Shell program to reverse a number

[Bottlenecked]

Hello Friends,

I am learning the Shell script programming. It seems quit difficult to code the shell programs than codding c programs. I have to write the one shell program to reverse the given number. Suppose if you provides '1234' as a input to the shell program it should return '4321' as a output result. I have tried lots with no luck. Do you have sound knowledge about shell programming. Please help me to code shell program for reverse number.

[opaper]

Below I have given one shell program to print given number in reverse order, see below:

echo "Enter one Number"
read nl
nl2=0
while [ $nl - ne 0 ]

do
nl2=`expr $nl % 10 + $nl2 \* 10`
nl=`expr $nl / 10`
done

echo $nl2

[MindSpace]

Shell program to reverse a number:

echo -p "provide number : "
read p

sd1=0

rev1=""

on=$p

while [ $p -gt 0 ]

do

sd1=$(( $p % 10 ))
n1=$(( $p / 10 ))
rev1=$( echo ${rev1}${sd} )

done

echo "$reverse order= $rev1"

[Modifier]

Refer to following shell script program. In this program I have used on expression to make number reverse. First I divided the given number 'x' by ten then I multiplied by 'x2' number. After that I reassigned the value of 'x/10' to the number 'x'. For this I have used 'while' loop.

echo "Type Number"
read x // accept value for x
x2=0

while [ $num -ne 0 ]
do

x2 =`expr $x % 10 + $x2\* 10`// use while loop to calcualate reverse number
x =`expr $x / 10`

done
echo $x2

[Katty]

Hi friend,

Please study carefully C program which prints the reverse number. Don't copy the entire program to code shell program for reverse number. I suggest you to just refer the programming logic that I used in this program. You need to implement the same logic in your shell program.

void main()
{
int w, s, d, f, g;

printf("Enter Number to Find it's Reverse number\n");
scanf("%d",&w);

while(w!=0)
{
s=a%10;
d=a/10;

printf("%d",s);

w=d;
}

[kelfro]

Shell program code to reverse a number:

if [ $# -ne 1 ]
then

fi

m=$1
rv=0
smd=0

while [ $n -gt 0 ]
do
smd=`expr $nm % 10`
rv=`expr $rv\* 10 + $sd`
nm=`expr $nm/ 10`
done
echo "Reverse number is $rv"