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.
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 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 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 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?
I am trying to use multidimensional arrays. I have made a 9 by 3 array and I am trying to use it in my code. Now I am trying to print the content of a particular subscript on user demand but it is giving me some weird error. Everything seems ok to me. Heres my code
#include <stdio.h>
#include<Windows.h>
int main(void) {
double array1[9][3]={{1000.99, 2000.99, 3000.99}, {950.99, 800.99, 700.99},{850.99, 750.99, 600.99},{725.99, 625.99, 525.99},{650.99, 550.99, 450.99},{655.99,555.99,455.99},{350.99, 250.99,200.99},{325.99,225.99,175.99}, {300.99,150.99,100.99}};
[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 ?
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] ....
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] ....
I have used strcmp before on one dimensional arrays but not 2 dimensional arrays.The problem is that I have one 2d array that has text with some misspelled words and I have to compare it to another 2d array and if the word from the first array (misspelled word) is not in the 2nd array then I print it to the screen instead of correcting the spelling. Here is what I have so far:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int read_dic(char [], char [][20]);
int read_words(char [], char [][20]);
void typo_check(char *, char *);
}
[code]...
I'm trying to create Minesweeper and with 2D Multidimensional character Arrays, It doesnt appear like in a grid format i want it to.
#include<iostream>
#include<conio.h>
#include<string>
#include<cstdlib>
#include<ctime>
[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?
Write a program to enter data into a table and display on the screen in tabular form. I want to know where are the errors.
#include<iostream>
using namespace std;
int main() {
int table[3][4];
int r,c,i;
r=c=0;
while(r<=2)
[Code] .....
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.
Whenever the code reaches:
matrix[atoi(tmp[1].c_str())][atoi(tmp[2].c_str())] = strtod(tmp[3].c_str(), NULL);
The app just blocks. Could it be due to a lack of RAM (since its inside a massive loop and I'm currently using an old-ass pc with 1GB RAM) or is it bad programming? If I remove that line everything runs smoothly.
Is there any way in sfml version 2 that I can get objects in a graphics window to retain there relative positions and sizes when the window is resized? I have tried looking in the documentation for version 2 but with no luck.
As an example suppose the window is 800x600 and there is a line running right across the window at 3/4 of the way down (i.e at y=450). If the window is then made larger say 1280x1024 how would I keep the line in the same relative position (i.e all the way across 1280 and 3/4 of the y setting down).
#include <iostream>
#include <string>
using namespace std;
class book {
private:
string bookname;
double bookprice;
public:
book(string k="calculus",double b=25.5)
{ bookname=k;
bookprice=b;
}
I am facing a programming logic problem. I want to draw radius sized lines from centre of circle to the circle boundary.
My code is:
int x1, y1, x2, y2, i, r, old_xc,old_yc, x,y;
int xc, yc;
x1=170;
y1=300;
x2=70;
y2=400;
pDC->Ellipse(x1,y1,x2,y2);
[Code] .....
The lines are touching the circle boudary at only start while the rest of lines are smaller and the shape is a triangle instead of a pie slice.
I'm having to do a little c++ (coming from java) and don't understand the syntax of the following declaration
Code:
SensorBase* const sensor(mSensors[i]);
It looks like it's declaring a const pointer to a SensorBase object but I don't understand how that applies to sensor(mSensors[i]) which looks like a function??
How do you prompt the user to enter the number of elements for the array and use that information to creatr a variable length array? And then how do you prompt the user to enter in a number for each element of the array and scan in the appropriate numbers? the numbers are double precision floating point.
for example,
Enter the numbe of elements in the array: 3
Enter element 0: 3
Enter element 1: -1
Enter element 2: 4
I know it starts with
int main() {
double N;
int a[size];
printf("Enter the number of elements in the array:" );
scanf("%f", &size);
//I'm pretty sure this is wrong
I want to have the random numbers between 1 to 5 for a variable of 5arrays. for having the random numbers i am using the code as below.
Code:
for(int i=1;i<=5;i++)
{ int j=rand()%5;
cout<<j<<endl;
}
The problem with this way of generating random number is that i get the same set of random numbers in every outputs. Is there any other way to have different random numbers with many different outcomes as much as possible.
I am getting a compilation error from the code below. It is when i am naming a variable with my user defined type.
#include<iostream>
#include<cstring>
#include<cstdlib>
using namespace std;
class person {
[Code] .....
C:Dev-CppTRIAL.PASS.!!!.cpp In function `int main()':
66 C:Dev-CppTRIAL.PASS.!!!.cpp expected primary-expression before "p"
66 C:Dev-CppTRIAL.PASS.!!!.cpp expected `;' before "p"
74 C:Dev-CppTRIAL.PASS.!!!.cpp `p' undeclared (first use this function)
(Each undeclared identifier is reported only once for each function it appears in.)
83 C:Dev-CppTRIAL.PASS.!!!.cpp `X' undeclared (first use this function)
i want to store reference to a const object in my class as a member variable, as follow:
I basically want a readonly reference to |Data| in Device object.
Code:
class Device {
Device(const QList<QSharedPointer<Data>> & dataList) : _listRef(dataList) {
} protected:
const QList<QSharedPointer<Data>> & _listRef;
}
This does not allow me to initialize _listRef as something like NULL when it is not applicable.Also, i must change all my constructors and its child class to include an initialization of _listRef!!
What is the alternative? Is pointer the nearest? which of the following should be used?
Code:
const QList<QSharedPointer<Data>> * _listRef;
or
const QList<QSharedPointer<Data>> *const _listRef;
or
const QSharedPointer<QList<QSharedPointer<Data>>> _listRef; ????
