[Solved] You want to write a script that prints "Positive" if a number is greater than zero, "Zero" if it is zero, and "Negative" otherwise. Which of these scripts correctly implements this using elif? | Bash Scripting

Bash Scripting - Conditionals

You want to write a script that prints "Positive" if a number is greater than zero, "Zero" if it is zero, and "Negative" otherwise. Which of these scripts correctly implements this using elif?

A#!/bin/bash num=5 if [ $num -gt 0 ]; then echo "Positive" else echo "Zero" else echo "Negative" fi

B#!/bin/bash num=5 if [ $num -gt 0 ]; then echo "Positive" else if [ $num -eq 0 ]; then echo "Zero" else echo "Negative" fi

C#!/bin/bash num=5 if [ $num -gt 0 ]; then echo "Positive" else if [ $num -eq 0 ]; then echo "Zero" else echo "Negative" fi fi

D#!/bin/bash num=5 if [ $num -gt 0 ]; then echo "Positive" elif [ $num -eq 0 ]; then echo "Zero" else echo "Negative" fi

Step-by-Step Solution

Solution:

Step 1: Check correct use of elif
#!/bin/bash num=5 if [ $num -gt 0 ]; then echo "Positive" elif [ $num -eq 0 ]; then echo "Zero" else echo "Negative" fi uses elif correctly to check the second condition.
Step 2: Identify errors in other options
#!/bin/bash num=5 if [ $num -gt 0 ]; then echo "Positive" else if [ $num -eq 0 ]; then echo "Zero" else echo "Negative" fi uses invalid "else if" syntax; #!/bin/bash num=5 if [ $num -gt 0 ]; then echo "Positive" else if [ $num -eq 0 ]; then echo "Zero" else echo "Negative" fi fi nests if inside else correctly but is more complex; #!/bin/bash num=5 if [ $num -gt 0 ]; then echo "Positive" else echo "Zero" else echo "Negative" fi has two else blocks which is invalid.
Final Answer:
Script with elif -> Option D
Quick Check:
Use elif for multiple conditions [OK]

Quick Trick: Use elif for multiple conditions, not else if [OK]

Common Mistakes:

MISTAKES

Using else if instead of elif
Multiple else blocks
Not closing nested if with fi

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More Bash Scripting Quizzes

You want to write a script that prints "Positive" if a number is greater than zero, "Zero" if it is zero, and "Negative" otherwise. Which of these scripts correctly implements this using elif?

Step 1: Check correct use of elif

Step 2: Identify errors in other options

Final Answer:

Quick Check:

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