Expert Advisor Programming by Andrew R. Young

EXPERT ADVISOR PROGRAMMING
Multiple statements must be enclosed in braces.
The else operator evaluates an alternate condition, provided that the previous if statement(s) are
false. You can combine else and if to create an alternate condition that will only be executed if it's
true.
For example, this code evaluates three conditions in order. If one of them is true, only that block of
code will be executed. If none of them are true, none of them will be executed:
if(Condition1 == true) // Execute condition 1
else if(Condition2 == true) // Execute condition 2
else if(Condition3 == true) // Execute condition 3
The else operator can be used by itself at the end of an if-else sequence to indicate a condition
that will be executed by default if all of the other if operators are false. As above, only one of the
conditions will be executed:
if(Condition1 == true) // Execute condition 1
else if(Condition2 == true) // Execute condition 2
else
{
// Execute condition 3 if 1 and 2 are false
}
If you have multiple if operators without any else operators, each one will be executed if it is true –
it doesn't matter whether the subsequent if statement is true or false:
if(Condition1 == true) // Execute condition 1
if(Condition2 == true) // Execute condition 2
Relation Operations
We begin evaluating true and false conditions by comparing values using greater than, less than,
equal to, not equal to and so on. Here's a list of relation operations:
• == Equal To – If x == y, the condition is true.
• > Greater Than – If x > y, the condition is true.
• < Less Than – If x < y, the condition is true.
• >= Greater Than or Equal To – If x >= y, the condition is true.
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