Strip whitespace from a string/Top and tail

The task is to demonstrate how to strip leading and trailing whitespace from a string. The solution should demonstrate the following three results:

• String with leading whitespace removed
• String with trailing whitespace removed
• String with both leading and trailing whitespace removed

Template:QBasic

<lang qbasic> mystring$=ltrim(mystring$) ' remove leading whitespace

mystring$=rtrim(mystring$)           ' remove trailing whitespace
mystring$=ltrim(rtrim(mystring$))    ' remove both leading and trailing whitespace

</lang>