MQL4 If-Else Conditional Operator
Overview
The if-else operator is used for conditional execution of code blocks.
Syntax
if (expression)
operator1
else
operator2;
Behavior
expression evaluates to true, operator1 is executed, and control proceeds to the statement following operator2.expression evaluates to false, operator2 is executed.Optional Else Clause
The else part can be omitted. When else is omitted in nested if statements, an else clause is associated with the nearest preceding if statement within the same block that does not have its own else clause.
Examples
**Example 1: Default else association**
// else refers to the second if
if(x > 1)
if(y == 2) z = 5;
else z = 6;
**Example 2: Grouping with braces**
// else refers to the first if
if(x > 1)
{
if(y == 2) z = 5;
}
else z = 6;
**Example 3: Nested if-else if**
if(x == 'a')
{
y = 1;
}
else if(x == 'b')
{
y = 2;
z = 3;
}
else if(x == 'c')
{
y = 4;
}
else
Print("ERROR");
Related Concepts
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