$ = ""
$ =""
PRINT INSTR(a$, b$)
PRINT INSTR(3, a$, b$)
:
. INSTR , (2). 5.
LTRIM$ RTRIM$
() () , .
LTRI$ (_)
RTRI$ (_)
ASC
ASCII, .
S (_)
, . ASCII- .
7. ASC
PRINT ASC("A"):
PRINT ASC("AB")
:
65 65
CHR$
, ASCII.
CHR$(n)
n ASCII. O 0 255, Illegal function call ( ).
, , . :
.
.
.
4. / / .
.
.
.
,
LEN. (INTEGER), .
8.
A$ = x = LEN (A$) PRINT X : 6
LEN . , :
PRINT LEN(")
LEN , .
, . , . , , ,
, , , : , .
|
|
|
MID$.
9.
A$ = "" '
x = LEN(A$) '
FOR i = 1 TO x
tmp$ = MID$(A$, i, 1) ' tmp$
PRINT tmp$ '
NEXT i
PRINT LEN("")
X
. A$ . . , 1 . MID$ tmp$ (i-) A$. $ , MID$ , tmp$. tmp$ . i = 1 , i - 2 , . , , MID$.
10.
$ =""
FOR i = 1 TO LEN(a$)
tmp$ = MID$(a$, i, 1) '
IF tmp$ = "" THEN k = k + 1 ' ""
NEXT i
PRINT k '
: 5
. MID$ tmp$. IF , tnp$ . tmp$= "a", k 1.
MID$ .
