Create Decimal-Binary.sh

Author: CodeMaster7000

Decimal-Binary.sh

@@ -0,0 +1,31 @@
+main() {
+ if [ $# -ne 1 ]; then
+ echo "You must provide only 1 number."
+ exit 1
+ fi
+ re='^[0-9]+$'
+ if ! [[ $1 =~ $re ]]; then
+ echo "$1 is not a positive integer."
+ exit 1
+ fi
+ echo "Conversion of a decimal number $1 to its binary representation."
+ number=$1
+ reminder=1
+ binary_representation=" "
+ while [ "$number" -gt 0 ]
+ do
+ reminder=$(( number % 2))
+ binary_representation="$binary_representation$reminder"
+ number=$(( number / 2))
+ done
+ i=${#binary_representation}
+ result=" "
+ while [ "$i" -gt 0 ]
+ do
+ rev=$(echo "$binary_representation" | awk '{ printf substr( $0, "$i",1 ) }')
+ result="$result$rev"
+ i=$(( i - 1 ))
+ done
+ echo "Binary representation: $result"
+}
+main "$@"