C/C++ :: How To Deal With Overflow

May 24, 2014

I was just wondering how to deal with overflow. My code works for exponential when i put small numbers in like 2 and 3. So it would do 2^3 which would be 8. But if i try something like 2^44 then I just get 0.

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C :: How To Deal With Conflicts In Header Files

Nov 6, 2013

I have some header files with generic functions. And in one of them, I define TRUE and FALSE. Recently I started using another header file and it defined TRUE and FALSE as well. That caused GCC to throw an error, and not compile. In my case I can put #IFNDEF around the values so that if it is already defined they don't get defined again, but is there a better way to handle duplicate names? I assume the case would be the same for duplicated functions, how does that get handled?

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C :: Simple Parser / How To Deal With Slashes

Feb 13, 2013

I've knocked up a rough C parser for the purpose of colourizing code into XHTML/CSS, which makes me feel fancy. However, it doesn't quite handle comments properly. I can't quite work out how to deal with the slashes. Plus I'm sure there are other places that it slips up that don't feature in my simple tests, so here you go:-

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define FLAG_OUTPUT1
#define FLAG_EVEN2
#define NUMKEYWORDS32
}

[code]....

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C/C++ :: Convert The Functions To Deal With Integers Instead Of Chars

Mar 29, 2014

current functions are:

char *createEnvironment(int width, int height, int numWoodChips);
void printEvrionment(char *environment, int width, int height);

need to be:

int* createEnvironment(int width, int height, int numWoodChips);
void printEvrionment(int* environment, int width, int height);

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>

[Code]....

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C/C++ :: Deal 2 Hands Of Cards - Print Deck After Dealing

Apr 2, 2014

My assignment is to create a program to print a deck of 52 cards, shuffle it, deal 2 hands of 5 cards, then print the deck after dealing the 2 hands with the cards that were dealt removed. this is my code so far...

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define DECK_SIZE 52
void init_deck( int deck[] , int size ) ;
void shuffle_deck( int deck[] , int size ) ;

[Code] ....

I am having trouble dealing 2 random hands and how to print the deck with the cards removed.

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C++ :: How To Check What Causes A Stack Overflow

Sep 22, 2013

I'm getting a stack overflow error because for large numbers, this code I'm working on allocates too much on the stack.

Is there a way of tracking stack allocations specifically?

Will multithreading solve my problem if each thread is doing the static allocations?

Would I really have to use malloc or new every time I wanted to use memory just to make my code scale to huge numbers?

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C :: Bit Checking - Stack Overflow

Sep 19, 2013

I usually check if a bit is set using:

Code: bit = (number >> n) & 1; where `n` is the bit I want to check...

But I came across a stackoverflow answer saying:

bit = number & (1 << x); will not put the value of bit x into bit unless bit has type _Bool (<stdbool.h>).

Otherwise, bit = !!(number & (1 << x)); will..

So why is this? why the double !?

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C++ :: Runtime Stack Overflow

Jun 5, 2013

Here is my error message: Warning1warning C4717: 'getx' : recursive on all control paths, function will cause runtime stack overflow

and here is my code I will Bold the part that is giving me problems!

class point
{
public:
point();

[Code]....

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C :: Using Small Buffer With Sprintf Causes Overflow?

Jan 3, 2014

Code:
char buffer1[10];
char buffer2[10] = "something";
sprintf(buffer1, "with %s", buffer2);

In a statement like the one above, is there a threat/leak or does it only truncate the string that is loaded into buffer1?

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C :: Overflow Example And Order Of Memory Allocation

Jul 11, 2013

Small code to show overflow...But when I compile and run - buffer_one is not being overwritten when the byte size of buffer_two overflows .

Code:

#include <stdio.h>#include <string.h>
int main(int argc, char *argv[]) {
int value = 5;
char buffer_one[8], buffer_two[8];
strcpy(buffer_two, "two"); //Put "one" into buffer_one
strcpy(buffer_one, "one"); //Put "two" into buffer_two
}

[code]....

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C++ :: Overflow / Underflow Detecting Functions

Sep 15, 2014

I am performing arithmetic operations on very large integers that operate around the threshold of the maximum positive integer an int variable can handle (i.e. 2147483647) for a 32-bit machine. I have been studying the in-built functions in the C++ Standard Library for some time now where I came across some error detecting functions in the <cmath> and <cerrno> header files. The impression I got from the literature is that they are solely used in conjunction with functions contained in the <cmath> header file and not necessarily with fundamental arithmetic operations like addition and subtraction.

I need a means to know when my arithmetic operations generate overflows/underflows! Is there any way I can adapt the functionalities of these functions to my needs?

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C++ :: Expecting Stack Overflow Error?

Jun 9, 2013

After not programming for sometimes I decided to program a small application. But I have some trouble according to what I remember and re-checking arrays online. I don't understand how the code I wrote below is possible, shouldn't give a stack overflow error or something to that extent? Instead it gives me the value of 3.

#include "stdafx.h"
#include<iostream>
int _tmain(int argc, _TCHAR* argv[]) {
int arr2 [2];
arr2 [3] = 3;

[Code] ....

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C :: Stack Overflow - Expected Expression Error

Sep 10, 2013

I'm pretty new to C, and keep getting an error. Basically I'm trying to convert a ppm image to all red. Here is my code that I can't get to work:

Code:
change(pixel_t *PIXEL, &w, &h,pixel_t *buffer);

And here is the beginning of my convert function:

Code:
void change(pixel_t *pixel, int w, int h, pixel_t *buffer) {

int average, sum;
int i;
pixel_t *pointer;

Everything else works fine. I keep getting an error when I call the convert function. It says "expected expression before pixel_t" and "too few arguments to function "change". I know that everything else in the main is working.

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C :: Preventing A Buffer Overflow When Strings Being Passed As Arguments

Sep 21, 2013

preventing a buffer overflow when dealing with strings being passed as arguments.

If I have a function prototype such as:

Code:

void foobar(char *bar);

That argument bar - is intended to take a pointer to a buffer of x characters in length. Inside that function, I can't get the size of that buffer, as bar is now just a pointer to a char. I COULD just make the user of this function pass a length parameter, but there is no guarantee that would be correct. Is there a bullet proof way of detecting that the user has provided a buffer that is too small?

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C++ :: Deal With A Failed Input Stream And Type Checking Input?

Jun 17, 2014

deal with a failed input stream and type checking input?

I use:

cout << "
Enter a menu option: ";
while(!(cin >> menuGameMode))
{
cin.clear();
while (cin.get() != '
')
continue;
cout << "Enter a menu option: ";
}

Is this the "Best" way to do it?

EDIT: We're assuming input is expecting an int.

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C++ :: Insert Function In Binary Tree - Stack Overflow Error

Mar 26, 2013

I am trying to implement the insert function of a binary tree. Atm when I try and insert 3 nodes, the program breaks and gives me a stack overflow error. The error points to a getter function for an identifier for the data in my node class.

void LinkedList::add(Product *myProduct) {
if (_length==0) {
_head = new Node(NULL, NULL, myProduct);
_end = _head;
_length=1;

[Code] ....

Here is my insert function, the error message is

"An unhandled exception of type 'System.NullReferenceException' occurred in SDI2.exe
Additional information: Object reference not set to an instance of an object. "

In my main I have declared an instance of product, "productToAdd = new Product(id,idPrice);" so I'm a bit confused as to what I need to include..

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C++ :: Floating Point Error - Overflow (abnormal Program Termination)

Apr 22, 2012

Why I have a

HTML Code:

FLOATING POINT ERROR: OVERFLOW
ABNORMAL PROGRAM TERMINATION

in the code below?

Code:
#include<stdio.h>
#include <math.h>
#include<conio.h>
#define A 0
#define B 1
float F(float x0, float y0) {
return (0.2*x0)+(y0*y0);

[Code] .....

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C++ :: Floating Point Error - Overflow / Abnormal Program Termination

May 8, 2012

What is wrong with this code? I keep getting

HTML Code:
FLOATING POINT ERROR: OVERFLOW
ABNORMAL PROGRAM TERMINATION

Code:
#include<stdio.h>
#include<math.h>
#include<conio.h>
#include<iostream.h>
#define N 4
float x[5]={0, 1, 2, 3, 4};
float y[5]={0.5, 2, 7.5, 20, 42.5};

[Code] ....

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