Write a script that behaves both in interactive and non-interactive mode. When no arguments are supplied, it picks up each C program from current directory and lists the first 10 lines. It then prompts for deletion of the file. If the user supplies arguments with the script, then it works on those files only.

flag=1
if [ $# -ne 0 ];then # IF USER PROVIDE ARGUMENTS
echo $* >temp
flag=1
else # IF USER NOT PROVIDE ARGUMENTS
ans=`ls *.c`
if [ "" == "$ans" ];then
echo "THERE ARE NO C FILE"
flag=0
else
ls *.c>temp
flag=1

fi
fi
if [ $flag -eq 1 ];then
for filename in `cat temp`
do
if [ -f $filename ];then
echo "\t\t\t========="
echo "\t\t\t$filename"
echo "\t\t\t========="
echo " "
sed -n -e "1,10 p" $filename
rm -i $filename
fi
done
rm temp
fi