C :: Function That Merge Content Of Two Sorted Arrays Of Double Type Values

Nov 4, 2013

I need to write a function that will merge the content of two sorted arrays of type double values. The function should not assume that both its input parameter arrays are the same length.

Here is my program so far - I know there is alot of errors and mistakes:

Code:

#include<stdio.h>
void merge(int firstArray[],int secondArray[],int size) {
int mergedArray[size],i=0,j=0,k=0;
while(i<size||j<size) {
if(i==size) {

[Code]...

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C++ :: Merge Two Sorted Files Failing

Oct 7, 2013

I have to merge two sorted files. Algotrithm that i'm using is below, but it reads not all the numbers in the files, and stops, even the files contain the same number of elements. What is wrong, I can't understand.

ifstream f1("E:desc1.txt");
ifstream f2("E:desc2.txt");
ofstream f("E:desc.txt");
cout <<endl<< "Nuerele sortate: " <<endl;
int n1, n2;
f1 >> n1;
f2 >> n2;

[code]...

desc1.txt is:

99 97 95 93 91 89

and desc2.txt is:

100 98 96 94 92 90

and I'm getting this:

100 99 98 97 96 95 94 93 92

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C++ :: Output Data From Two Sorted Arrays Into One File?

Apr 7, 2013

I am trying to output data from two sorted arrays into one file(which should also be sorted). The program works for most of the data, but after it reaches a certain record begins outputting garbage. I'm sure part of the problem is that I don't know what to include in my while loop that outputs to the file.

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

[Code]....

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C++ :: Pass 2 Arrays Into Void Function And Return Values To One Function?

Feb 12, 2014

I'm trying to pass 2 arrays into a void funtion, and return values to one function.

this is the the program I'm working with, after I'm done I have to split it into 3 files, a header, a main, and a separate cpp file for the functions to live in.

#include <iostream>
using namespace std;
void processArrary(int numberCount[], int Numbers[], int intnumberSize, int numberCountSize);
int main() {
int Scores[26] = {76, 89, 150, 135, 200, 76, 12, 100, 150, 28, 178, 189, 167, 200, 175, 150, 87, 99, 129, 149, 176, 200, 87, 35, 157, 189};
int numberCount[8] = { 0 };

[code]...

The goal of this program is to separate and count the groups of numbers then output the amount of numbers in each group. Near as I can tell, everthing should work, but I'm getting all zeros to be displayed in each group.

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C++ :: How To Merge Two Arrays

Feb 12, 2014

Compiled on turbocpp 4.5.....error is that the final merged array is much bigger with garbage values...

Code:
//cpp program to concatenate 2 arrays
#include<iostream.h>
#include<conio.h>
//the class
class array

[Code] .....

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C :: Merge Two Arrays Without Need To Iterate

Nov 19, 2013

I've come to a point in tuning my algorithm, where I need to sum the elements of two arrays, eg.:

array1: (1,1,1)
array2: (2,2,2)
arrayOut: (3,3,3)

Is there any way how to do that without need to iterate? Some memory hacks?

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C :: Merging Two Arrays In Merge Sort

Apr 9, 2014

I have been trying to merge the two arrays in merge sort but I am not able to do so. I am getting only half of the array.

Code:
int i,j,k,a[100],n,temp;
printf("Enter array size: ");
scanf(" %d",&n);
printf("
Enter the numbers:");

[Code] ....

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C++ :: Pointers And Arrays - Program To Display Sorted List And Average Of Scores With Appropriate Headings

Apr 22, 2014

I am writing a class that dynamically allocates an array that holds a user-defined number of test scores (test scores go from 0 to 10 both included). Once all the test scores are entered and validated (values only between 0 and 10, both included), the array should be passed to a function that sorts them in ascending order. Another function should be called that calculates theaverage of all the scores.The main program should display the sorted list of scores and the average of the scores with appropriate headings.

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C/C++ :: Function Not Returning Values - Structs In Arrays

Feb 25, 2015

I wrote this code for a homework assignment, everything runs fine but the function void percent_votes (line 66) isn't calculating properly, it outputs 0.00 for each value. I have tried everything I can think of to try and make it work.

Here is the assignment: Write a program that allows the user to enter the last names of five candidates in a local election and the number of votes received by each candidate. The program should then output each candidate's name, the number of votes received, and the percentage of the total votes received by the candidate. Your program should also output the winner of the election.

Here is the code I have written:

#include <iostream>
#include <string>
#include <iomanip>
#include <cmath>

[Code].....

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C :: Code That Takes Two Arrays From The User And Merge / Sort?

Oct 27, 2013

I'm trying to write a code that takes two arrays from the user (presumably in ascending order) and then passes the sizes of both arrays and a pointer to each to a separate "int* mergeArrays" function that will merge sort the two. I've written a lot of the code, but I can't get it to compile. I get errors: lab6.c: In function "main":

lab6.c:31:14: error: expected expression before "int"
mergeArrays(int* firstArray, int size1, int* secondArray, int size2);
^
lab6.c:31:14: error: too few arguments to function "mergeArrays"

[Code] ....

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C :: Can't Get A Double Type Output

Apr 1, 2014

this is what I got so far

Code:
#include <stdio.h>
#include <stdlib.h>
int main() {

[Code].....

he problem is that when I print out the three sums at the end of the program I dont get any decimal points but just zeros like something.00 instead of something.50 etc

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C :: Structs With Double Arrays

Apr 19, 2014

The main is not working properly, I get strange missing parenthesis notices and array errors which I am not understanding. How to identify the errors. Functions are included.

Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int menu ();
double change_value (double * value);

[Code] ......

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C++ :: Possible To Use Data Type Double Or Float For Array?

Mar 9, 2014

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

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C/C++ :: Use Modulus Operator With Double Type Variables?

Mar 13, 2013

how can we use modulus operator with double type variables

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C/C++ :: What Data Type Is The Result Of Calculation On Int And Double

Jun 24, 2013

okay for instance
int x = 4;
double y = 2;  
printf("%d", (x / y + 5));

what data type is
(x / y + 5)
??

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C++ :: How To Pass Array To Function And Return It As Sorted Vector

Sep 17, 2014

How to pass my array to the function and return it as a sorted vector. I'm kind of lost with the functions part.

Problem: Write a program that performs a sorting routine as discussed in class. Create an array of 10 integers (e.g., 63, 42, 27, 111, 55, 14, 66, 9, 75, 87). Pass this array to a separate function that sorts the integers and returns a vector containing the sorted integers. Use either the SELECTIONSORT algorithm or the INSERTIONSORT.

Code so far:
#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <iomanip>

[Code]...

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C++ :: How To Compare Two Double Values

Mar 24, 2014

I want to compare two double values

double x = 3072.00000000;
double y = 3072.0000000;

when checking with if its not working

if(x==y) it not working

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C++ :: Double Values On Cout

Mar 6, 2014

Here is code first:

//fp_screen.h
class fp_screen{
public:
double fps;
double xx3;

[Code] .....

fps:1.16922e+006 // this will happen 80%
fps:900 // this is how it should be

if i do cout << "fps:" << (int)screen.fps << endl;

Somethings number is right like 800 or else
put sometimes its 5423423... something.

What is going on here?

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C :: Assigning Values To Arrays / Printing Arrays

Jul 1, 2014

Using a for loop, construct two 100 element arrays, x and y, such that element i of x stores the value sin(2*pi*i/100)) and the corresponding element of y stores cos((2*pi*i/100)). Print the values stored in the elements of x and y as you calculate them.

I have attempted to solve it but I'm not sure why the value 0 is only being printed, maybe I haven't assigned sin(2i/100)) and cos((2i/100)) to the arrays properly?

Code:
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int main () {

[Code] .....

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C++ :: No Operator Found Which Takes A Right-hand Operand Of Type Double

May 17, 2014

while (getline(inStream, line))
{
while (inStream >> Student.getId() >> Student.FNAME >> Student.MINIT >> Student.LNAME >> Student.GENDER >> Student.UNITS >> Student.getGpa())
{
while (Student.getId() != id)
{
outStream << line << endl;
}
}
}

This is what I have right now. It shouldn't be a problem, but for some reason I am getting an error trying to >> Student.getGpa()

Error1error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'double' (or there is no acceptable conversion)c:location1301Project 5

I will post more code if needed, but... I just don't know. I have a TON of code so I would rather not if I don't have to.

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C++ :: Pass Double Pointer Of Object Into A Node Of Self Similar Type?

Nov 30, 2014

The following code compiles and runs fine till it reaches line 16 and gets a sigsev violation which I'm not sure about as to why. I have no problem passing the object of type node** into the constructor of base and storing it into the double pointer node** copy;; but when I call the function void pass(node** temp) it crashes.

#include <iostream>
class base;
class node {
private:
node** data;
public:

[Code] .....

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Visual C++ :: Comparison Of 2 Double Values

Dec 27, 2013

I have std::vector of players and each player have its own value. The value is of the type double, but the original value are of the "XX.00".

Now what I'm trying to do is to insert a player into this vector. For that I need to find a place and to find a place I need to compare player value.

So lets say I have a player in the vector whose value is 24.00 and I am trying to insert a player whose value is 25.00. To my surprise MSVC 2010 tells me that:

24.0000000000000 == 25.00000000000

I do aware that comparing double type is not going to work like this, but I would expect not to have such big of a difference. ;-)

Why this comparison is true and how to eliminate such thing?

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C/C++ :: Seg Fault In Merge Function

Mar 12, 2015

#include<stdio.h>
#include<stdlib.h>
#include<sys/time.h>
#include<time.h>
#include<math.h>
typedefstruct points{
float axis[2];

[Code] .....

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C++ :: Member Function To Shuffle Content?

Nov 14, 2014

Is there member functions for STL's like vector,list etc., to shuffle the content of that STL.

eg:

int arr[] = {1,2,3,4};
std::vector<int> v1(arr, arr+ sizeof(arr) / sizeof(int) );

now i need to shuffle the data randomly like

Now vector may contain {3,2,4,1} or {2,1,4,3} ...

I have taken vector as an example. let me know if there is any alternative way with other STL's

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C++ :: Unsigned Char Array - Assigning Values Converted From Double

Aug 3, 2014

I'm having a pretty weird problem. I've created an unsigned char array for an image buffer:

buffer_rgb = new unsigned char[_w * _h * 3];
memset(buffer_rgb, 0x0, sizeof(unsigned char)* _w * _h * 3);

And I add pixel color values to it like so:

buffer_rgb[i] = ((unsigned char)(col[0] * 255));
buffer_rgb[i + 1] = ((unsigned char)(col[1] * 255));
buffer_rgb[i + 2] = ((unsigned char)(col[2] * 255));

Where col is a 'vec4' struct with a double[4] with values between 0 and 1 (this is checked and clamped elsewhere, and the output is safely within bounds). This is basically used to store rgb and intensity values.

Now, when I add a constant integer as a pixel value, i.e.:

buffer_rgb[i] = ((unsigned char)255;

Everything works as it should. However, when I use the above code, where col is different for every sample sent to the buffer, the resulting image becomes skewed in a weird way, as if the buffer writing is becoming offset as it goes.

These two images illustrate the problem:

tomsvilans.com/temp/140803_render_skew.png
tomsvilans.com/temp/140803_render_noskew.png

You can see in the 'noskew' image all pixels are the same value, from just using an unchanging int to set them. It seems to work with any value between 0-255 but fails only when this value is pulled from my changing col array.

Whole function is here:

// adds sample to pixel. coordinates must be between (-1,1)
void Frame::addSample(vec4 col, double contrib, double x, double y) {
if (x < -1 || x >= 1 || y < -_aaspect || y >= _aaspect) {

[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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