C++ :: How To Enable Array To Count Items From A Group
Dec 27, 2013
Arrays are by far the most fun to work with and I really need see if its possible to enable an array to count apples, pears, peaches, from a group of three each.
If any of the fruit groups were chosen how might an algorithm be put together to count how many were chosen from each group. But lets take into consideration that these fruit groups are not supposed to be randomly generated, instead they belong as an array with certain amount of chosen occurrences. To show how many fruits were chosen from each group example, 1 from group 1, 2 from group 2, 3 from group 3 the out put is the important part because it shows the group and the occurrence of that group. the algorithm should be able to display the group with an occurrence as well
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Sep 26, 2013
I'm trying to make an array that takes a group of numbers and finds the largest number into a template class.
template<class TYPE>
void Integers(TYPE data) {
int integers[] = {4, 25, 32, 85, 150, 12, 98, 200};
int i = 0;
int Max=integers[0];
for (i=1; i < 8; i++) {
[Code] ....
I'm sure I'm going about it all wrong, but I'm not sure as to get it so that it will accept the arrays input.
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Dec 16, 2014
4.1 Write a program that will count from 1 to 12 and print the count, and its square, for each count.
4.2 Write a program that counts from 1 to 12 and prints the count and its inversion to 5 decimal places for each count. This will require a floating point number.
4.3 Write a program that will count from 1 to 100 and print only those values between 32 and 39, one to a line. Use the incrementing operator for this program.
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May 22, 2013
working on this code I have encountered a few issues. My program lists the occurrence of each letter but i'm unsure of how to enable numeric variables. how to improve the overall quality of the code.
Code:
#include <stdio.h>
#include <string.h>
int main()
{
char string[100], ch;
int c = 0, count[26] = {0};
printf("Enter a string
[Code]...
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Jun 22, 2014
i have tried to search on the Internet but haven't found a suitable result that links in with what I want to do, that is to creation a WPF application and when you press a enable button it will enable the LAN and when I click the disable button it will disable the LAN until i click the enable button again. Now I know how to creation a WPF and the buttons, but how would I do the disabling LAN and enabling LAN?
By LAN i mean just the networking adapters, so that the PC cannot connect to a router and then the Internet.
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Nov 19, 2013
I have ploughed through the exchanges in all the forums, yet I still cannot make it work. The following is a tiny Code::Blocks program, written to isolate the problem:
// resource.h
#define IDR_MYMENU101
#define ID_FILE 102
#define ID_DISABLE103
#define ID_ENABLE 104
#define ID_MESSAGE105
#define ID_EXIT106
[code].....
case ID_ENABLE is similar to case ID_DISABLE above, and neither works. case ID_MESSAGE and case ID_EXIT both works as expected.I have tinkered with EnableMenuItem(), but without success.
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Sep 17, 2014
template <typename FIRST, typename... REST, typename std::enable_if<std::is_convertible<FIRST, Base*>::value>::type* = nullptr>
void foo (FIRST first, REST... rest) {}
that successfully allows me to enable the function foo() only if FIRST is convertible to Base*, but I also only want foo() enabled if each type in REST... meets the same condition. What is the syntax for that? If no such syntax exists, how to achieve that effect?
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Dec 5, 2012
I have a version of an app in 64bit but the problem is under program files on windows 8 64bit it doesn't have access to the programs files folder... usually virtualization will redirect it to the virtual store but with 64bit exe's this doesn't happen automatically. How do I enable it in code or in the manifest file?
From MSDN:
Virtualization is only enabled for:
32 bit interactive processes
Administrator writeable file/folder and registry keys
Virtualization is disabled for:
64 bit processes
Non-interactive processes
Processes that impersonate
Kernel mode callers
Executables that have a requestedExecutionLevel
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Nov 26, 2012
The example enable a client to iterate the internal std::vector using being() and end().
Code:
class foo {
public:
typedef std::vector<std::string>const_iterator iter;
iter begin () const;
iter end () const;
[Code] .....
In the future I see the need for this class to be able to control sequence (sorting) and also show a subset of the complete list based on a search parameter.
Using std::sort appear to solve the ability to sort the collection.
How can I return an iterator to the client which only iterates a sub-set of all items in the std::vector?
An example would be, I add this method to the class;
Code:
void find(const std::string& st);
So if the client performs (below) only items in std::vector that contains the character "a" should be possible to iterate.
Code:
foo f;
f.search("a");
One option would be to operate with two collection inside the foo class. One more static containing all items and the other containing the sorted and filtered items. This would lead to some copying but should work. Far from perfect.
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Jan 22, 2015
iam trying to count the same numbers in an array just once like
38
38
40
38
40
37
the output should be 2 since 38 is repeated and 40 too but for my code the output is 3 thats an example of how it should be in a nutshell i want same number to be counted just once in the whole array
and here's my code :
#include <iostream>
using namespace std;
int main(){
[Code].....
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Apr 29, 2015
Using C . I have been tasked (for a University assignment) to create a program that will enable a user to upload an image and convert that image into ASCII text using SDL on a Linux system. I've managed to open a window, display an image (non-selected) and convert it into grayscale using
case SDLK_g:
for (int y = 0; y < image->h; y++) {
for (int x = 0; x < image->w; x++) {
Uint32 pixel = pixels[y * image->w + x];
Uint8 r = pixel >> 16 & 0xFF;
Uint8 g = pixel >> 8 & 0xFF;
Uint8 b = pixel & 0xFF;
Uint8 v = (0.212671*r)+(0.715160*g)+(0.072169*B)/>;
pixel = (0xFF << 24) | (v << 16) | (v << 8) | v;
pixels[y * image->w + x] = pixel;
I am absolutely clueless as to how I can get the user to upload an image to the program and then begin the image -> ASCII conversion. I've found seem to be written in C++ or C# to make the conversion I should be using the GetPixelColour command?
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Jan 30, 2015
So I already gave this a go and will post my code below. The question is about the last loop before the program cout's. i thought the count would keep track of the repeated numbers so i could display them but it does not. I italicized the loop i am referring to. or at least i tried to xD
#include <iostream>
#include <iomanip>
using namespace std;
int main() {
int inputs[30];
int numofloops;
int maxvalue = inputs[0];
[Code]...
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Jan 17, 2015
i have a problem i cant find a way to count how many times a character occur in a character array the out put should be
a=2
b=1
but my output is
a=2
b=1
a=0
i cant find away to get rid of the other a letter i dont know what to do
#include <iostream>
using namespace std;
int main() {
char array[3] = {'a','b','a'};
char frequency[26] ={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
[Code]...
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Sep 26, 2013
I must count the number of occurrence of all numbers in array , i wrote a code but it does not work properly
#include <iostream>
int main (){
int i,n,tmp,counter=0;
std::cout<<"Enter the size of the array:"<<std::endl;
std::cin>>n;
int *Array=new int [n];
int *counterArray=new int [n];
[Code] .....
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May 13, 2013
Perhaps this can be a very popular error,
Code:
#include <stdio.h>
#include <tchar.h>
#include <iostream>
#include <string>
#include <fstream>// enable writing to and reading from files
#include <cstdlib>
#include <time.h>
using namespace std;
class Person {
[Code] .....
Error list:
Code:
Error 1 error LNK2019: unresolved external symbol "void __cdecl saveperson(void)" (?saveperson@@YAXXZ) referenced in function _main H:Cry_DevProgrammingC++Using_class_ in_ c++Using_class_ in_ c++Using_class_ in_ c++.obj
Error 2 error LNK2019: unresolved external symbol "void __cdecl displayperson(void)" (?displayperson@@YAXXZ) referenced in function _main H:Cry_DevProgrammingC++Using_class_ in_ c++Using_class_ in_ c++Using_class_ in_ c++.obj
Error 3 error LNK2019: unresolved external symbol "void __cdecl editperson(void)" (?editperson@@YAXXZ) referenced in function _main H:Cry_DevProgrammingC++Using_class_ in_ c++Using_class_ in_ c++Using_class_ in_ c++.obj
Error 4 error LNK1120: 3 unresolved externals H:Cry_DevProgrammingC++Using_class_ in_ c++DebugUsing_class_ in_ c++.exe 1
What I can do to fit this problem?
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Jul 16, 2013
I have N vectors which look like this:
[1→m] [m+1→2m] [2m+1→3m] [3m+1→4m] [4m+1→5m]..... [{(N-1)m}+1→Nm]
I want to select 1 element from each vector without duplication of any combinations.
Essentially only when all combinations are done with 1st element in first vector ,only then it should move to next element in first vector say i have elements :[123] [456] [789]
my combinations should be like
147
148
149
157
158
159
167
168
169
247….
Also, i need no repetitions and only after all combinations of 1 are done only then the loop has to move to next combination ie 247 combination and so on.
i tried NCK (n choose k) command but it gave me random combinations.how should i go about it with using minimal for loops
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May 10, 2014
I have to count the letters from a text file into an array so the first spot is the number of A's second spot number of B's and so on then take the array and sort it in decending order how could i do this without loosing track of where the numbers go so if there are more b's than a's they switch but how will i know where each letter has moved in the array after it has been sorted?
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Nov 20, 2012
#include <iostream>
using namespace std;
int main() {
int h;
double A[10][10];
[Code] .....
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Oct 15, 2013
I'm building a box to take in several arrays of different lengths. one group happens every 10 seconds. one of them happens every 5 seconds. this is from a weather station.
10 sec
subgroupA[14]
subgroupB[24]
subgroupC[17]
subgroupD[12]
subgroupE[34]
5 sec
subgroupC[17]
I plan to retransmit them, substantially unchanged at a lesser rate to save radio power over a serial data link. buried in groupD, I want to change a few chars before retransmit.
I don't want to go to the trouble of doing a structure for each of them since most will be resent unchanged. some entries are chars, some are decimal, some are a mix. I guess it might be convenient to further define groupD, maybe not.
what is the best way to declare the group? I want them to be contiguous since that's how they will end up in the tx buffer. Each subgroup has its own checksum, so I planned it this way to make checksum more convenient.
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Dec 13, 2014
I'm a beginner in C programming and I've got a task that can't finish it..I'm supposed to generate and print the subsets of a group that its size I should enter. Pointers are not allowed!!
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May 25, 2013
I currently need separating my Prime numbers in group for my assignment. I absolutely do not know how to do this. I am able to find out if the number I used is prime and see how many prime number there are between 1-100 and then 1-1000 (168 primes) and so on. The thing that I need to do is find the number of prime numbers between 101-200, 201-300, 301-400, and so on until 901-100 and have it show on screen. Here is the exact assignment that I’m supposed to find out:
Assignment:
Write a C++ program to calculate and display the number of primes from 1 to 100,000, separated in groups of 100, 10 groups per line. To be more precise, on the first line of output, display the number of primes between 1 and 100, 101 and 200, etc., up to 901 to 1000. Then display the average primes per group. For example, there are 168 primes from 1 to 1000, so the average number of primes per group of 100 (or percentage) is 16.8. Then repeat the process for the groups of 100 between 1001 to 1100, 1101 to 1200, etc., for all groups of 1000 all the way up to 100,000. Your results should be as presented below, under testing.
Testing:
The output of your program should be the following, according to my calculations. Each group (g1, g2, etc.) is the number of primes in a group of 100 numbers. For example in line 1, g1 is the group from 1 to 100, g2 is the group 101 to 200, etc. For line 2, g1 is the group 1001 to 1100, g2 is 1101 to 1200, and g10 is the group from 1901 to 2000.
g1 g2 g3 g4 g5 g6 g7 g8 g9 g10 Average Primes
----------------------------------------------------------------
25 21 16 16 17 14 16 14 15 14 16.8 for 1 to 1000
16 12 15 11 17 12 15 12 12 13 13.5 for 1001 to 2000
14 10 15 15 10 11 15 14 12 11 12.7 for 2001 to 3000
12 10 11 15 11 14 13 12 11 11 12.0 for 3001 to 4000
…
…
…
7 10 5 10 7 11 7 6 11 8 8.2 for 97001 to 98000
7 5 9 9 11 8 7 8 12 11 8.7 for 98001 to 99000
8 11 8 8 7 9 8 10 10 8 8.7 for 99001 to 100000
Total number of primes from 1 to 100000: 9592
Average primes per 1000: 95.92
Percentage of primes from 1 to 100000: 9.59
Here is my code that I have done so far:
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
bool isPrime(long candidate);
long primeCount (long start, long end);
[Code] ....
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Oct 4, 2014
So far i know that the pointer is address value to the real variable. Pointer size depends on operation system right?
for example
32bit systems: 4byte pointers
64bit systems: 8byte pointers
128bit systems: 16byte pointers?
Anyways, there have to be an variable type in c++ what can hold a pointer.
Let's imagine that the int is the thing im looking for
struct stc1 {
char *chars;
int ints;
}
struct stc2 {
char *chars;
float floats;
[Code]....
My wish is to hold different types of variable or groups of different type of variables in one variable.
I am developing program in windows now yet it will be used in linux and who knows with what x bit systems.
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Oct 11, 2012
Is there any methods to add scroll bar for group box
My code scenerio is: I have many groupbox in form, all group box will be appears in same place and also height and width is fixed. I'm doing group box visible true/false according to condition.
So some groupbox ecxeeds the width and heighto so I want to put this all in scroll Bar
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Dec 17, 2013
How to sum groups in C++? I have a class with 2 attributes (Group and Price). I need to find the group with the highest amount. I can find the max when it comes to finding a set of individual numbers but not when a group is required. For Ex:
Group A64
Group A48
Group A18
Group B49
Group B36
Group C64
Group C75
Group C87
Group C72
The group with the highest amount is GROUP C
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Mar 19, 2013
How can i count the total no of unique elements in an array? Like I have an array.
Code:
int array[]= { 2,1,4,0,3,3,0,0,1,2,1,1}
// As it has 0,1,2,3,4 as unique values so total no of unique values are=5
int unique =5;
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Feb 28, 2015
I need to calculate how often each letter appears in a text file from a function that is called from main() with an array of pointers to char and how many pointers there are in the array. The code i have so far is:
#include<stdio.h>
#include<string.h>
#include<ctype.h>
#include<stdlib.h>
[Code]....
I get no errors and it runs but it gives me the wrong output. I know my array is correct because when i print it in main() it is correct but each letter is incorrectly counted. When i give it the input .txt file of:
This is one line of a string
This is another
This is the third one
Wow heres another one
It counts a as 8
b as 1
c as 3
etc.
I have hand traced it and cant figure out why it isnt giving me correct values
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