Respuesta :
When the increment operator precedes its operand, as
++num, the expression is in prefix mode.
When the increment or decrement operator is placed before the operand ( to the operand's left), the operator is being used in prefix mode.
A prefix is defined by specifying its name with the name= keyword, its optional short name with the sname= keyword, optional input names with iname=, and the keyword prefix.
During an assignment of one variable to other the prefix mode of increment and decrement first increments or decrements the variable's value then updated value of the variable is used in assignment.
Postfix mode on the other hand is when the increment or decrement operator is placed after the operand (or to the oper and's right) .
Pre-increment, (for example, ++n) increments the value first, and then performs the specified operation.
Therefore, When the increment operator precedes its operand, as ++num, the expression is in prefix mode.
Learn more about prefix mode here:
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