C :: Pointer Cannot Be Initialized With A Constant
May 20, 2014Why pointer cannot be initialized with a constant like.
Code: int *p = 3000;
Why pointer cannot be initialized with a constant like.
Code: int *p = 3000;
what is the advantage of using reference over constant pointer?
Can they be used interchangeably?
Can distinguish between character constant and string constant giving examples
View 1 Replies View RelatedI 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]....
#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.
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] .....
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] .....
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].....
#include <iostream>
class Hello {
public:
void Test() {
[Code].....
As i know a non-constant member function cant be called inside a constant member function but how the above code has been compiled successfully and giving the expected result .
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].....
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.
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.
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.
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?
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.
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] ....
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;
}
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] ....
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?
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] ...
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 ?
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] .....
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.
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?
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] ....
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?