Pascal to C++ 2 functions

all right I’m trying to convert this Pascal code to C++ witch i can do i just need help with 2 functions

here is the Pascal code

Code:

//Returns the amount Of pixels between a1, b1 And a2, b2


Function Dist(a1, b1, a2, b2 : Integer) : Integer;
Var
  aa, bb : Extended;
Begin
  If(a1>a2)Then
    aa:= (a1 - a2) * (a1 - a2)
  Else
    aa:= (a2 - a1) * (a2 - a1);
  If(b1>b2)Then
    bb:= (b1 - b2) * (b1 - b2)
  Else
    bb:= (b2 - b1) * (b2 - b1);
  result:= trunc(Sqrt(aa + bb)) + 1;
End;

ok now i need help with a trunc function in C++ what it does i believe is takes away the decimal point from any number.
and the sqrt function witch is square root.

ok now i need help with a trunc function in C++ what it does i believe is takes away the decimal point from any number.

Casting to an integral type will result in truncation.

and the sqrt function witch is square root.

sqrt() is available in <cmath>

> ok now i need help with a trunc function in C++ what it does i believe is takes away the decimal point from any number.
Just cast it to an integral type such as int:

result = 1 + static_cast< int >( sqrt( aa + bb ) );

>and the sqrt function witch is square root.
#include <cmath>
std::sqrt( double n );

thank you

also if you guys coud answer this one

Code:

if (GetAsyncKeyState(VK_ESCAPE))
{
exit(0);
}

Now if I press the ESC button the then the program should stop right. But it seams to stop even when I haven’t pressed the button.

lol and thanks laserlight your always answering my posts I appreciate it.

Originally Posted by MSDN

If the function succeeds, the return value specifies whether the key was pressed since the last call to GetAsyncKeyState, and whether the key is currently up or down. If the most significant bit is set, the key is down, and if the least significant bit is set, the key was pressed after the previous call to GetAsyncKeyState. ....

-->> it never retuns 0.
Kurt

Correct, you need to do an "and with 1" to see if the key was pressed or not.

--
Mats

ok so the way i have it now it is returning true no matter what because it never returns 0
can some one leave an example of how it shoud be frased. thanks for you help i see how it works now anyway : )

Code:

if (GetAsyncKeyState(VK_ESCAPE) & 1)
{
exit(0);
}

--
Mats