I am trying to make a double array, but I keep getting an error Segmentation fault (core dumped) when I make more than 105 elements in the array. I need to make 114 elements.
I am building my array with myarray[999] and increasing the number doesn't seem to do anything.
How can I store more elements in my array?
I'm trying to implement a linked list using my own node class. I've created functions to add to the head and tail, return the size of the linked list as well as the value stored within the current pointer.
However, my problem is that when I wrote a test program to see whether my list worked, my list did not appear to increase in size past 1 item in the list.
this is the test program I wrote:
int main() {
int counter,
data;
linkedlist *my_list = new linkedlist();
cout << my_list->size() << endl;
for (counter = 0; counter < 5; counter++) {
[Code] ....
I'm sure it's probably something simple that I've overlooked . But I'm still relatively new to the concept of dynamic memory allocation.
Im working on a small code and am trying to limit the size of the mysql databse string its pulling.
It can only be 119 characters, or less if its more i would like to do nothing, but if its meets the requirements it runs the script.
Code:
int32 message_id;
string_t message ="Is requesting some one to respond.";<_______________TEMP SHOULD BE THE POSTERS MESSAGE
string_t username = "Guest";<_______________TEMP SHOULD BE THE POSTERS NAME
// char will not be logged in so get the id manually
[Code] ....
So here is where I'm heaving the problem
if(message is less then 119 characters run script )<<___________THIS IS THE CODE LINE IM TRYING TO LEARN
{
char buf[110];
sprintf(buf,"[Web Chat] %s %s",username.c_str(), message.c_str());
[code].....
how do I tell the if statement to output this error message 'exceeded the maximum amount of characters' that has its characters stored in an array using c-style string?
[INPUT] The cat caught the mouse!
[OUTPUT] Exceeded the maximum amount of characters (max 10)
#include<iostream>
#include<string>
[Code]....
class Album{
private:
char albumName[100];
Song* List;
int numSongs;
public:
Album(char*);
~Album();
[Code] ....
And everytime I create the class it can have only one song because I set numSongs to zero.
I am new to programming all together but i have been writing a program in c++ and im coming up against an issue with my array.
#include<iostream>
#include<iomanip>
#include<string>
using namespace
int main () {
int a ;
int b ;
char answer ('Y') ;
[Code] ....
I am trying to get the program to increase say year one by 1 when the condition is met i have tried
if ( a >= 70 && a <= 100 && b == 1)
{grade [0][0] = 0 + 1;}
and
for (grade[0][0] = 0 ; a >= 70 && a <= 100 && b == 1 ; grade [0][0]++)
{grade [0][0]= 0 + 1 ;}
Now all that i want is that the array will take the information from int a and int b and then add 1 to the appropriate part of the array . I have tried putting it in deferent places but its not working for ether. the program will run but it will not add to the array.
how to accommodate double-size:8 bytes in 4 bytes pointer in 32bit system.
View 1 Replies View RelatedIm having trouble on getting the quantity up of the variable "item.iqty". For example the current quantity is 5 and in this function, the user inputs a number and it should add to the variable "item.iqty". So if if the user inputs 2 then the current quantity should be 7 now but in my program it hasnt changed. its still 5
void addQty(FILE *fp)
{
int num, qty, r, c, n;
bool found;
[Code]....
Code:
#include <iostream>
using namespace std;
int j;
int n;
int recursive ( int arr[j] );
int main() {
int i;
int arr[10000];
[code]....
This is how I tried making the program..
I want it with a recursive function
I want if the sequence is non decreasing return true else return false
We have socket server which is developed in c# .net 3.5.
I see server memory keep on increasing whenver client disconnectes and connects.The server disconnects client if client didn;t send valid credentials.
When client is trying to connect with invalid credentials the memory is keep on increasing.
Here is the code that handles disconnection.
try {
if (state.workSocket != null) {
log.DebugFormat("ssl socket displose,{0},{1}", Doomed, IP);
state.workSocket.Shutdown(SocketShutdown.Both);
state.workSocket.Close(1);
state.workSocket = null;
log.DebugFormat("ssl socket displose complete,{0},{1}", Doomed, IP);
[Code] ....
I am programming about some numerical problems. I know that vector supplies vector operations. But vector always allocate more memory (used when the size changes). My matrix or array never change size, and the vector operation is just +,-,dot,cross,distance
My question is that should I use vector, or simple double array with new & delete is enough for me?
The assignment is to create a program that lets users reserve a spot on a plane either in coach or first class. I'm supposed to create a .txt file to use as the prices for different seats and while I have done that, I'm having trouble getting the file into a double array.
This is what I have so far.
//This program lets the user reserve airline tickets on a plane
#include <iostream>
#include <cstring>
#include <fstream>
using namespace std;
[Code]....
Once I have the file into a double array, I have to use that array to implement it into the seat prices. Such as if user chooses to sit in row 1 seat 1 it would be that price. Also the '#' means open seat and '*' means seat taken. O yea, under the "//Populating the double array" is me trying to see if a for statement or a nested for statement would work.
All I have so far is a rectangle that prints 5 stars in length and 20 lines in length. What I want to do now is have each new line print an extra space more than the line before it and then print 5 stars.. This is what I have so far:
Code:
#include <stdio.h>
int main (void){
int i;
for(i=1; i<=20; i++){
printf("*****
");
[code]....
Any examples of a c++ program that uses recursion to find the longest increasing sequence from a grid in a file. Like
2 4 6 8
10 12 14 16
18 20 22 24
I have to use a structure named Point and a structure named Sequence.
const int MAXROWS = 4;
const int MAXCOLS = 4;
const int MAXFILENAME = 255;
// Structure used to define a point (x,y) in the grid.
typedef struct {
int x, y;
[Code] .....
How to convert char array into double?,i.e. store char array values into a single double variable. Below is the code that i'm working. Im extracting the value "2255.1682" from char array gpsdata1. I used while loop, extracted the value and stored in "myChar", but i want to store it in double variable "lat1".
Code:
#include <stdio.h>
#include <stdlib.h>
int main(){
unsigned char gpsdata1[]="$GPGGA,091310.000,2255.1682,N,11356.3605,E,1,4,1.62,164";
char myChar;
double lat1;
[Code] .....
How to initialize double pointer array..?
int (**aLines)[2];
I am having a lot of trouble extracting values from a string into a double array.
I have a string that looks something like this: "asdf 1.320 1 234.43 5.00000 3"
All I want to do is extract the doubles and store them in an array of doubles.
i wanted to sort an array with double bubble sort but it didnt work!
my code is this:
void doubleBubbleSort(int *array, int length) {
int i,j;
for(i=0; i<length--;i++) {
if(array[i]>array[i++])
for(j=i;j>=0&&(array[j]>array[j++]);j--)
std::swap(i,j);
[code].....
how to get time like 1.56 seconds,too!
I wanna create mesh Array using boost elements, that will be do the same that code below, but can accept numbers of double. Any boost array that give me needed functionality. It will be great that advised element has the same argument list. I mean
// [base,stride,bound)
// [0,2,4)
Or may be there are any opportunity modify this boost::multi_array_types::index_range in order do make it accept double...
1>------ Build started: Project: HP_A.1_d_, Configuration: Debug Win32 ------
1> Main.cpp
1>c:all myс++ha level 9solutionlevel 9hp_a.1_d_main.cpp(15): warning C4244: 'argument' : conversion from 'double' to '__w64 int', possible loss of data
1>c:all myс++ha level 9solutionlevel 9hp_a.1_d_main.cpp(15): warning C4244: 'argument' : conversion from 'double' to '__w64 int', possible loss of data
1>c:all myс++ha level 9solutionlevel 9hp_a.1_d_main.cpp(18): warning C4244: 'argument' : conversion from 'double' to 'unsigned int', possible loss of data
1>c:all myс++ha level 9solutionlevel 9hp_a.1_d_main.cpp(20): warning C4244: 'argument' : conversion from 'double' to 'unsigned int', possible loss of data
1>c:all myс++ha level 9solutionlevel 9hp_a.1_d_main.cpp(20): warning C4244: 'argument' : conversion from 'double' to 'unsigned int', possible loss of data
1> HP_A.1_d_.vcxproj -> C:all myс++HA level 9SolutionLevel 9DebugHP_A.1_d_.exe
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
Code:
#include <boostmulti_array.hpp>
#include <iostream>
typedef boost::multi_array_types::index_range range;
[Code]....
I'm trying to understand why a conversion from a byte array (unsigned char) to a double works when done one way and not antoher.
In the example code I test by hard coding an unsigned char array of the same bytes that the double consists of.
When I copy the bytes to a long long and cast to double the result is not the original double but if I use a struct the bytes can be set and the conversion happens.
Seems to me that both ways should work. I'd just like to know what is going on with the "struct way" that makes the conversion correct. I see in debugger that the bytes in memory are the same for piAsLong and u.bytes.
My compiler is VS 2012 and a long long and double are both 8 bytes (tested with sizeof). This is learning activity only.
Code:
#include "stdafx.h"
#include <iostream>
#include <iomanip>
using namespace std;
union {
double d;
[code]....
Write a program using user-defined function which accepts an integer array and its size as arguments and assign the elements into a two dimensional array of integers in the following format: If the array is 1,2,3,4,5,6, the resultant 2D array is
1 2 3 4 5 6
1 2 3 4 5 0
1 2 3 4 0 0
1 2 3 0 0 0
1 2 0 0 0 0
1 0 0 0 0 0
So I have a double array, where I'm inputting float numbers to certain points in an array. Sometimes, the numbers that are printed out are completely different from what I put in.Here is the part of the code:
Code: .
while( token != NULL ) {
num = atof(token);
test[j][i] = num;
printf( "
%s, i is %d, j is %d
", token,i,j );
printf( "number is %f
value test of i,j is %f
[code]....
Why the float num prints out fine, but when put into an array becomes garbage?I'm taking string values from a csv file and turning them into floats, but no problems seem to crop up there.I reset i when appropriate and increment j when needed, so I don't think my problems are from incorrect array values (though they might be)
Can you use data type double or float for an array? ie
double n[];
or
float a;
float m[a];
My code wont accept me changing the data type..will on accept int data type. I get the following error when I try to change the array to double or float..
3310E:C++vector.cpp[Error] invalid types 'double [1000][double]' for array subscript
I'm wondering if it is possible to pass a 2d array to a function where the size of the array is not known at runtime.
I've tried
function ( array[][6] ) ;
But the size of the array has to be constant so it cannot be declared later.
I've tried using a template but you still have to declare the size of the array at runtime. Is this even possible at all?
The only other way I can think of is using a dynamic 2d array but how to create one and manipulate it.
ok here is the question: Write a function that will initialize a double data array element to 0.0 ?
View 4 Replies View RelatedI am studying/writing/ code for a future Advanced Data Structure class in C++; however I am not suppose to use STL, Templates and etc (the way I just code "kinda" of resembles what I have to use).
My application is suppose to read/analyze all integers contained in a text file of 5-digit integers (10000 - 99999).
For simplicity I am using the following input (or check the attached):
20007 20008 20009
20010 20010
20012 20012
20013
20014 20010
20015
20016 ....
So far, my code is not displaying/printing the lists separated by the first digit of these 5-digits integers. I am expecting it to display/print logically/similar to the following:
Output:
Results for input file numbers.txt:
27 total integers read from file
The 3 unique integers beginning with digit 1 were
18399 17342 19948
The 6 unique integers beginning with digit 3 were
39485 34710 31298 38221 35893 32791
The 4 unique integers beginning with digit 4 were
43928 49238 45678 43210
The 6 unique integers beginning with digit 6 were
64545 62987 66221 61777 66666 65432
The 2 unique integers beginning with digit 8 were
88888 86861
The 1 unique integer beginning with digit 9 was
98765
There were 22 unique 5-digit integers in the file.
The highest unique count in one list was 6 integers.
My code that will follow soon displays/prints only the LAST 5-digits "group" of integers (in this case the 5-digits starting with 3). I am not sure what's wrong with my code; perhaps I am not designing it correctly. May be my calls in it are on the wrong place or I have to write all integers and then traverse it and output it (if that's the case, I am not sure how).
My code follows:
#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
const int MAX_CELLS = 10;
const int UNIQUE_FIVE_DIGIT = 5;
[Code] .....
