[WARNING CLOSED!] Any newbie question, so as not to clutter up the forum. Professionals, don't go by. Can't go anywhere without you. - page 346

 
apologies
 
Stepan241 >> :

At the beginning of the script you write

#property show_inputs

extern double Lot=0.1

After that, when the script is attached to the symbol window, a dialog box will appear.

I understand. But that's not what I need. With these commands a dialog box will appear - with general EA settings and current script settings, and I asked if there is no such function, which could be used to output DO ONLY with the script settings at once.

 
Can you tell me how to make all open orders close at the specified time?
 
JackaLrus писал(а) >>

I understand. But that's not what I need. With these commands a dialog box will appear - with general EA settings and current script settings, and I asked if there is no such function, which could be used to output DO ONLY with script settings at once.

Only MetaEditor then.

 
vik-777 >> :
Could you please advise how to close all open orders at a specified time?

if (HourTime[0]=12)_CloseAllOrder

See the _CloseAllOrder function on the previous page or the page before

 
Stepan241 >> :

if (HourTime[0]=12)_CloseAllOrder

for the _CloseAllOrder function itself, see last page or the page before

Thank you, the function is very handy

 

Dear Experts,

Please advise what is the reason for this result:

gist:

int start()
{
//----
double c;
int q;
c=0.3/0.1;
q=c;
Print("c=",c," q=",q);
//----
return(0);
}

it prints "c=3 q=2"

question: how does it get two out of three?

the thing is, if I replace 0.3 with 0.4 or any other fraction, it solves the problem as intended

for example

int start()
{
//----
double c,v;
int q,w;
c=0.3/0.1;
v=0.4/0.1;
q=c;
w=v;
Print("c=",c," q=",q," v=",v," w=",w);
//----
return(0);
}

"c=3 q=2 v=4 w=4"

Question: how does it get two out of three?

try to compile, maybe my computer can't count (just silly...)

 
mukata >> :

Dear Experts,

Please advise what is the reason for this result:

gist:

int start()
{
//----
double c;
int q;
c=0.3/0.1;
q=c;
Print("c=",c," q=",q);
//----
return(0);
}

it prints "c=3 q=2"

question: how does it get two out of three?

the thing is, if I replace 0.3 with 0.4 or any other fraction, it solves the problem as intended

for example

int start()
{
//----
double c,v;
int q,w;
c=0.3/0.1;
v=0.4/0.1;
q=c;
w=v;
Print("c=",c," q=",q," v=",v," w=",w);
//----
return(0);
}

"c=3 q=2 v=4 w=4"

Question: how does it get two out of three?

Try to compile it, maybe my computer doesn't know how to calculate (it's silly...)


It's not nonsense, just a common rounding error when working with real numbers.

In the first case for example c equals 2.999999999, the output is rounded, i.e. 3, but when assigning to an integer type the fractional part is discarded.

 
splxgf >> :

This is not nonsense, common rounding errors when dealing with real numbers.

In the first case, for example, c equals 2.99999999999...

how can 2.99999999 be 2.9999? 0.3/0.1=3 exactly, it's not like I'm dividing 1 by 3 and it should be 0.33333...

but when assigning to an integer type, the fractional part is discarded.

An integer type is assigned a value c, with is clearly equal to three, without any fractional parts. There's nothing to discard...

The answer is 100% wrong.

any other options?

 
mukata >> :


I don't see how 2.9999 can be 2.9999? 0.3/0.1=3 even, it's not like I'm dividing 1 by 3 and it should be 0.33333...


This only appears to be exactly, while the machine representation can take different values. I.e. 2.9999, 3 or 3.00000001


To get rid of such misunderstandings, MQL has the NormalizeDouble() function