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assuming str is of type 'string', str[i] is of type 'char'. chars will be considered negative whenever the top bit is set. It's not an issue if you are bitwise ORing, as you will get the correct...

Not quite. Distance of 1 from (0,0) heading 45^ will be (0.707, 0.707)


Where did you get this formulae? Travelled distance is not proportional to heading. try dx = distance * cos(heading / 180....

ummm....

google seems to quickly turn up a bunch of results for this question, e.g. http://www.cppreference.com/wiki/operator_precedence
You're right, division/multiplication/modulus all have...

include the dll.h header, and not the project3.dll file.

Make an import library - the .lib file, should be an option in your compiler/linker

link the .lib file into your project. The program...

If you're just displaying the reversed thing to the screen, there is no need to store any numbers in any arrays.

Each call to the function will print out a single digit (the digit of number in the...

Line 20 should be moved to after line 24: you want to let the user enter the search value before you call the search function.

line 86: remove this line - the break statement would quit the loop;...

setw works fine without the need for '\t'. Note that setw is required prior to each item to be formatted.

e.g. cout << left << setw(12) << "item1" << setw(12) << "item2" << endl;

You would only scan to the left if a more-right digit couldn't be incremented - in which case you would try to increment a digit to the left. When you find a digit that can be incremented, you would...

Obviously recursion would enable a simpler/cleaner approach, if it were allowed.

There is no mention of need for speed/efficiency in the problem statement, so it may be perfectly valid to just use...

just copy all the string data into a temporary buffer and pass it to the function. e.g.
main(){
vector<string> st;

st.push_back("test11g 1");
st.push_back("tes22ng 2");
...

Those macros are defined elsewhere in the makefile, and that line shows very little information about your specific problem. Post the whole makefile.

If you want the ints to be read only, make them const also (requires the following casting):

const vector<const int*> & getV() { return *(const vector<const int*>*)&myV; };

change the precision of the stringstream
stringstream c1;
c1.precision(100);
c1 << Total;
Replacing = c1.str();

Are you sure you googled it? There's about a billion relevant hits on 'setsupendstate'.

from the horses mouth:
http://msdn.microsoft.com/en-us/library/aa373201.aspx

BOOLEAN is true/false...

What language are you using to call the dll?? You said VB above (I assumed vb6), are you sure it's not VB.net or Visual Basic 2005/6/7/8?? vb6 successors have different data types to vb6 - I think...

You do need both the *.def file and use of _dllspec(__export) if you want clean names exported from the dll (at least in MinGW and VC++2008). Without the def file, you will export a function...

The VB declare statement should be:
declare function sum lib "example1.dll" (byval x as long, byval y as long) as long where example1.dll is the name of your dll file.

Please use code tags in future to make code more readable.

The error is due to top() returning a temporary reference, and you're trying to reference it as non-constant. You could use a const...

I'll be more specific:
// check:
for( int j = 0; j < Y; ++i )

or even what you've changed it to

for( int j = 0; j < Y; i++ )

for that matter.

You've got this sequence twice in your code - it's wrong both times. Also, you should check whether the map location exists before you access it - e.g. map[-1][-1] is not actually in the map[][]...

I have it at the following locations:

C:\Dev-Cpp\bin\dlltool.exe
C:\Dev-Cpp\mingw32\bin\dlltool.exe

But that's because I use dev-c++ (mingw) not VC++. You should be able to download it from...

Doesn't impdef extract the .def file for you?
so:
"e:\>bcf\bin\impdef lt360lib.dll > lt360lib.def"

will give you the .def file, then to make the import library (.a or .lib) use dlltool with the...

Correct, 1 for negative. See http://en.wikipedia.org/wiki/Twos_complement for how it's done

Both the member function declaration and definition will require the const modifier. This tells the compiler that the function is an 'inspector' function and will not modify anything in the object...

I've never heard of that kind of triangle. Are you sure it's a valid form?

Make sure you store the number of rows & cols of each matrix. This may be easier if you put them in a matrix class or struct.

e.g.

struct Matrix{
float *data;
int rows, cols;

...

Just swap the pointers, as long as nothing else is referencing any elements in the arrays. If there are other references/pointers pointing into the array then do something else - like the temporary...

You can use stringstreams, itoa or sprintf to convert your int to a string of chars.



The error would have been that you can't convert an int to a char _pointer_, not char. C++ doesn't...

put the srand(time(NULL)); in the main(), such that it is run only once.

As you have it, every time RandomNumber() is called, srand() is seeded with the same value - hence rand() returns the same...

I think you're mixed up a bit (or maybe I am). I'm assuming GetScore returns true if the user enters a valid number. You've got this correct.

I'm also assuming that GetScore is supposed to set...

Ancient Dragon just just told you. Set valid = true before the loop. In the loop, if you find a bad character, set valid = false. Never set valid = true inside the loop. This way, when the loop is...

You have many many errors in your code. Are there any errors in particular that you're having trouble understanding?


you don't need the line: BloodDonor bldDnr; or any reference to bldDnr
...

Polynomial addition is NOT exclusive-or; it's addition!

How is this right??

See:
http://www.purplemath.com/modules/polymult.htm

You'll probably want to use what they call 'vertical'...

Regarding the order for multiplication, an example:
m1 = 1.x^2 + 1.x^1 + 2, order 2
m2 = 1.x^3 + 1.x^2 + 1.x^1 + 2, order 3
r = 1.x^5 + 2.x^4 + 4.x^3 + 5.x^2 + 4.x + 4, order 5

notice...

Yes.

for(<init>; <condition>; <iterator>){
//...
}

<init>
while(<condition>){
//...
<iterator>

To check if an iterator has passed over all elements compare it to the end (for iterators) or rend (for reverse iterators).

string::reverse_iterator rit = st.rbegin();
string::iterator it...

Isn't the polynomial structure kinda similar to a vector??

What's wrong with defining Poly as derived from std::vector<double>?? It makes all the new/delete stuff go away, and looks neater and...

Why don't you try running the program and pressing the enter key. The program will display the code for the key. Then you can put the key code as a case in the switch() just like what has been done...

You'll probably want to run it in a loop - the code I gave only checks once for a keypress. so:

while(1){
[ insert the keychecking code I posted here...]
Sleep(1); // don't use 100% cpu...