CODEWITHSUNDEEP
batch-file
John Hang
John Hang

Reputation: 125

What is the reason for error message "Missing Operator" on arithmetic expression?

Why do I get with the code below the error message:

Missing operator.

@echo off
set plvl=1
set pexp=0
set pexpend=100
set aiexp=10
set pexplvl2=3.1
if "%plvl%"=="1" set /a pexp=%pexp% + %pexpend% / %aiexp% * %pexplvl2%

Upvotes: 0

Views: 104

Answers (1)

Magoo
Magoo

Reputation: 80073

Batch mathematics is always in integers. Batch sees the . in 3.1 and complains because it is expecting an operator (+-/%*)

Try replacing 3.1 with 31/10 - but remember, the result will be truncated. There will be no decimals.

For example 29/10 produces 2 as result of the integer division and not 3 as a floating point division with result 2.9 and a subsequent rounding to nearest integer value would produce.

Upvotes: 2

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