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Program to find the reverse of a given number

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C      Program to find the reverse of a given number
        write(*,*)'Enter an integer:'
        read(*,*)n
        m=n
        rev=0
        if (n.eq.0)then
        write(*,*)'The reverse number is:',n
        else
        dowhile (n.ne.0)
        r=mod(n,10)
        rev=rev*10+r
        n=n/10
        end do
        write(*,*)'The reverse of the given number is',rev
        end if
        end
        
       
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