need a bit help in C++

[Spartak]

Originally Posted by laurent

If you only have to count pieces what are the inner two loops "distance" doing? You only need two loops over x and y to count pieces.

I was tired and now I do realise that I described the task not clear enough.
The program is supposed to count all possible squares (1x1, 2x2 etc), which are empty

Originally Posted by Rottis

Maybe I didn't get the question, but the braintwister was the code you pasted.

Yes, because so is the assignment

[DarthShader]

for(int d=0;(d<SQR_SIZE-i-1)&&(d<SQR_SIZE-j-1); d++)

In this line both " -1 " are unnecessary. To see why imagine a board without any figures and start with left upper corner (0,0). Your code won't check if there is an empty square of size SQR_SIZE x SQR_SIZE.

[Spartak]

Originally Posted by DarthShader

for(int d=0;(d<SQR_SIZE-i-1)&&(d<SQR_SIZE-j-1); d++)

In this line both " -1 " are unnecessary. To see why imagine a board without any figures and start with left upper corner (0,0). Your code won't check if there is an empty square of size SQR_SIZE x SQR_SIZE.

I don't think you are a right, the matrix is defined as
field[SQR_SIZE][SQR_SIZE]

[DarthShader]

Yes and you use the "lower" operator in the for loop condition statement, so you need d to be lower than SQR_SIZE, to reach index SQR_SIZE - 1 which is the highest of the field, since we start counting at 0. Alternatively you could use "lower or equal" and keep the "-1".

For an empty checkboard of SQR_SIZE = 8, in the higher left corner, where (i,j) = (0,0) your algorithm should count 8 empty squares, so d should be allowed to go from 0 to 7 and it can't be 7 now since the for loop gets terminated.

[Spartak]

Ok I reverse my previous statement. You ARE right
It works at last! yahoo!

[Rottis]

Originally Posted by Spartak

I was tired and now I do realise that I described the task not clear enough.
The program is supposed to count all possible squares (1x1, 2x2 etc), which are empty

Yes, because so is the assignment

I couldn't derive that from description gives. 8)
I do remember school assignments being fairly stupid and ambiguous..

So much posting tired.

[Zizy]

To hijack a bit with a C problem.

Relevant part of code is:

printf("%f\n", 0.5);
if (bla[1] > 0) { printf("%f\n", 0.5); }
printf("%f\n", bla[1]);

First 2 lines work just fine, while for the third one bla[1] is written, but Valgrind throws a long list of errors (ca 50).
How come the problems appear only then, why not in the second one as well?

[Spartak]

Let's say given:

class My_class //which consists of:
{
private:
Subclass1 a;
Subclass2 b;
float f;
public:
My_class(Subclass1, Subclass2, float);//CTOR prototype
~My_class(); //DTOR
//methods
};
Question:
What the CTOR definition should look like, so the subclasses could be initialized concurrently with My_class?
i. e.
My_class(Subclass1('u', 8), Subclass2("ab", 98465), 3.5)

[Spartak]

what is the difference between template function and function template?