can u help me in this unix program?

Question

input three numbers and find out which one is smallest of them. like input a,b,c
and print if "a,b or c is the smallest.......... i tried but this not worked

echo "enter 3 numbers"
read a b c
if [ $a -lt $b ]
then
if [$a -lt $c ]
then
echo "a is the smallest"
fi

elif [ $b -lt $a ]
then
if [ $b -lt $c ]
then
echo "b is the smallest"

else
echo "c is the smallest"
fi
fi

Answer 1

You are almost there. This works:
#!/bin/sh
echo "enter 3 numbers"
read a b c
######################
if [ $a -lt $b ]
then
if [ $a -lt $c ]
then echo "a is smallest"
fi
fi
######################
if [ $b -lt $a ]
then
if [ $b -lt $c ]
then echo "b is smallest"
fi
fi
######################
if [ $c -lt $b ]
then
if [ $c -lt $a ]
then echo "c is smallest"
fi
fi