why the value of them is zero

[Vaclav]

Dear expert:

I use history data of auto trade system to test the function,the value of RSV is zero,Please tell me why?

while(i>=0)

{

MaxHigh=High[iHighest(NULL,0,MODE_HIGH,nPeriod,i)];

MinLow=Low[iLowest(NULL,0,MODE_LOW,nPeriod,i)];

if (MaxHigh-MinLow != 0) RSV[i]=(Close[i]-MinLow)/(MaxHigh-MinLow)*100;

else RSV[i] = 50;

i--;

}

thanks!

[Vaclav]

If anyone can give me answer?

thanks!

[Ubzen]

What is RSV? Use print to check the value of i.

[Vaclav]

RSV is a buffer, if I set a element of it to a value, for example,

RSV[0] = 50,I print it, it displays 0, why?

[Simon Gniadkowski]

sniff:

RSV is a buffer, if I set a element of it to a value, for example,

RSV[0] = 50,I print it, it displays 0, why?

How did you declare the buffer/array ? is it a Buffer or an Array ? is this in an Indicator or an EA ?

[Vaclav]

it is a global variable

double RSV[];

[Simon Gniadkowski]

sniff:

it is a global variable

double RSV[];

OK, if it's not a Indicator buffer you have to define how many elements are in the Array, otherwise it has 0 elements and then all it's values . . . all 0 of them, are 0.

You need to do this . . .

double RSV[1000];  <------ adjust to the number you need or use ArrayResize()

[Vaclav]

Do you know how to get the value of array element?

thanks!

[Simon Gniadkowski]

sniff:

Do you know how to get the value of array element?

thanks!

Yes . . . arrayname[arrayelementnumber], note, first element number is 0

[William Roeder]

sniff:

RSV is a buffer, if I set a element of it to a value, for example,

RSV[0] = 50,I print it, it displays 0, why?

If it displays zero, how do you know it's 50?

[Vaclav]

thank your help, the value of RSV is correct.there is another question,please see the code.

double percentK[512];

double RSV[512];

limit=Bars-counted_bars;

if(limit > 512) limit = 512;

//---- signal line is simple movimg average

for(i=0; i<limit; i++)

{

percentK[i]=iMAOnArray(RSV,Bars,M1,0,MODE_SMA,i);

}

the percentK[i] value is -0,why?