BASIC FUNCTIONS
SECTION 5.19
READ
5. 19.1 Function READ is used to input constants previously defined in a
DATA statement.
Syntax
READ Variable 1, Variable 2, .•• Variable n
Examples READ X
sets
X equal to the current DATA constant.
For example the program:
10 DIM D!(10):DIM A$(10,10)
20 DATA 3,4,5,2/3,"HELLO"
30 READ A,B,C,D!(O),A$(1)
40 PRINT A;B;C;D!(O);A$(1)
Prints:
3 4 5 .66666666666667 HELLO
with A,B,C equal to three sequential DATA constants, D!(O)
a double precision constant and A$(1) a string expression.
Remarks The constants are read sequentially until exhausted, when
an error will result. The sequence may be restarted by
using RESTORE.
The variable type in READ
must be the same as the
corresponding DATA items: if not, a RF.AD ERROR will cx.:cur.
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