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strings [2019/06/27 07:45] – neilsstrings [2019/09/09 07:47] – [Using buffers] neils
Line 47: Line 47:
   a$ = "hello world"   a$ = "hello world"
   b$ = a$   b$ = a$
-  rem -- replace the first character with an 'a' (petscii code: 65) +  rem -- replace the first character with an 'a' 
-  poke a$, 65+  poke a$, 'a'
   print b$   print b$
   rem -- the above will print "aello world"   rem -- the above will print "aello world"
Line 84: Line 84:
   print a$   print a$
      
-In the example above, ''strbuffer!'' is an array of 256 bytes. The ''@'' (address-of) operator returns the start address of the array and assigns it to ''a$''. Now ''a$'' points to a working space where your can store keyboard input.+In the example above, ''strbuffer!'' is an array of 256 bytes. The ''@'' (address-of) operator returns the start address of the array and assigns it to ''a$''. Now ''a$'' points to a working space where you can store keyboard input.
  
 To define a 40 characters long string and initialize it to empty (zero length), you can write the following code: To define a 40 characters long string and initialize it to empty (zero length), you can write the following code: