C++ :: How To See Actual Size Of PTR
Sep 26, 2014How can I see the actual byte size of the pointer as output in the command prompt?
#include <iostream>
using namespace std;
int main () {
[Code].....
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C/C++ :: Sizeof (struct) Returns 6 More Bytes Than Actual Struct Size?
Sep 14, 2014#include <stdio.h>
#define MAX_USERS 20
struct {
char ID[10];
char Name[40];
int Pos;
[Code] .....
I was attempting something weired with address to move data around when I discovered that the size of the array is not what I expected. I am passing this structure as &Users to a function that declares it as a void *, then I can deal with chunks of data (memmove) and not have to worry about index or things like that. However...sizeof is returning something I do not understand.
C++ :: What Is The Actual Use Of Function Pointer
Dec 27, 2013two things I did'nt get till now
Q->1 what is the actual use of function pointer ?
Q->2 what is use of passing function as an argument to another function ?
C++ :: Converting Octal Value To Actual Number?
Jan 22, 2015I'm a games/apps developer and right now I'm developing games/apps for iOS, Android and also PC / Facebook. I've also been working on C++ for some time but since I'm learning it all by myself, I still have some beginner doubts.
Is there any easy way to code a value conversion (for example an octal value to an actual number)?
C# :: Get The Actual String Passed By Reference?
Apr 8, 2015I have a list of Strings that are passed to a method consecutively by reference from a class. I want to get the string value passed to the method at a point in time. The reason is to perform an if statement.
//this is the class that holds that holds the constants.
using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace xxx.Functional.xyz.Login {
public class Constants {
public static String Username = "paul";
public static String Code = "4";
[code].....
C/C++ :: What Is The Actual Concept Of Delete Operator
Dec 31, 2012I am not getting the real concept of delete operator. If it deallocates the memory, then why i am getting such output..!!
int main() {
int *a , b=5;
a = & b;
cout << *a << endl;
delete a;
cout << *a;
getch();
return 0;
}
Output:
5
5
C++ :: Display Actual Number Without Leading Zeros
Jan 20, 2014With the loop below, is there a way to display the actual number without the leading zeros (scientific notation) or will it just display 0 since there are so many leading zeros?
num = 1;
while (num > 0){
num /= 2;
}
cout << num;
C :: Not Getting Actual Output While Displaying Hex Numbers In Decimal Format
Apr 26, 2013I need to display 0-15 hex numbers[0X00-0x0F] in decimal value...& I'm getting the output but it's not exactly what it should be,below is my code.. [This not the complete code,but main part where the changes are done]
Actual output i should get is for 1v it should generate 0001,for 2v it should generate 0010 and simultaneously till [15v-1111]... But what i'm getting is exactly different to this for eg for 7v,8v&9v the bits generated are 1101,1011,1011 respectively...
[URL] ....
Code:
sbit V1 = P2^0;
sbit V2 = P2^2;
sbit V3 = P2^4;
sbit V4 = P2^6;
#define DAC_table V1,V2,V3,V4
#include <stdio.h>
#include <string.h>
idata unsigned int ptr2tbl ;
[Code] .....
C++ :: Program To Find Actual Distance Between Two Points On A Grid
Jul 3, 2013Currently I am working on a program that will find the actual distance between two points on a grid. It also determines the angle of the line segment in degrees. Now, i need it to be able to find any other points on or near the line. It will be running in a loop to find each additional point sequentially until all the points have been plotted. Unfortunately, I am not entirely sure how this is done. So far, I think that I could develop an algorithm that converts the angle into a ratio of vertical movements to horizontal ones.
View 7 Replies View RelatedC++ :: How To Convert String To Double Without Changing Actual Data
Jun 3, 2013I have to convert string to double. i'm using "atof" function to achieve same.
I have string as "0.0409434228722337" and i'm converting with "atof" But i'm getting double value as "0.040943422872233702". Why it adds 02 additionally at the end?
More example :
"0.0409434228722337" converts to "0.040943422872233702"
"0.067187778121134" converts to "0.067187778121133995"
Is there any other possibility to convert string to double without changing data ?
C# :: Display Listview Items In Actual System Fonts
Sep 11, 2014I'm trying to use a listview component to show all the fonts on my system, and display each item (row) in the actual font design.
When I run the following code, nothing displays in the listview.
If I rem out line 4, then the list populates with all the fonts, but of course, in the default listview font.
I thought I read somewhere that each item in a listview can be set to a different font.
int i = 0;
foreach (FontFamily oneFontFamily in FontFamily.Families) {
listView1.Items[i].Font = new Font(oneFontFamily, 10);
listView1.Items.Add(oneFontFamily.Name);
i++;
}
C++ :: Trace Function - How To Display Actual Values In Console
May 24, 2014Code:
Real x = (arg.state.X.abs - mViewport->getActualLeft())/float(mViewport->getActualWidth());
Real y = (arg.state.Y.abs - mViewport->getActualTop())/float(mViewport->getActualHeight());
_trace("%f %f
", x,y);
Code:
#include <Windows.h>
#ifdef _DEBUG
bool _trace(TCHAR *format, ...) {
TCHAR buffer[1000];
[Code] .....
Results:
f f
f f
f f
f f
How to display the actual values in the console?
Visual C++ :: Obtaining Actual Effective Execution Time Per Thread With Hyperthreading
Jun 13, 2013I'm looking for a function like GetThreadTimes, but one that gives correct results in a hyperthreading CPU.
For instance, if you start 2 threads on a CPU with 1 physical core and 2 logical cores, GetThreadTimes will say that both these threads use 100% CPU.
However, in reality they only use 50% each. Is there a function that returns correct results, or is there another workaround?
Visual C++ :: Change Frame Window Size According To Increase In Font Size
Nov 27, 2012Change the frame window size according to font size increases.
View 3 Replies View RelatedVisual C++ :: Text Size In Screen Is Different From Size In Print Preview?
Feb 1, 2013I must take an old MFC project in VC++ 6.0 and make changes.
The problem is text size in screen is different from size in print preview.
for example with this font
Code:
CFont f50;
f50.CreateFont(100,0,0,0,FW_BOLD,0,0,0,DEFAULT_CHARSET,OUT_DEFAULT_PRECIS,
CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,FF_DONTCARE,"Frutiger LT Std 45 Light");
And this text
Code:
s=_T("Let's try to calculate the size of this text");
and with MM_LOMETRIC map mode
GetTextExtent() returns me:
On screen: (1595,99)
Ink printer + print preview: (1589,100)
PDFCreator + print preview: (1580,100)
comparing with screen size the height is bigger but lenght is smaller. I don't understand.
I can understand that different printers process the fonts in different way and then to have different lenghts. That's not the problem. The problem is I need to simulate in screen the same behaviour i will have on printer because these texts are being aligned in the document, and I don't want to see that the text si aligned different in text than in paper.
What can I do to render the text on screen with the same size I will have on the printer? Print preview is doing it. Should I change the font parameters? is something related with pixels per inch?
C :: Why Size Of Struct Is Larger Than Sum Of All Size Of Its Members
Jul 11, 2013I was wondering why, in C, the sizeof of a struct is larger than the the sum of all the sizeofs of it's members. It only seems to be by a few bytes, but as a bit of a perfectionist I fine this a bit annoying.
View 1 Replies View RelatedC :: Why File Size Of BMP Always Zero
Oct 6, 2013I've been looking into the file structure of BMP images and everything I'm reading says that the 4 bytes following the signature are designated as the filesize of the bmp file... It's always zero for me regardless of the BMP file. The signature is always correct though.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>
[Code]....
C/C++ :: Max Size Of Array?
Oct 27, 2014I'm trying to put all of the words in a text document into an array but this text document is 2,138 kb, and when my program is crashing when I try to put it into an string array. Could the file be too big to put into the array?
View 2 Replies View RelatedC/C++ :: Different Size Of Values
Nov 10, 2014The problem is with that a. What is it, a pointer? What's the difference between the a in the main function and the a in the function?
#include <iostream>
#include "Header.h"
using namespace std;
short int capacity(int* a) {
int capacity;
[Code] ....
The function it returns i think the size of the pointer instead of returning the size of my array. I don't think i fully understood pointer arithmetic.
C/C++ :: Getting The Size Of Array?
Jun 12, 2014Here is what I've tried:
int numbers[] = {8, 2, 0, 4, 100, 5};
for(int i = 0; i < sizeof(numbers); i++){
cout << numbers[i] << endl;
}
However the results in the console is: 8 2 0 4 ,What am I doing wrong? Am I using the wrong built in function or something? I googled this and one of the links that came up stated to just do something like
arrayName.size()
but that didnt work for me either...
[URL]
Also, I know that I just enter the size of the list manually, in this case make i < 6 but I still want to know if there is a built in function or something.
C/C++ :: Size Of Integer In Dos?
Mar 12, 2012what is the size of integer in dos?
View 2 Replies View RelatedC++ :: How To Change Font Size
May 19, 2013how am i supposed to alter font size of text which appear in output screen?
View 1 Replies View RelatedC++ :: Let The User Specify Array Size
Oct 12, 2014I am not sure why I am receiving the error message:
Error C2466: cannot allocate an array of constant size 0
When I run the code:
Code:
int s;
cout<<"Enter the size:
";
cin>>s;
int array[s];
C++ masters,
C :: Size Of Function And Pointers
Apr 6, 2014I have this simple program:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static unsigned char cmd[]={
0x01,0x80,0x00,0x00,0x00
[Code] .....
All is right except the size. Why does it give 80x1 as size instead of the digit 5?
C :: Size Of The Data Type
Mar 4, 2014I want to find the size of the data type with out using sizeof() operator.
View 9 Replies View RelatedC :: Invalid Next Size Error
Feb 13, 2013After looking online for a string replace function in C and finding so many examples that go through the entire string twice. First round to find how number of occurances of substitute in string, using that to malloc for a new string to include additional space for replace, then going through the search string again to get all but what's to be substituted out. I feel it's kind of silly to go through the string twice. Therefore, I'm trying to implement my own string replace, that only searches through the string for what's to be substituted, once.
Here is my code:
Code:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
char *strreplace(char * string, char * sub, char * replace);
}
[code]....
Here is the same code, but with execution + some syntax highlighting: Ideone.com | Online C Compiler & Debugging Tool..It works great, until it gets to grabbing whatever remains in the search string after the last found sub. The realloc throws a runtime error:
Code:
*** glibc detected *** ./a.out: realloc(): invalid next size: 0x00011008 ***
Aborted From my understanding, this is from me going outside of the bounds of the heap and using memory I haven't allocated, or using a free'd pointer. I'm not seeing where either of these are happening in my code, and was wondering what the best way to go about figuring out where the error exactly occurs.