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# What is mathematical Operator Precedence In programming languages ?

3 Answers

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.. precedeces means to come before
operator precedence means
to decide which operator to evaluate first
_ example _
1+2*4-3
the program needs to know if it does
1+2 first or 2*4 ?
in such a case we define rule such that
we evaluate * first
1+(2*4)-3
1+2-3
0
the language makers defined it so that
the program does not become confused
it is normally evaluated in terms of priority :
P E M D A S
P arenthesis
then
E xponential
then
M ultiplication
then
D ivision
then
A ddition
then
S ubstraction
there is also another precedence
left-to-right precedence
we tell the program to begin from the
left when parsing expressions

+ 2

hi,
refer the below link to know more about operator precedence and associativity
http://cs-fundamentals.com/java-programming/java-operators-precedence-and-associativity.php
if u know these then u will able to solve any expression.

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