components in the structure has already their value but when I use

The structure components in a function DLL function those value I set previously has been deleted or empty. I don't know what is the problem...

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C++ :: Accessing Data Declared Private Within Header File?

Feb 10, 2015

I have a header file that declares some fields as private, I then have a class that I need to compare two of the objects' information for equality but neither of them are the calling objects. I cannot alter the header file. How would I go about comparing private data fields? I will enter a brief bit of code for clarity.

Code: // Header File
// stuff.h

class stuff
{
private:
int* arr[20];
int size;
};
bool equal (const stuff& a, const stuff& b);

[code].....

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C++ :: Globally Declared Arrays Accessed By Multiple Functions

Mar 15, 2013

I currently have globally declared arrays, which are accessed by multiple functions. I want to turn the program so that the arrays are no longer globally declared, but are passed to functions by reference.

I have one problem with passing the arrays: I found that, through debugging, I HAVE TO resize the array when I pass it by reference. For instance, I was using int a[10] when it was globally declared, when it is passed by reference with size 10, it does not work, instead it should be higher than 10 (certain number). Why is this happening? I do not get it...

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