Difference between revisions of "CSC231 Final Exam Fall 2017"
| Line 55: | Line 55: | ||
<br /> | <br /> | ||
<br /> | <br /> | ||
| + | =Solutions= | ||
| + | ==Bash Script== | ||
| + | <br /> | ||
| + | ::<source lang="bash"> | ||
| + | #! /bin/bash | ||
| + | # funcMoodleChallenge.sh | ||
| + | # D. Thiebaut | ||
| + | # uses a recursive function to compute the factorial of | ||
| + | # a positive integer. The integer is passed on the command | ||
| + | # line. | ||
| + | if [ "$#" -ne "1" ] ; then | ||
| + | echo "Syntax: ./funcMoodleChallenge.sh n" | ||
| + | echo "where n is an integer" | ||
| + | exit | ||
| + | fi | ||
| + | function fact { | ||
| + | if [ "$1" -eq "1" ] ; then | ||
| + | return 1 | ||
| + | fi | ||
| + | newN=$( expr $1 - 1 ) | ||
| + | fact $newN | ||
| + | return $( expr $? \* $1 ) | ||
| + | } | ||
| + | |||
| + | |||
| + | n=$1 | ||
| + | fact $n | ||
| + | echo "fact( $n ) = $?" | ||
| + | |||
| + | |||
| + | </source> | ||
| + | <br /> | ||
| + | <br /> | ||
</onlydft> | </onlydft> | ||
