I need to keep a data structure, which has an id, an object pointer and a position. this id is used to randomize things, the object and the position is attached to this id. So which way is better?
Code:
struct data {
int id;
ObjectBase* obj;
Vector3 position;
};
vector<data> vecData;
or
map<int, pair<ObjectBase *, Vector3>> mapData;
What I have to do is write a small program in C++ to parse the symbols that are used on 5 different lines of text in each position until position 30 is reached on each line. The goal of the parsing program is to interpret the symbols (characters), if there are any per each position, on the 5 lines of text in order to output the actual data that the group of symbols represents.
My question for is this: Is there anything special from a C++ environment that should go in to something like this outside of using standard stuff like the math associated with the search algorithm that has to happen here? The symbols are located in a file, so I know I have to include "iostream" and a few other headers. But outside of header inclusions and the code necessary to iterate and streamline the search and interpretation process, am I missing anything special that I couldn't otherwise find through simple google searches?
I have an issue with a switch case in my program. I execute it and it does fine all the way up to where it says, "Answer (1, 2, or 3): ". When I enter 1, 2, or 3, it gives me' "Not an input choice!" from the default of the switch case.
NOTE: I use Code::Blocks on Windows XP.
Here is the code:
Code:
#include <stdio.h>
#include <string.h>
int main() {
[Code].....
I have an assignment for uni which requires the program to ask the user to input a number in for a variable to use in later equations. The assignment specifies that if the number that is input into the program is not an interger that it needs to be rounded UP to the nearest interger. e.g. 2.5 = 3, 5.00001 = 6 etc. i have identified this variable using "int" which i know makes it an interger however it also always rounds the number DOWN to the nearest interger. I was just wondering what the best way to approach this problem was. The only idea i have is to put + 0.99999 at the end of this variable when it is worked out so that if it is not a whole number it will be raised above the next interger and then rounded down however this will not work if there is too many decimal places.
View 6 Replies View RelatedI am working on a couple C++ projectsfor my class. On one of my projects I get this error "identifier not found" for maximumValue. here is the code that I have done. I have got almost all the code from my text book..
// Three numbers.cpp : Defines the entry point for the console application.//
#include "stdafx.h"
#include <iostream>
using namespace std;
int main() {
// demonstrate maximum int value
int int1, int2, int3;
[Code] .....
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] .....
here is my code, the issue is its not determine if the value is a palindrome or not.
// unit 5b.cpp : Defines the entry point for the console application.
//
// How to read a file
// identify the string if its a palindrome or not
//
#include "stdafx.h"
#include <iostream>
#include <cctype>
#include <fstream>
[Code] .....
what is the meaning of identifier before function call in this example? i mean that in syntax context
// Create a stack-allocated handle scope.
HandleScope handle_scope(isolate);
I keep getting this error message when i try to build the program.
#include <stdio.h>
#include <stdlib.h>
int main () {
int opt;
do {
printf("Please choose an option:
");
printf("1. Calculate resistance value
[code]....
The error messages that i am getting are :
error: expected expression (line20)
error: use of undeclared identifier 'colours' (line 47)
I'm writing a program to read in a Master.txt file and then update it through a Transaction.txt file that contains various transaction types [Adds (A), Deletes (D), and Edits (E1-E4)]. The records in both files are in ascending order based on Item#. Ultimately, the original Master.txt and updated Master file (Master2.txt) will be merged to reflect all valid transactions, and an errorLog.txt file will be created to indicate all invalid transactions. I feel I have all of the code written correctly, but I am still getting errors on my operands and identifiers.
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
struct invRecord {
string delDate;
[Code] ....
Why "Team" and "NUM_MEMBERS" are undeclared identifiers? I'm not sure I understand why it's giving me errors for those.
//Function Prototypes
void initialize (vector <Team> & tV, const int ID [],
const string m[][NUM_MEMBERS], int arraySize);
void printList (const vector <Team> & tV);
void menu ();
void add (vector <Team> &tV);
int search (const vector <Team> &tV, unsigned int size, int ID);
I'm trying to perform a simple input operation, and check to make sure that whatever the user input is a valid input (is within data type bounds, is correct data type...). But when I get to ignoring the input, I keep getting an error.
unsigned short num;
while (true) {
std::cin >> num;
if (std::cin.fail()) {
num = 1;
[Code] ....
I don't fully understand why this error is here.
I have got this error: I get the error: Identifier 'deposit' cannot have a type qualifier
I have defined this class
class BankAccount {
private:
double balance;
double interest;
int custNr;
[Code] ....
When I compile the program I get the error: Identifier 'deposit' cannot have a type qualifier ....
Would there be anyway for the compiler, or the language, to provide a unique ID during compilation?
I've been using UUID generators, but I've always found the approach of copy pasting from a program to code to be kind of... limiting. If I want a random number, can't the compiler guarantee this for me?
It already does the same thing for anonymous namespaces, so...
I've assigned value to variables x and y via cin, but when I try to compile it, I'm getting:
"1>c:users
isedocumentsvisual studio 2010projects ryityourself ryityourself ryityourself.cpp(26): error C2065: 'x' : undeclared identifier
1>c:users
[Code] .....
Code:
#include "stdafx.h"
#include <iostream>
void enterfirst() {
using namespace std;
int x;
[Code] .....
I have some code does not compile. I think it's missing an included library, but not sure.
In the int main() block of code, the following three items give errors:
1. Mtrx (the one following "new") - Error: expected a type specifier
2. result - Error: expected a ";"
3. &result - identifier "result" is undefined
Below is the code with the head to show you what has been included:
HTML Code:
#include <iostream>
#include <iomanip>
using namespace std;
#include <limits.h>
// create the structure of the matrix
struct Mtrx {
int numRows;
int numCols;
float array[101][101];
[code]....
I'm trying to create a template binary search tree and I'm getting all these vague errors that I have no clue how to solve. I've narrowed it down to my findMax and findMin functions but i can't figure it out any further than that.
template<class T>
class BinarySearchTree{
private:
struct BinaryNode{
T data;
BinaryNode *left;
BinaryNode *right;
[Code] .....
and here is are the errors I'm getting from this header file.
1>------ Build started: Project: Programming Assignment 2, Configuration: Debug Win32 ------
1> main.cpp
: error C2143: syntax error : missing ';' before '*'
: error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
: error C2065: 'T' : undeclared identifier
[Code] ....
I receive this error, been couple hours try to understand, but i havent find the solution.
i get the error here:
case 2:
currentBalance(balance);
main ();
is it because it doesnt have a value, i serious dont know what my problem.
My whole code.
// Lucky ATM.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <iostream>
[code]....
Each of my header includes is protected by directives. I think I don't have to include Boolean in my work space because it is already included in the external dependencies section. and the Boolean.h is in the include path.
MachineShop, Boolean etc got undeclared identifier error
Tried to comment out the directives, to no avail.
Code:
#include <iostream>
#include <string.h>
#ifndef BOOLEAN_H_
# include "Boolean.h"
#endif
#ifndef PROCESS_H_
# include "Process.h"
#endif
#ifndef MACHINESHOP_H_
[Code] ....
Write a program that will calculate average of 3 numbers
#include <iostream>
int
main(){
// prototypes:
float add_and_div(float, float,
float);
[Code] .....
i get the following errors:
error C2065: 'cout' : undeclared identifier
error C2065: 'cin' : undeclared identifier
error C2065: 'cout' : undeclared identifier
error C2065: 'endl' : undeclared identifier
I am having this error where it declares two of the same identifier, but I cannot figure it out.
Error C237 states:
The identifier is already declared.
Example
// C2371.cpp
int main() {
int i;
float i; // C2371, redefinition
float f; // OK
}
Though in my code I cannot find a redefinition anywhere.
texturemanager.h
#ifndef TEXTUREMANAGER_H
#define TEXTUREMANAGER_H
#include <SDL.h>
#include <SDL_image.h>
#include <iostream>
#include <string>
[Code] ....
My complete Error states as this:
Error3error C2371: 'TextureManager::load' : redefinition; different basic type line:4
Error2error C2556: 'TextureManager TextureManager::load(std::string,int,int,int,int,SDL_Renderer
*,SDL_RendererFlip)' : overloaded function differs only by return type from 'bool TextureManager::load(std::string,int,int,int,int,SDL_Renderer *,SDL_RendererFlip)' line: 4
Error1error C2628: 'TextureManager' followed by 'bool' is illegal (did you forget a ';'?) line:3
IDE: Visual Studio 2012
I dynamically allocate a new list in the recMergeSort function which should run a constructor but when it get to the functions that use it, I get error C2065: 'otherHead' : undeclared identifier. I have tried setting it to NULL and it didn't work. I even copied the default constructor to a set function and I still get the errors.
Code:
template<class Type>
void unorderedLinkedList<Type>::recMergeSort(nodeType<Type>* &head) {
otherHead = new nodeType<Type>;
if (head !=NULL)
if (head->link != NULL)
[Code] ....
wonder if I'm sending the correct data type. Here is the heading of the functions that I'm using from the book.
Code:
void unorderedLinkedList<Type>::divideList(nodeType<Type>* first1,
nodeType<Type>* first2)
Error message is identifier expected and declaration terminated incorrectly.
//to define a class Employee
#include<iostream.h>
#include<stdio.h>
#include<string.h>
#include<conio.h>
class cEmp {
[code]....
will copy constructor does object initialization using another already created object? I understand that it can be applied for object initialization and not for assignment.Is it correct?
View 10 Replies View RelatedI have a method to take a Tile object and make an instances of it based on some data from the original object. Than it is suppose to manipulate the a specific instance and save the results. The first loop through it works but it changes all instance as well as the base.
public static int recurse(int count, Tile[,] b,Huristic h,int check) {
if (check==1) {
boardState.Add(B)/>;
return check;
} if (check == 0)
[Code] .....
#include "B.h"
class A {
public :
A()
{
s_b = new B();
b = new B();
[Code] ....
In my project i have seen static object as above . But not able to know what is the exact use of it and how they are different from general object .
