how to use bash parameter ?It's a good example

testfunc2 ()
{
echo "$# parameters";
echo Using '$*';
for p in $*;
do
echo "[$p]";
done;
echo Using '"$*"';
for p in "$*";
do
echo "[$p]";
done;
echo Using '$@';
for p in $@;
do
echo "[$p]";
done;
echo Using '"$@"';
for p in "$@";
do
echo "[$p]";
done
}

#search function
function google()
{
w3m www.google.com/search?q="$*"
}
function baidu()
{
w3m www.baidu.com/s?wd="$*"
}