C / C++ / MFC

toxcct wrote:

it's because you're using a List control...

DavidCrow wrote:

How did you infer this?

DavidCrow wrote:

Isn't Addstring() for listboxes?

class T {};
 
std::vector<T> v = vector<T>();    //capacity = 5, lenght = 0
v.pushback(T());                   //capacity = 5, lenght = 1
v.pushback(T());                   //capacity = 5, lenght = 2
v.pushback(T());                   //capacity = 5, lenght = 3
v.pushback(T());                   //capacity = 5, lenght = 4
v.pushback(T());                   //capacity = 5, lenght = 5
v.pushback(T());                   //capacity = 10, lenght = 6
v.pushback(T());                   //capacity = 10, lenght = 7
v.pushback(T());                   //capacity = 10, lenght = 8
v.pushback(T());                   //capacity = 10, lenght = 9
v.pushback(T());                   //capacity = 10, lenght = 10

toxcct wrote:

when you insert of delete elements in the middle of the container

George_George wrote:

It should be "when you insert or delete elements in the middle of the container"? A typo?

double x = 345.2214455;<br />
char szBuffer[255];<br />
sprintf(szBuffer,"%.4f",x);

piul wrote:

2.0024334 and 2.0024992 should be seen as equal because the first 4 decimals are the same.

double x = 2.0024334;
double y = 2.0024992;
const double EPS = .0001;
if ( fabs(x-y) < EPS )
{ // the numbers are equal within give precision
  //...
}
else
{ // the numbers are different
  //...
}

double x = 345.2214455;
x = floor(x * 10000)/10000;

double x = 345.2214455;
x = ((int)( x * 10000)) / 10000.0;