Texas Instruments PLUS TI-89 - Manual (Page 475)

458 Appendix A: Functions and Instructions
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 458 of 132
InputStr CATALOG
InputStr [ promptString ,] var
Pauses the program, displays promptString on
the Program I/O screen, waits for you to
enter a response, and stores your response as
a string in variable
var .
If you omit promptString , “?” is displayed as a
prompt.
Note: The difference between Input and
InputStr is that InputStr always stores the
result as a string so that “ ” are not required.
Program segment:
©
:InputStr "Enter Your Name",str1
©
inString() MATH/String menu
inString( srcString , subString [, start ]) ⇒ integer
Returns the character position in string
srcString at which the first occurrence of
string subString begins.
start , if included, specifies the character
position within srcString where the search
begins. Default = 1 (the first character of
srcString ).
If srcString does not contain subString or start
is > the length of srcString , returns zero.
inString("Hello there","the")
¸
7
"ABCEFG"! s1:If inString(s1,
"D")=0:Disp "D not found." ¸
D not found.
int() CATALOG
int( expression ) ⇒ integer
int( list1 ) ⇒ list
int( matrix1 ) ⇒ matrix
Returns the greatest integer that is less than
or equal to the argument. This function is
identical to
floor() .
The argument can be a real or a complex
number.
For a list or matrix, returns the greatest
integer of each of the elements.
int(л 2.5) ¸ л 3.
int([-1.234,0,0.37]) ¸
[-2. 0 0.]
intDiv() CATALOG
intDiv( number1 , number2 ) ⇒ integer
intDiv( list1 , list2 ) ⇒ list
intDiv( matrix1 , matrix2 ) ⇒ matrix
Returns the signed integer part of argument 1
divided by argument 2.
For lists and matrices returns the signed
integer part of argument 1 divided by
argument 2 for each element pair.
intDiv(л 7,2) ¸ л 3
intDiv(4,5) ¸ 0
intDiv({12,л 14,л 16},{5,4,л 3})
¸
{2 л 3 5}
integrate See ‰ () , page 532.