I am trying to inherit from class but the same error is appearing
Code:
1>c:userskthdu_000documentsvisual studio 2010projects
ectangle
ectangle1crectangle.h(1): error C2011: 'Crectangle' : 'class' type redefinition the following is my classes
crectangle.h
Code:
class Crectangle{
[Code] ....
If Yes, then why this syntax does not works :
class Derived : public Base {
public:
Derived& operator=(const Derived &rhs) {
operator =(static_cast<const Base&>(rhs));
[Code] ....
Error C202 appearing while converting .c to .hex?
Error showing for RL=0.
#include <stdio.h>
#include "89c51.h"
#include "Delay.h"
#include "LCD.h"
#include "Serial.h"
#define Buzzer P3_7
#define VTP2_4
#define RFCmdPortP2&0x0f
[Code] .....
Error showing for RL=0 i.e line no.26.
Attached image(s)
Code:
class CUser {
public:
CUser();
~CUser();
protected:
std::string firt_name;
std::string last_name;
[Code] .....
How would I go about shrink the duplicate data set from CWorksheetTwo? For CWorksheetTwo has both CUser and CUserEx, and I only need CUserEx, and all other classes are happy with CUser
Since there is no such thing virtual variable what are my choices? In CWorksheetTwo set users to NULL and use another exclusively? Change CSettings variable to template <class T> std::vector<T>users?
I just read and have known for a while that classes are private (members and inheritance) by default and structs are public. But my question then comes what if.. a struct inheriting from a class or a class inheriting from a struct?
View 3 Replies View RelatedUsing c++11, but I don't think that matters here.
output.displayHeader() must execute before the inherited from ostream (cout) executes streaming data, or bad things happen. It's of course not as simple as in the example below, and I need to make sure displayHeader() is never missed.
I'm thinking I need to override the "<<" operator, having my own function call displayHeader(), then call the base (cout) "<<" operator. What's the proper syntax for doing this?
I can't call displayHeader() in the constructor, and I can't call it right after the object is defined. There are exception case scenarios where displayHeader() must not be called, and other things must happen instead.
I'm aware this will result in many redundant bool comparisons versus the way I'm doing it now, and I'm perfectly OK with that.
Code:
#include <iostream>
using namespace std;
class myOutput : public ostream {
public:
myOutput() : ostream(cout.rdbuf()) {
[Code] ....
I have an issue with my codes as according to what I created the fitness level have to appear right after I enter the time take to 3 miles. However it only appears once after repeating five times.
My codes
#include <iostream>
#include <iomanip>
#include <string>
[Code]....
#include "Header.h"
#include <iostream>
#include <string>
#include <iomanip>
#include <cmath>
using namespace std;
int option = 0;
char add;
[Code] ....
Why my LoopUdEdit always display before form load, I place it in constructor. Here is my function:
public void setDataToLookUpEdit(LookUpEdit sLookUpEdit,
string sSQL, string sDisplayMember, string sValueMamber, string sCaption) {
DataTable dt = fillDataTable(sSQL);
sLookUpEdit.Properties.Columns.Clear();
[Code] ....
I am new to c++ and have started creating a dummy program to perform a simple task of writing a few strings to the console, which are first generated using random generation. When I execute the code, an extra line for each generated object appears in the console.
int gemNum;
cout << "This program calculates the value and type of gems
";
cout << "Please enter the number of gems: ";
cin >> gemNum;
vector<int> gemVector(gemNum);
vector<int> gemCollection = fillGemCollection(gemNum);
vector<int> gemSort = sortGems(gemCollection);
vector<string> gemResult = finalGemValue(gemNum, gemSort);
for(int i = 0; i<gemResult.size();i++){
string gemString = gemResult[i];
cout << gemString << endl;
}
This program calculates the value and type of gems..Please enter the number of gems: 4
10 hematite
40 carnelian
60 onyx
120 silver pearl
Press "e" and enter to end program
Linker error.
First off the error
Code:
Error1error LNK2019: unresolved external symbol "public: __thiscall ReachTop<class Character>::ReachTop<class Character>(class Character *)" (??0?$ReachTop@VCharacter@@@@QAE@PAVCharacter@@@Z) referenced in function "void __cdecl `dynamic initializer for 'gReachTop''(void)" (??__EgReachTop@@YAXXZ)Main.objDecisionTest
Reach Top class inherits from Goal Class
Goal Class
Code:
#ifndef _GOAL_H
#define _GOAL_H
#include "Action.h"
#include <list>
template <class T>
class Goal
[Code] ....
Code to create
Code:
Character* gCharacter = new Character(1, gWorld);
Goal<Character>* gReachTop = new ReachTop<Character>(gCharacter);
I can provide the character class and its inheritance aswell if you like.
I'm working on a program which creates data and saves it into blocks (different files), then reloads and converts it all. the .ftl file saves properly, but for some unknown reason, it won't let me open it for input after.
Here's the significant code:
#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
stringstream filename;
stringstream newfilename;
string Filename;
[Code] ....
setblock will typically = 3, but for testing purposes is set to 1. this really has me confused. the compiler i'm using is Dev-C++ 5.2.0.1 on xp. i have tried pausing the program after the output file is closed, confirming the file has been created in the proper directory before continuing but still fails the .is_open() check.
I've a problem here...
#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <conio.h>
#include <string>
#include <iomanip>
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
[Code] ....
The program needs to be able to read the middle names within the text file named Info2.txt
Simply adding the Mname or any related value where the other to name values doesn't do anything and only the 1st line appears on the output.
Don Jon111012
Jack Bo Todd151015
Jill Jo Jane161011
Bob Jack Chuck 131513
Da Fu111012
That is the correct way it appears in the text file. Also I know it's commented out, but that just to keep the program from crashing.
current output
Survey Results:
Name Results
Don Jon 33.00
This is the Info1.txt file info by the way.
Ken A202017
Gus B151015
Bill C151512
Jara C151720
Lu E101510
Chow B171015
And the output
Survey Results:
Name Results
Ken A 57.00
Gus B40.00
Bill C42.00
Jara C52.00
Lu E35.00
Chow B 42.00
Which when ran with Info1 selected, it is the correct output I'm looking for. I've tried getline and other solutions and they didn't work.
I am getting the error on the implementation of my class name. The error is coming from my parkingControl.cpp 'ParkingControl parkingControlMenu;'. I have used this implementation fine before, but once I added a new main it stopped working. Below is my code.
parkingControl.h
#ifndef PARKINGCONTROL_H_INCLUDED
#define PARKINGCONTROL_H_INCLUDED
#include <iostream>
[Code]....
I have two classes declared as below
#include<iostream>
using namespace std;
Class Node
{
[Code].....
How to assign the array in object Q to the 12 months, Dec through Jan. I then have to sort the array and display the strings from Jan to Dec.
// main.cpp
#include <iostream>
#include <string>
#include <cstring>
#include <ctime>
#include <algorithm>
using namespace std;
// Declare template class
template <class T, int n>
[Code] ....
I'm trying to get the command pattern for template classes down. I'm just having a hard time implementing one part of the code. I can't figure out why both the method being passed and the type accepted are not the same type.
SimpleCommand class
template <class Receiver>
class SimpleCommand : public Command {
public:
typedef void(Receiver::*Action)();
SimpleCommand(Receiver *r, Action a) :
[code].....
And their instantiation
MyClass *receiver = new MyClass;
Command *aCommand =
new SimpleCommand<MyClass>(receiver, &MyClass::Action);
aCommand->Execute();
I'm trying to learn recursion, and I'm using a simple array to experiment with it, but I have a couple of annoying errors that I don't understand why they're there. Here's the code:
Code:
#include <cstdlib>
#include <iostream>
using namespace std;
int largest(const int arr[], int lowerIndex, int upperIndex) {
int max;
[code]....
Now try to print the array backwards:
//Use a recursive algorithm to find the largest element in arr:
int largest(arr[], lowerIndex, upperIndex);//error: expected an expression
return 0;
}
Full disclosure: this is an exercise from "Sams Teach Yourself C++ in 24 Hours" by Jesse Liberty and Rogers Candenhead. This refers to Chapter 9 (Hour 9 Activity 1)
I created a class called Point, in Point.h
I created a class called Rectangle in Rectangle.h and Rectangle.cpp
If I create an int main() function in Rectangle.cpp (that includes Rectangle.h), I can compile Rectangle.cpp and run the resulting program. Fine.
Question:
I create a separate file called main.cpp. I include Rectangle.h. But now the compiler complains.
Code:
$ g++ main.cpp -o main
/tmp/cc38JIph.o: In function `main':
main.cpp:(.text+0x26): undefined reference to `Rectangle::Rectangle(int, int, int, int)'
main.cpp:(.text+0x32): undefined reference to `Rectangle::getArea() const'
collect2: ld returned 1 exit status If I can create a class in Point.h and use it in Rectangle.h, why can I not just use Rectangle in main.cpp?
And the files, of course:
file: main.cpp
Code:
#include <iostream>
#include "Rectangle.h"
using std::cout;
using std::endl;
[Code] .....
My program works before i declare a new variable in class. Right after i declared a new int variable called prevans in my guess class, my program crashes when it runs.
Here's my code: Code: #include <iostream>
#include <time.h>
#include <cstring>
#include <cstdlib>
#include <vector>
[Code].....
I got an array class, but I'm getting this error:
Error1error C2953: 'Array2D' : class template has already been defined
Here's the code:
#include "Tools.h"
template <typename T>
class Array2D {
T** arr;
int xSize;
int ySize;
[Code] .....
I have a class Calendar which has an attribute of priority queue, that accepts records of structure defined as:
typedef void (Calendar::*eventPointer)();
struct activationRecord {
double Time;
int Priority;
eventPointer activationEvent;
};
And here is the problem. Whole day I've been trying to fill the Calendar with some test entries by calling the method
void Calendar::calendarPush(double Time, int Priority, eventPointer event)
This is how I call it
calendar.calendarPush(Time, Priority, &Calendar::calendarEmpty);
But Visual Studio keeps to warn me with this error
argument of type "bool (Calendar::*)()" is incompatible with parameter of type "eventPointer *"
#include <iostream>
#include "Calendar.h"
using namespace std;
int main() {
cout << "Initializing ..." << endl;
double Time = 0.0;
int Priority = 0;
[Code] ....
So I get errors like:
Error1error C2440: 'initializing' : cannot convert from 'const char [4]' to 'Course'
Error2error C2440: 'initializing' : cannot convert from 'int' to 'Course'158
Error3error C2440: 'initializing' : cannot convert from 'const char [6]' to 'Course'158
Error4error C2078: too many initializers158
# include <iostream>
# include <cstring>
#include <iomanip>
#include <cmath>
using namespace std;
class Course {
public:
char CourseName[10]; // Array of size 10, 9 characters and 1 null terminator
[Code] .....
And in the /// part I also need to use the dot operator and the arrow operator to print on the screen info about the second and third Courses.
Having issues with program to create a shape area calculator with circle square and rectangle. the uml goes as follows:
Where the UML has shape as the abstract class with public area():double, getName():string,and getDimensions:string, rectangle derived from shape with protected height, and width, and a public rectangle(h:double, w:double), followed by a derived square from rectangle with just a public square(h:double), and finally a circle derived from shape with a private radius, and a public circle(r:double).
[URL]
Have linked my program and it is giving me the following compiler errors:
error: 'qdebug' was not declared in this scope line 15 of main
error: cannot declare variable 'shp' to be of abstract type 'shape' line 22 of main
error: expected primary-expression before ')' token lines 29 -31 of main
(note previously had qstring as a header file yet changed to string since I was getting error qstring was not declared in this scope.)
I have a class like this:
#include <string>
using namespace std;
//-----------------------------------------------
class Prenumeratorius {
private:
string pavarde;
string adresas;
string leidinioKodas;
[code]....
bunch of variables, constructor, setter and getter.And I have this class:
#include <vector>
class Leidinys {
private:
string kodas;
string pavadinimas;
double vienetoKaina;
[code]....
in to my "Leidinys.h" header file, I get a build error, I tried to remove same includes in both files, that didn't worked.
how to remove the linker error as mentioned above..
i have created a simple program in C++ as given below
#include<iostream.h>
#include<conio.h>
void add(int a,int b);
[Code]....
i saved it with name PIYUSHAN.cpp.after compiling above program, it shows no errors, that means it get compiled successfully. but when I try to run this program it shows Linker error :
Undefined symbol add(int,int) in module PIYUSHAN.CPP
Linker error : Undefined symbol sub(int,int) in module PIYUSHAN.CPP
Linker error : Undefined symbol mul(int,int) in module PIYUSHAN.CPP
Linker error : Undefined symbol div(int,int) in module PIYUSHAN.CPP