Substring/Top and tail

Substring/Top and tail is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

The task is to demonstrate how to remove the first and last characters from a string. The solution should demonstrate how to obtain the following results:

• String with first character removed
• String with last character removed
• String with both the first and last characters removed

ZX Spectrum Basic

<lang zxbasic> 10 PRINT FN f$("knight"): REM strip the first letter 20 PRINT FN l$("socks"): REM strip the last letter 30 PRINT FN b$("brooms"): REM strip both the first and last letter 100 STOP

9000 DEF FN f$(a$)=a$(2 TO LEN(a$)) 9010 DEF FN l$(a$)=a$(1 TO LEN(a$)-(1 AND (LEN(a$)>=1))) 9020 DEF FN b$(a$)=FN l$(FN f$(a$)) </lang>