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| 1 | #!/bin/sh | |
| 2 | printf "Enter a number\n" | |
| 3 | read c | |
| 4 | x=$c | |
| 5 | s=0 | |
| 6 | while [ $x -gt 0 ] | |
| 7 | do | |
| 8 | - | r=`expr $x % 10` |
| 8 | + | s=(( s + x % 10 * x % 10 * x % 10 )) |
| 9 | - | s=`expr $s + $r * $r * $r` |
| 9 | + | |
| 10 | done | |
| 11 | if [ $s -eq $c ] | |
| 12 | then | |
| 13 | echo "It is an armstrong number" | |
| 14 | else | |
| 15 | echo "It is not an armstrong number" | |
| 16 | fi |
