Mikroelektronika MIKROE-724 データシート

206

mikoBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

A string represents a sequence of characters equivalent to an array of 

char

. It is declared like this:

string[string_length]

The specifier 

 is a number of characters a string consists of. The string is stored internally as the given 

sequence of characters plus a final 

null

 character (zero). This appended “stamp” does not count against string’s total 

length.

A null string (

“”

) is stored as a single 

null

 character.

You can assign string literals or other strings to string variables. The string on the right side of an assignment operator 

has to be shorter than another one, or of equal length. For example:

dim msg1 as string[20]

dim msg2 as string[19]

main:

  msg1 = “This is some message”

  msg2 = “Yet another message”

  msg1 = msg2  ‘ this is ok, but vice versa would be illegal

Alternately, you can handle strings element–by–element. For example: 

dim s as string[5]

‘ ...

s = “mik”

Be  careful  when  handling  strings  in  this  way,  since  overwriting  the  end  of  a  string  will  cause  an  unpredictable 

behavior.

Array of string is declared in this manner:

typedef str as string[5]   ‘ first, declare str as a string of 5 elements

dim buffer as str[5]       ‘ now, declare buffer as a array of str elements

String Concatenating 

mikroBasic PRO for dsPIC30/33 and PIC24 allows you to concatenate strings by means of plus operator. This kind of 

concatenation is applicable to string variables/literals, character variables/literals. For control characters, use the non-

quoted hash sign and a numeral (e.g. 

#13

 for CR).