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  1. #!/bin/bash
  2. # your code goes here
  3. factorial_recursive() {
  4.   local n="$1"
  5.   if [ "$n" -lt 0 ]; then
  6.     echo "Factorial is not defined for negative numbers"
  7.     return 1
  8.   elif [ "$n" -le 1 ]; then
  9.     echo 1
  10.   else
  11.     local prev=$((n - 1))
  12.     local result=$(factorial_recursive "$prev")
  13.     echo $((n * result))
  14.   fi
  15. }
  16.  
  17. echo "enter a number"
  18. read num
  19. result=$(factorial_recursive "$num")
  20. echo "the factorial of the given number is $result"
Success #stdin #stdout #stderr 0.01s 5292KB
comments (?)
stdin
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Standard input is empty
stdout
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enter a number
the factorial of the given number is
stderr
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./prog.sh: line 5: [: : integer expression expected
./prog.sh: line 8: [: : integer expression expected
./prog.sh: line 13: Factorial is not defined for negative numbers: syntax error in expression (error token is "is not defined for negative numbers")
https://ideone.com/vHRq9E
language:
Bash (bash 5.0.3)
created:
3 days ago
visibility:
public

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