C++ :: Variable Mean Is Being Used Without Being Initialized

Jan 27, 2013

#include<iostream>
#include<iomanip>
#include<fstream>
#include<string>
#include<cmath>
using namespace std;
int studentdetails_mean();
double standard_deviation();

[Code] .....

its showing Run-Time Check Failure #3 - The variable 'mean' is being used without being initialized.

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C :: Variable F Is Being Used Without Being Initialized

May 6, 2013

I have declared and initialized where needed but keep getting a Debug Error: Variable F is being used without being initialized.

Code:

#include "stdafx.h"
#include<stdio.h>
void Signboard (void)
{
/* This function prints the Signboard onto the output page */
int n;
}

[code]....

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C++ :: Variable P Being Used Without Being Initialized

Jan 16, 2014

There is error that said run time check failure 3 the variable p is being used without being initialized

typedef struct portion{
char type[8]; float pctg;
struct portion *next;
}Portion;

typedef struct student{
char ID[9]; float cmark;
Portion *head;

[Code] .....

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C++ :: Variable (Width) Is Being Used Without Initialized

Mar 14, 2013

It said my width1 is being used wihtout being initialized.. what does it mean?

#include<iostream>
using namespace std;

double Area(double height, double width);
double Perimeter(double height, double width, double height1, double width1);

[Code] .....

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C++ :: Function Argument - Variable Is Being Used Without Initialized

Jan 27, 2015

I get an error when i try to compile this code. I tried to allocate memory in main function and that works. But why it doesn't work in function? I think that there is something wrong with function argument, but not sure.

Code:

#include <iostream>
#include <fstream>
using namespace std;
struct Word

[Code].....

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C++ :: How Many Times Is A Const Variable Initialized

Jan 12, 2012

I hope I got all the jargon correct. I have something like this:

Code:

const Fl_Color my_fl_dark_gray=fl_color_cube(64*(FL_NUM_RED-1)/255, 64*(FL_NUM_GREEN-1)/255, 64*(FL_NUM_BLUE-1)/255);

in a header file and the header file is included in several C files.

Questions:

At run time,

Is there just one copy of the const variable my_fl_dark_gray or are there multiple copies for the multiple C files?If a function uses the const variable, does the initialization statement "my_fl_dark_gray=fl_color_cube(...);" run every time the function is called or does it just run once and then when the function is called it just uses the value stored in memory?

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C :: Calculate Area Of Rectangle - Variable R Is Being Used Without Being Initialized

Mar 15, 2014

I am writing a program to calculate a rectangle's area.

Eg.
Enter top left point: 1 1 (User input)
Enter bottom right point: 2 -1 (User input)
Top Left x = 1.000000 y: 1.000000
Bottom Right x = 2.000000 y: -1.000000
Area = 2.000000 (Program output)

It keeps on prompting me my variable r is being used without being initialized, when I think I already did so.

Code:
typedef struct {
double x;
double y;
} Point;

[Code] ....

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C++ :: Calculate Pay / Money Changer - Variable Being Used Without Being Initialized

Aug 12, 2013

I've created a program meant for submission for my final project but when i ran it, it shows that the variable being used without being initialized for quite a few time. My program is below.

#include<stdio.h>
#include<conio.h>
void Kahui(float dollar, char choice);
void Qixiang(float hours, float rate);
void main(void) {
float dollars;

[Code] ....

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C++ :: Error / Variable-sized Object (largeArray2) May Not Be Initialized

Feb 28, 2013

when i compile my code i get this error : "error : variable-sized object 'largeArray2' may not be initialized"

Code:

float give_coefficients_routh_table_and_fill_two_first_lines(int denominator_degree)
{
float largeArray2[20][20] = {0};
int l = 0;
int c = 0;
int e = denominator_degree ;
for ( e = denominator_degree; e>=0; e--)

[Code] .....

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C :: Multidimensional Arrays - Variable Sized Object Maybe Not Be Initialized?

Oct 30, 2013

I'm trying to get a full understanding of multidimensional arrays. When I try to initialize the array I get an error.

Code:

int Pick2(void) {
int pick = 2;
int limit = 0;

[Code].....

The error I get is "variable-sized object maybe not be initialized" with warnings messages pertaining the that Error message.

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Visual C++ :: Runtime Check Failure - Variable Used Without Being Initialized

Nov 10, 2014

Under visual studio, this is a typical run time error,

Code:
void func(int x){
x = 3;
}
int main() {
int x;
func(x);
}

When x is passed to the function func, it is not initialized. But my question is that why it should be an error? On the other hand, if I change the definition of func a little bit like this,

Code:
void func(int& x) {
*x = 3;
}
int main() {
int x;
func(&x);
}

Now in main, x is still not initialized, but this time there isn't a run time error like "the variable is being used without being initialized. Why?

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C :: Pointer Cannot Be Initialized With A Constant

May 20, 2014

Why pointer cannot be initialized with a constant like.

Code: int *p = 3000;

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C++ :: Program Crashing When Initialized

Oct 13, 2014

I just finished coding a program that is based on polymorphism and inheritance but when I ran the program it crashed? I do not know what is the cause of the program crashing.

#include<iostream>
#include<string>
using namespace std;
class Shape{
float density;

[code].....

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C :: Qsort With Array Initialized Using Malloc?

Mar 2, 2013

I want to be honest, this is FOR homework, but is NOT homework. I have created this example to work from in order to understand qsort further because the next assignment requires it's use.

Our teacher gave us this small piece of example code and I am trying to expand on it to serve my purpose.
[C] Sorting - Pastebin.com

The code gives me no errors, but does not sort the array. Need to clarify the use of qsort in this instance.

I am imagining that the reason it's not sorting properly ( or at all ) is because of my comparison function. That is really just an assumption. Or perhaps I just don't understand the pointer array i'm using.

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C++ :: Elements Of Array Will Be Default Initialized

Sep 1, 2014

I have a `char*` data-member in a class.

I get the following compiler error, the error refers to the char* data member:

error C4351: new behavior: elements of array will be default initialized.

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C/C++ :: Elements Of Array Will Be Default Initialized?

Sep 1, 2014

I have a `char*` data-member in a class.

I get the following compiler error, the error refers to the char* data member:

error C4351: new behavior: elements of array will be default initialized.

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C++ :: How To Copy From A Dynamic Array Initialized In A Class

Apr 3, 2013

How do I copy from a dynamic array initialized in a class but with a different memory address. For example if my array is a dynamic array initialized in a class...

Code:
const int CAPACITY=5;
class Array{
public:
Array();//constructor

[Code] .....

How would i copy this array to a another array but have a different memory address so when i deallocate array a my copy array also isn't deallocated.

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C :: Initialize Array Values With 0s Or Assume They Will Be Initialized To 0

Apr 7, 2014

The following:

Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char *argv[]) {
int i;
int arr[3];

[Code] ....

Notice we didn't set a value for second index but it returns 0. Should I assume that when declaring an array with n values, those values will be initialized to 0 automatically or should I still initialize the array with all 0s doing something like this:

Code:
for(i=0;i<sizeof(arr);i++) {
arr[i]=0;
}

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C++ ::  List Initialized Vector Is Having Error Messages

Jan 16, 2015

vector<int> vec1 {2, 4, 6, 8, 10, 12, 14, 16, 18, 20};

This code worked perfectly fine in Xcode earlier today, but when I got home on visual studio 2012 express it is having an error. It's saying that the local function definitions are illegal and has a red mark under the '{' only?

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C++ :: Write To A Binary File - Int Array Is Not Initialized

Oct 30, 2013

This is what I have so far

My function does not work and my compiler says my int array is not initialized

#include <iostream>
#include <cctype>
#include <string>
#include <fstream>
#include <stdio.h>
using namespace std;
void arrayToFile(ofstream tak, int *arr[], int size )

[Code] ...

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C++ :: Dealing With Dynamic Arrays - Printing Initialized Objects

Jul 15, 2013

I have a problem in dealing with dynamic arrays. I have initialized the objects and now i want to print them.

Code: // main
char* namesList[] = {"Brad Shaw","Aimen Adams","Sal Dimitry","Cristi Anreaz","Poala James"};
int idList[]={232,444,135,52,134};
Team t1( namesList,idList,5,"waqas");
t1.Print_team(); My class Team looks something like this:

[Code] ....

The print function does not work. I have to implement the print function without taking any parameters.. How should i do that ?

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C++ :: Class Syntax - Variables Are Initialized With Values Between Parentheses?

Mar 1, 2013

Here's a bit of code:

CvClimateInfo::CvClimateInfo() :
m_iDesertPercentChange(0),
m_iJungleLatitude(0),
m_iHillRange(0),
m_iPeakPercent(0),

[Code] ....

does this means that these variables are initialized with the values between parentheses?

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C++ :: Create Array Of Eight Circle Objects Initialized With Radii

Nov 6, 2013

Im supposed to create an array of eight Circle objects initialized with the radii which is in the program. Also I must use bubble sort to arrange the objects is ascending order.

ERRORS:
'initializing' : cannot convert from 'double' to 'Circle'
'setRadius' : is not a member of 'Circle'
see declaration of 'Circle'
'findArea' : is not a member of 'Circle'
see declaration of 'Circle

#include "stdafx.h"
#include <iostream>
#include <iomanip>
using namespace std;
class Circle {

[Code] ....

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C++ :: Type Conversion - Float Or Double Variable Into Unsigned Char Variable And Back

May 10, 2013

I would like to convert a float or double variable into unsigned char variable and back.

float number_float = 23.453f;
unsigned char* number_char = (unsigned char*)malloc(sizeof(float));
number_char = reinterpret_cast<unsigned char*> (&number_float);
float* number_float_0 = reinterpret_cast<float*>(&number_char);

I am not getting the same value back.. why?

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C++ :: Store A Reference Variable As Member Variable Of Interface Object

May 1, 2013

I am having trouble compiling my interface. I am trying to store a reference variable as a member variable of the interface object. Compiler says that the variable has not be initiated correctly.

LCD inherits from VisualInterface which is expecting a DisplayDriver object to be passed in (DisplayDriver is another interface, but thats not important).

I pass the displayDriver object in when LCD is instantiated in maininterfaces.zip

I was pasing it before as a pointer but was told that this could cause me problems with memory leaks and a reference was better, but now I cant seem to get it to compile.

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C++ :: Storing Variable Size Pointers Array As Class Variable

Mar 2, 2013

This problem is best explained by looking at its output below. I stored 15 different values but when retrieved some are wrong.

#include <iostream>
using namespace std;
class A {
public:
int ** pointer;

[Code] ....

I need to store and retrieve the 15 different values correctly. How to solve this? The main thing is, I need to store the pointer in class A objects.

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