Multidimensional on the Second Dimension

[Louis Stoltz]

Hi

I see that mql4 has ArraySort and ArrayBSearch but all these only work on the first dimension.

Here is an example array and what I want to accomplish

array[0][0] = 100;
array[0][1] = 1;

array[1][0] = 400;
array[1][1] = 2;

array[2][0] = 200;
array[3][1] = 3;

I want to get the highest value 400 and print it out like this:
" 400 on 2 "

Another question: Do I have to specify the size of an array like this everytime "int array[50];" , I might not know the size.

Happy hOlidays

[Rashid Umarov]

bonechair:

Another question: Do I have to specify the size of an array like this everytime "int array[50];" , I might not know the size.

See ArrayResize

[Ray]

"Do I have to specify the size of an array like this everytime "int array[50];" , I might not know the size."

To allocate memory for the array, you have to give it a size either in the declaration. ..

double myArray[100];

or before using it...

double myArray[]; // no size declared

...

ArrayResize(myArray, 100);

or

int sizeNeeded = someCalculation;

ArrayResize(myArray, sizeNeeded);

If you don't allocate memory for the array, it might work, it might work oddly, it might crash the program.

[Louis Stoltz]

Hi thanks Guys, any ideas on my first question?
Is it possible todo that in mql4?

[Louis Stoltz]

So I'm guessing this not possible? First Question???

[Rashid Umarov]

You can read size of second dimension but can not set it. See ArrayRange().

[[Deleted]]

I have some problem..

how to print out two array ?? (like the first case)

array[0][0] = 100;
array[0][1] = 1;

array[1][0] = 400;
array[1][1] = 2;

array[2][0] = 200;
array[3][1] = 3;

how to print out high value "400,2" ??

[[Deleted]]

Hello ??? its imposible ??

[Rafael]

disyon wrote >>

Hello ??? its imposible ??

You can make function with simle loop:

max = 0; // or ..

for (i=0; i<sizeofarray; i++) {

if (array[i][0] > max) {

max = array[i][0];

indmax = i;

}

}

Print(array[indmax][0], array[indmax][1]);