Linux Bash Arithmetic Expressions Question:
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What is the output of this program?
#!/bin/bash
a=10
b=$(( $a<0?10:$a<100 ))
echo $b
exit 0
a) 10
b) 20
c) 1
d) 0

Answer:

c) 1
Firstly the '$a<0' condition has been checked. Because it is false hence the right hand side condition of the colon (:) has been checked and this is true so program output is 1.

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Previous QuestionNext Question
What is the output of this program?
#!/bin/bash
a=10; b=20
c=$((++a))
let a=c+a
echo $a
exit 0
a) 21
b) 22
c) program will generate an error message
d) none of the above
What is the output of this program?
#!/bin/bash
a=10
b=$(( $a<0&&$a<100 ))
echo $b
exit 0
a) 10
b) 0
c) 1