Posts by gerard4143

Or posting in the wrong section?

C++ is a play on the C programming language increment operator. C++ literally means C language incremented.

What's the purpose of it? Here check the wiki

http://en.wikipedia.org/?title=C%2B%2B

Yes, you will searching for the element contained in the array std. If you need to search id in the array std then you could loop through std and check each id.

size_t i = 0;

for (; i < 100; ++i)
{
    if (std[i].id == some_int)
    {
        //do something here
    }
}

Well this is how you access an element of std[100] and get its elements.

std[searchid].id
std[searchid].name
std[searchid].fatherName
std[searchid].motherName

If you insists on breaking out of the loop immediately then you should use break.

Something like this...

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
    int employeeNumber = 0;

    while( true )
    {
        cout << "\nEmplyee Number: ";
        cin >> employeeNumber;
        cout << endl;

        if ( employeeNumber == 0 ) break;

        while( true )
        {
            cout << "Inner loop\n";
            //do something here
        }
    }
    cout << "Done" << endl;
    return 0;
}

If you want to save yourself some frustration then don't include this in your header file

using namespace std;

Header files shouldn't expose anything in a namespace.

This forums provides help to users who have specific questions. It isn't a free programming advice column.

Could you elaborate on your question?

I would have to say that you need a flagging system which marks a integer element when its been counted.

Are you sure this is C?

for(int i = 0; i < 10; i++)
{
...
}

Looking at your code I find that you have to make a decision. Do you want to calculate the average once and store the value in the structure Student or do you want to calculate the student average each time you need it.

void Print_List(Student List[], int Size)
{
    cout <<left << fixed << setprecision(2) <<showpoint <<endl ;
    cout << setw(19) << "Name" 
    << setw(18) << "ID" 
    << setw(18) << "Average" 
    << setw(16) << "Grade" << endl;

    cout << "=============================================================" << endl;

    for(int i = 0; i < Size;i++)
        cout << setw(19) << List[i].LastName +", "+ List[i].FirstName
        << setw(18) << List[i].Id 
        << setw(20) << calcAverage(List[i])//I use the return value here but it also stores the result in student
        << List[i].Grade << endl;
}

Then pass it as a reference.

Something like this

#include <iostream>
#include <string>

void replaceAll(const std::string & oldString, const std::string & newString, std::string & original)
{
    size_t n = 0;
    while ((n = original.find(oldString, n)) != std::string::npos)
    {
        original.replace(n, oldString.size(), newString);
        n += newString.size();
    }
}
int main(int argc, char** argv)
{
    std::string foo("T44 T44 T44 bar");

    replaceAll("T44", "4/4", foo);

    std::cout << foo << std::endl;

    return 0;
}

The GCC compiler has a switch -std which can determine the language standard.

Try searching this link for the -std switch options.

http://linux.die.net/man/1/gcc

You two errors on line one

for (index = 1; index < SIZE; ++);

for (index = 1; index < SIZE; ++index)
{...}

I would go with an array of structures

struct personal
{
    std::string name;
    std::string phone;
    std::string DOB;
};

personal per[10];

You could try something like this:

void check_string(const std::string str) { std::cout << "Got->" << str << std::endl; }

void print_actors_movies(treePtr root, const std::string name)
{
  if(root == NULL) return;

  if (root->left) print_actors_movies(root->left, name);

  std::for_each(root->actors.begin(), root->actors.end(), check_string);

  if (root->right) print_actors_movies(root->right, name);
}

I'll leave it to you to check if the name matches.

int chdir(const char *path);

You can use chdir() which is in the unistd.h header file.

No, I want to inistialize the vector from inside the constructor initialization list the goal is not to use the constructor body too, only from the list

I thought I was doing that in my example.

Here's a correction implementing some of the changes mentioned above

#include <iostream>

class Base
{
public:
  Base() {}
  ~Base() {}
  void doSomrthing() {}
};

class MyCLass : public Base
{
  std::string name;
public:
  MyCLass();
  ~MyCLass();
  void init();
};

MyCLass::MyCLass()
{
  init(); //runtime error occurs with this line
}

void MyCLass::init()
{
  name = "MyClass";
  doSomrthing();
}

int main()
{}

Could it be this

Class

Please note the uppercase C

Or could it be the missing semi-colon here

class Base
{
  Base();
  ~Base();
  void doSomrthing();
}

Or here

Class MyCLass : public Base{
std::string name;
MyCLass();
~MyCLass();
void init();
} 

Are you having problems with the ternary operator?

http://msdn.microsoft.com/en-us/library/e4213hs1%28v=vs.71%29.aspx

Since your using warnings and strict you should use my.

my $filesize = -s $filename;

Should you be using \ here

"C:\Users\bt\Desktop\perl_files";

Shouldn't it be

"C:/Users/bt/Desktop/perl_files";

I think you can the rest here

http://perldoc.perl.org/functions/-X.html

This link will show you how to get file size

http://perlmeme.org/faqs/file_io/filesize.html

You'll have to elaborate on date. Do you mean creation data or last accessed date or last modified date?

Try this

my @files = sort { $a cmp $b } readdir(DIR);

I tried this and it worked.

#!/usr/bin/perl

use strict;
use warnings;

my $dir = 'directory_path';

opendir(DIR, $dir) or die $!;

foreach( sort { $a cmp $b } readdir(DIR))
{
        next if (/^\./);
        print $_,"\n";
}

closedir(DIR);
exit 0;

A pointer is just a variable, so coping a pointer into a pointer is done just like you showed.

    char *name1; 
    char *name2; 

    name2 = name1;

Now both name2 and name1 point to the same memory area.

Triy this link on va_arg

http://www.cplusplus.com/reference/clibrary/cstdarg/va_arg/

On line 27 you have a semi-colon

else if (s[n] == 12); { 

I think that's your problem

Well the first thing you'll have to do is determine page size on your computer. Then you could try something like below.

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

#define MY_PAGE_SIZE 4096

int main(int argc, char** argv)
{
    unsigned long addr = (unsigned long)&main & ((0UL - 1UL) ^ (MY_PAGE_SIZE - 1));
    void * ptr = (void*)addr;/*ptr aligned on page*/
    
    return (EXIT_SUCCESS);
}

Well 9 divides into 1 zero times with 1 left over.

The error message tells it all. The case needs to be a constant...Like

1,2,3,4,5...or

#define one 1
const unsigned long two 2;

switch(angle)
{
case:1
{}
case:two
{}
}

try

std::vector<Rab> items;

Sure:

size->4
size->4
size->0022FF4C
size->2293580

~G

I just wanted to make sure you weren't truncating anything..

Now lets look at

int * p3 = "47352";//assign to pointer p3, the pointer that points to "47352"

Unknown (with asterisk): 892548916

*p3 produces 892548916

now 892548916 has a hex value of 0x35333734 which has ascii values

0x35 = '5'
0x33 = '3'
0x37 = '7'
0x34 = '4'

notice that p3 points to "47352" which is an int pointer and int are four bytes on your system so your getting the first four characters of the string "47352".

For your first function try something like below:

int toNumber(char c)
{
  switch (c)
  {
	case '0':
	  return 0;
	case '1':
	  return 1;
	case '2':
	  return 2;
	case '3':
	  return 3;
	case '4':
	  return 4;
	case '5':
	  return 5;
	case '6':
	  return 6;
	case '7':
	  return 7;
	case '8':
	  return 8;
	case '9':
	  return 9;
	default:
	  return -1;
  }
  return 0;
}

For your second function, what constitutes a space?

Try something like this

#include <iostream>

class test {
    public:
        int* num;
    };

int main() {
    test *d = new test;
    d->num = new int;
    *(d->num) = 3;
  std::cout << *(d->num);
}

That's a new one 'enum operator'. What's that?

Do you mean something like below?

#include <iostream>

enum colour {red, green, blue};

std::ostream& operator <<(std::ostream & out, const colour & c)
{
  switch (c)
  {
	case red:
	  return out << "red";
	case green:
	  return out << "green";
	case blue:
	  return out << "blue";
  }
  return out;
}

int main()
{	
	
	colour favourite;
	favourite = green;

	std::cout << favourite << std::endl;

	return 0;
}

Take a look at this function call

curve = Curve(info, i);

Your passing i = 0 and what do you think will happen in this function when n = 0?

int Curve(Grades g[], int n)
{
int avg, curve, i, data;
int sum = 0;
int count = 0;

for (i = 0; i < n; i++)//n = 0
{
data = g[i].grade;
sum = sum + data;
count++;//never reach this
}

avg = sum / count;//what happens here? count = 0

curve = 75 - avg;

return curve;
}

Have a read on the scope resolution operator ::

http://publib.boulder.ibm.com/infocenter/comphelp/v7v91/index.jsp?topic=%2Fcom.ibm.vacpp7a.doc%2Flanguage%2Fref%2Fclrc05cplr175.htm

If your still having problems try looking at the problem like this:

printf("%s",p + ('E' - 'A'));

Sure we'll help fast as soon as you post what you have fast.

Try looking at it like this:

printf("%s",p + (p[3] - p[1]));

or like this:

printf("%s",&p[4]);

Here's a good example hitting the high points of your question.

http://www.metalshell.com/source_code/89/Variable_Argument_List_Example.html
http://msdn.microsoft.com/en-us/library/kb57fad8.aspx

You can always use try-catch blocks to catch the exception. But in this cases of yours it seems not to need one.
If your method has a return type, you have to return this type in any place in the Sum method. Otherwise the compiler will throw an error.
You can do it:

private void YourMethod()
        {
            int a = -2;
            int b = 3;
            int c = Sum(a, b);
            if (c > 0)
            {
                //Ok!!
            }
            else
            {
                //show a message if needed
                //that some of values are negative
            }
        }

        public int Sum(int a, int b)
        {
            if (a < 0 || b < 0)
            {
                return 0;
            }
            else
            {
                return a + b;
            }
        }

Just a quick question. What happens to your logic when both numbers(a and b) are zero?

Here's what I was suggesting when I mentioned using unsigned integers for parameters

using System;

namespace testit
{
	class MainClass
	{
		public static void Main (string[] args)
		{
			UInt64 x = 0, y = 0;
			bool loop = true;
			
			while (loop)
			{
				try
				{
					Console.Write("Enter value a->");
					x = UInt64.Parse(Console.ReadLine());
					Console.Write("Enter value b->");
					y = UInt64.Parse(Console.ReadLine());
				}
				catch (Exception ex)
				{
					Console.WriteLine(ex.Message);
					continue;
				}
				loop = false;
			}
			
			Console.WriteLine(sum_them(x, y));
		}
		
		public static UInt64 sum_them(UInt64 a, UInt64 b)
		{
			return a + b;
		}
	}
}

Your function prototype is incorrect..You have

int giveMemoryBack (CDROM int *pCDROM1, int *pCDROM2, int *pCDROM3)

and it should be

int giveMemoryBack (CDROM *pCD1, CDROM *pCD2, CDROM *pCD3)
{
delete pCD1;
delete pCD2;
delete pCD3;
return 0;
}

and calling your function should be

// Call giveMemoryBack function
giveMemoryBack(pCDROM1, pCDROM2, pCDROM3);

I tried something in your code and it seems to work. I essentially knocked the x value back by one if an exception is thrown...

sing System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Exceptional
{
    class WorkerTest
    {
        static void Main(string[] args)
        {
            Worker[] workerArray = new Worker[2];

            int workerID;
            double hrSal;
			
            for (int x = 0; x < workerArray.Length; x++)
            {
                try
                {
			loadId(x, out workerID);
			loadSal(x, out hrSal);

                    workerArray[x] = new Worker(workerID, hrSal);//only reach here if no exceptions thrown
                }

                catch (Exception e)
                {
                    Console.WriteLine(e.Message);
			--x;//knock counter back by one and start again.
                }

            }
            Console.WriteLine();
            for (int i = 0; i < workerArray.Length; i++)
            {
                Console.WriteLine("Worker # {0} \nHourly salary {1}\n--------\n ", workerArray[i].workerID, workerArray[i].hrSal.ToString("C"));
            }
        }
		private static void loadSal(int position, out double val)
		{
			Console.Write("Input an hourly Salary for the worker[{0}]: ", position);
            val = Convert.ToDouble(Console.ReadLine());
			
			if (val < 5.0 || val > 55.0)
			{
				throw new ArgumentException("Unexpected Salary Range.");
			}
		}
		
		private static void loadId(int position, out int val)
		{
			Console.Write("Input a work identification number for worker[{0}]: ", position);
            val = Convert.ToInt32(Console.ReadLine());
		}
    }

    class Worker
    {
        public int workerID;
        public double hrSal;

        public Worker(int WorkerID, double HrSal)
        {
            workerID = WorkerID;
            hrSal = HrSal;
        }
    }
}

I just copied and ran your program and it worked.

Line 97. What is this

if(s[i].sMaxCap <= h[0,1,2,3,4,5,6,7,8,9].maxCap)

In your for statement

for(i = 0; i < 10; i++) {
printf("value, deference pointer, address \n");
printf("pointer1 = %p, *pointer1 = %d, &pointer1 = %p\n", pointer1, *pointer1, &pointer1);
pointer1++;//this line should go last
}

Or better yet.

#include <stdio.h>

int main(void) 
{
	int values[10] = {1,2,3,4,5,6,7,8,9,10};
	int *pointer1;
	pointer1 = values;

	while ( pointer1 < &values[10] )
	{ 
	  fprintf(stdout, "address->%p, value->%d\n", (void*)pointer1, *pointer1);
	  ++pointer1;
	}

	return 0;
}

Because the data member is const the = operator can't change its value. So using the = operator on any objects from this class will cause an error.

Your = operator is defined ~ like so

A& A::operator =(const A & obj)
{
if (this != &obj)
{
a = obj.a;//fails here since a is const
}
return *this;
}

try

float.TryParse(txtInitialTemp.Text, out temp)

what all should i include to make it look decent?

A lot of work....