C++ :: Finding Size Of Array In Called Function

Nov 27, 2013

How to find the size of an array in called function? When we pass the array a argument to function definition we will be having base address of array, so my understanding is that we will not get the size of an array? but is there any hacking for this to find size of array other than passing as size an argument to this called function?

View 3 Replies


ADVERTISEMENT

C++ :: Finding Size Of Array Using Try Catch Blocks?

Oct 8, 2013

I am trying to find the size of an array using a Try-Catch block. As seen on the code, I want the error to be caught when the index is out of range in "while" loop but at each time, program stops working.

int x[] = {34,5,1,536,2};
int length = 0;
int tt = 0;
try {

[Code] ....

View 6 Replies View Related

C++ ::  Class Safe Array Type Print Function Not Working When Called

Oct 22, 2013

I've created a function where you can choose any bounds for an array based list (positive or negative, as long as the first position is smaller than the last position). However for some reason when I call the print() function in my application program it doesn't do anything. My print function is technically correct (I still have work to do on the output) but I can't figure out why it wont show anything at all. Below is my header, implementation, and main program files, along with results from running the program.

Header File:

//safearrayType Header File
class safeArrayType {
public:
void print() const;
void insertAt(int location, const int& insertItem);
safeArrayType(int firstPlace=0, int maxPlace = 100);

[Code] ....

ResultsEnter the first bound of yourlist: -3(this was my input)
Enter the last bound of yourlist: 7(this was my input)

Press any key to continue...

View 1 Replies View Related

C++ :: Finding Sum Of Two Fractions - Return Array In Function?

Jul 30, 2013

I am making a function that finds the sum of two fractions(fractions are arrays of 2 elements). how would I return an array?

int addFrac(int f1[2], int f2[2]){
int num1 = f1[0]; // numerator of fraction 1
int den1 = f1[1]; // denominator of fractions 1

[Code] ......

View 2 Replies View Related

C++ :: Passing 2D Array To A Function Where Size Of Array Is Not Known At Runtime

Jun 27, 2014

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.

View 2 Replies View Related

C# :: Finding The Size Of Multiple Lists

Sep 21, 2013

I am writing a Windows Form program, and currently it has 3 Lists. I need to loop through all three, and use each possible combination, so am using three nested for loops.

I found that if the outer loop had less elements than one of the inner loops/lists, some were missed off, as I need to save all the possible combinations of list a + b + c.

This is what I wrote:

Code:
public int CalculateOrderToProcessLists()//for three lists
{
int order = 0;
if (sListOne.Count() > sListTwo.Count() && sListTwo.Count() > sListThree.Count())
{
order = 123;

[Code ....

My problem is I would like to be able to have 4 (or more if possible) lists, and to calculate what order to process the lists will be exponentially more complex.

Any better way of comparing the sizes of the lists, so that I can use the nested loops of say 4 lists, but being able to use N number of lists would be awesome.

View 2 Replies View Related

C :: Finding Linked List Size

Feb 17, 2013

I'm simply trying to find the length of the linked list, but my findSize() function isn't working right and I'm not sure where it's going wrong...I get a segmentation fault when i run it, so probably out of bounds somewhere...just where?

Code:
typedef struct node {
char* value;
struct node* next;
} LinkedList;

int main() {

[Code] .....

View 7 Replies View Related

C :: Function That Returns ARRAY And Its SIZE?

Dec 24, 2013

to return the array i shall make a pointer function thats ok.. but how do I get the size return if i dont know the size?

if I need to make AXB=C and output C my new array doesnt have a size..

View 7 Replies View Related

C++ :: Function Argument As Array Size?

Feb 22, 2013

I made a function like follows:

void foo(const double va, const int q) {
int qaa[q];
......
return;
}

However, the compiler indicates allocator cannot allocate an array of constant size 0... how can I use the argument "q" to fix the size of array "qaa"?

View 8 Replies View Related

C++ :: Function That Accepts Array Of Integers And Its Size As Arguments

Feb 12, 2014

Write a function that accepts an array of integers and its size as arguments. The function should create a new array that is one element larger than the argument array. The first element of the new array should be set to 0. Element 0 of the argument array should be copied to element 1 of the new array, element 1 of the argument array should be copied to element 2 of the new array, and so forth.

The function should return a pointer to the new array. Use ONLY pointer parameters instead of arrays in both functions; use pointers (not subscripts) to move through elements of both arrays. Before calling the function, display your original array. When the function call is completed, display the new array.

Here is what i got so far:

#include <iostream>
using namespace std;
int *shifted (int * , int);
const int SIZE = 10;
int main () {
int array_size [30];

[Code] ....

View 1 Replies View Related

C++ :: Print Stars Function - Corresponding To Array Index Size

Nov 24, 2014

I am having trouble getting the stars to output correctly in the printStars function. the final output should look something like this:

#include <iostream>
using namespace std;
int readArray(int input[], int size);
void printArray(int input[], int count);
void printStars(int input[], int size);

[Code] ...

View 3 Replies View Related

C++ :: Keyboard Function That Is Called In Main Function To Make Shape Move

Jan 19, 2013

Ok so I am working on a game and I'm in the process of developing my Player class. Anyways, what I have is a keyboard function that is called in my main function to make a shape move.

void myKeyboardFunction(unsigned char key, int x, int y) {
switch ( key ) {

[Code].....

But when I try to call it, trying to copy my previous method,

glutKeyboardFunc(Player1.playerControls);

I get an error

error C3867: 'Player::playerControls': function call missing argument list; use '&Player::playerControls' to create a pointer to member

I get an error saying it can't convert parameters. I would just like to understand why the arguments become a problem when I make the function a member of my class, when the first method I used is so easy.

View 2 Replies View Related

C++ :: Function That Declares Array Of Char Of A Size Of 350000 Elements

Jun 5, 2014

I'm working on a piece of code written long time ago. Without getting in the details or too much context here, there is a function that declares an array of char of a size of 350,000 elements, in order to fill it (using a pointer) with the list of all running processes on the machine (using "ps -ejf" on a Linux box).

The size of the char array has been changed from 40,000 to 350,000 sometime along the years, probably because of a lack of space required.

What kind on data structure / storage would you use to store the running processes in order to eventually search for a value in it?

View 2 Replies View Related

C++ :: How To Have A Function Be Called Every Second

May 4, 2013

I am working on this project where I need a function to be called every second. At this time, I am thinking that I have to create a thread but I am clueless on how it will get called every second.

View 5 Replies View Related

C :: Reverse A String - Function Is Not Getting Called

Aug 29, 2013

I am new to C and trying to reverse a string but the function is not getting called.. the console says :

Enter a stringabhi
bash: line 1: 229 Segmentation fault (core dumped) ./program

Code:
#include<stdio.h>
#include<math.h>
#include<string.h>
char* reverseString(char input[]);
void main()

[Code] ....

View 6 Replies View Related

C++ :: Base Class Function Gets Called

Oct 26, 2012

Here are the classes:

BaseClass.h

Code:
class BaseClass {
public:
BaseClass();
virtual ~BaseClass();
virtual void printStuff() const;

[Code] ....

When I call printStuff, the DerivedClass's function gets called. Now, if I remove the const part from the DerivedClass's printStuff function, we call the BaseClass's printStuff function.

View 4 Replies View Related

C++ :: ROS Subscriber Callback As Member Function Does Not Get Called

Feb 27, 2015

There is already a thread with exactly the same problem I have, but the answer to solve the problem isn't stated at the end. Problem with callback as classmember.

View 4 Replies View Related

C :: Create Function That Is Then Called To Calculate Powers

Nov 11, 2014

As I am taking my first steps in C, I study K&R (I guess most of you did the same, right?)

In the introductory chapter about functions (1.7) there is an example showing how to create a function that is then called to calculate powers (b**n). I simplified it to calculate only one given power, 2**5:

Code:

#include <stdio.h>
int power(int m, int n);
main() {
printf("%d", power(2,5));

[Code]....

It will then be called to make the calculation in the above string.

First things first: we already know how to use while(getchar!=EOF) to count characters (K&R chapter 1.5.2) but what if -instead- the input is a specific string? How to "read" it and how to tell my program that the string is finished? And most important: "reading" will be done in the function or in the rest of the body?

View 1 Replies View Related

C++ :: Error - Reference To Non Static Function Must Be Called?

Feb 27, 2013

So on lines 36 - 39 (The commented out functions) is where I'm sure is causing this error because once I don't comment them out pretty much everywhere Flink or Rlink is used or defined I get this error.

#ifndef nodes_Nodes_h
#define nodes_Nodes_h
#include <cstdlib>

[Code]....

View 4 Replies View Related

C++ :: Write A Recursive Function Called Sumover

Mar 8, 2014

Write a recursive function called sumover that has one argument n which is an unsigned integer. the function returns double value which is the sum of reciprocals of the first n positive integers =.

for example sumover 1 returns 1.0
sumover 2 returns 1.5 like 1/1+1/2

View 11 Replies View Related

C++ :: Pure Virtual Function Called At Runtime

Jul 12, 2014

I'm currently making a game and what happens is that during runtime, it suddenly closes and a message is shown in the console saying "Pure virtual function called at runtime".

Here is the code: [URL]

The problem seems to occur somewhere between lines 662 - 695. And it seems to only happen when the size of the vector reaches 1.

View 2 Replies View Related

C :: Delete A File When Function Is Called And Starts Its Loop

Apr 24, 2013

I have a function and i want to delete a file when the function is called and starts it's loop i have used this code but unfortunately the file is not deleted ?

Code:
void evaluate(void) /*evaluate the population */{
int mem;
int i;
double x[NVARS+1];
char buffer[101] = {"save.txt"};

[Code] .....

View 7 Replies View Related

C :: Return 2 Values From A Called Function - Arguments And Parameters

Feb 2, 2013

Is there anyway we can return 2 values from a called function. Example

Code:
float xxxx(float a, float b, float c, float d)
{///
///
///
}

void xxx() {
int e,f,g,h;
////
////
xxx(e,f,g,h);
}

So if I want for example a+b and c+d, can i return those 2 answer? I don't think its possible since I am new into C programming.

View 5 Replies View Related

C/C++ :: Linked List Delete Function Freezing Program When Called

Aug 12, 2014

My program seems to be working fine, except for when I call on my delete function. I don't receive any errors, but when I call the delete function my program outputs nothing and freezes. As in, my print function (which is called before the delete function) doesn't even work. I've tried removing bits of the function to see if I could pinpoint where exactly the issue is, but I've had no luck.

#include <iostream>
#include <string>
using namespace std;
class List{
private:
struct node{
string _data;

[Code] ....

And the function that is causing me trouble:

void deleteNode(string data){
node* del = NULL;
t = h;
n = h;
while(n != NULL && n->_data != data){

[Code] .....

View 5 Replies View Related

C++ :: Function In One Src File Called From Code In Different Src File - Linker Error

Mar 27, 2015

I have a function in one src file called from code in a different src file.

In ig_cfunc.cpp

Code:
#include "ig_tools.h"
int x2_count = 0.0;
float rel_branch_degree_tmp = 0.0;
string type;
vector<int> is_disp_type;

[Code] ....

I am getting a linker error,

Code:
ig_cfunc.cpp:1609: error: `calc_rel_branch_degree' undeclared (first use this function)

I have deleted all of the objects and recompiled to make sure that everything is in sync. I can't see what the issue is here and I'm not sure what to do next. This code actually worked until I changed the name of the function, so the types are all correct and such. This is the format I use for all external functions ....

View 1 Replies View Related

C++ :: Finding Maximum Of A Function

May 8, 2014

What is the syntax to find the maximum of a function over the interval a≤x≤b starting at a with a step size of Δx ?

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved