[MQL4 Coding Help] How to write If-else sequence in MQL4

[shanmugapradeep]

Hello,

What is correct way to add if else statement.

TYPE 1 : If else sequence separately :

if (condition1) {
//Condition 1 task
} else {
if (condition2) {
//condition2 task
} else {
if(condition3) {
//condition3 task
} else {
//condition else task
}

TYPE 2 : Else if statement sequence :

if (condition1) {
//Condition 1 task
} else if (condition2) {
//condition2 task
} else if(condition3) {
//condition3 task
} else {
//condition else task
}

TYPE 3 : Else if statement with no space sequence :

if (condition1) {
//Condition 1 task
} elseif (condition2) {
//condition2 task
} elseif(condition3) {
//condition3 task
} else {
//condition else task
}

 

[hayseed]

Hello,

What is correct way to add if else statement.

}[/CODE]

//------

you can use the comb function in the editor...... it will sort out the code in a more professional look.......

here is a page from the mql4 book on nested operations......h
//-------

 

[shanmugapradeep]

here is a page from the mql4 book on nested operations......h

Thanks for this URL. So, type 2 is correct statement for nested if else.

comb function in the editor

And also thanks for this tip. I did not know about it 🙂

 

[hayseed]

Thanks for this URL. So, type 2 is correct statement for nested if else.


And also thanks for this tip. I did not know about it 🙂

//-----

quite often i will search the mql book...... it is a searchable pdf.......

nested functions are on page 7 and 8......h
//------

 

[Enivid]

TYPE 1 : If else sequence separately :

This won't compile because you have two unbalanced parentheses there:

if (condition1)
{
//Condition 1 task
}
else
{
    if (condition2)
    {
        //condition2 task
    }
    else
    {
        if(condition3)
        {
            //condition3 task
        }
        else
        {
            //condition else task
        }

TYPE 2 : Else if statement sequence :

This will work fine (and will work similarly to the switch operator):

if (condition1)
{
    //Condition 1 task
}
else if (condition2)
{
    //condition2 task
}
else if(condition3)
{
    //condition3 task
}
else
{
    //condition else task
}

TYPE 3 : Else if statement with no space sequence :

MetaTrader doesn't know the elseif statement. You should put a space there.