Remote-processing BASIC 52 Uživatelský manuál stáhnout pdf (Strana 125)

RPBASIC-52 PROGRAMMING GUIDE

2-106

Syntax: A = STR(10,$(n),format,va riable)

Description:

Converts and formats variable into a string and puts it into $(n ). Varia ble A returns irrelevant data.

Formatting is controlled by the format variable. Strings are formatted into one of 3 basic patterns, described

below.

format = 0. Default free form at. When n umber is be tween ± 99999999 a nd ±0.1, RPBASIC will save integers

and fractions. When numbers are outside this range, the F0 format, described next, is used.

format = Fx. Floating point format. 'x' determines how many digits after the decimal point are saved. When

x = 0, the num ber of trailing digits will vary and tra iling 0's are not sa ved. 'x' is represen ted as a hex nu mbe r.

When format = 0F3H, 3 decimal numbers are printed. An alternate way of setting floating point output is to

make format= the number of decimal numbers plus 240.

format = xyH. Force integer and/or fraction output. Comma nd is same as USING(##.##), where 'x' is the

number digits left of the decimal point and y is to the right. Maximum value for x and y is 7. Use the hex

format to set the number.

Example: 10 String 200,20

20 C = 23.45

30 F = 0

40 A = STR(10,$(0),F,C)

50 PRINT "Variable value, before formatting:",C

60 PRINT "String in free format:",$(0)

70 F = 0F2H

80 A = STR(10,$(0),F,C)

90 PRINT "Using floating point format:",$(0)

100 F=52H

110 A=STR(10,$(0),F,C)

120 PRINT "Using #####.## format:",$(0)

run

Variable value, before formatting: 23.45

String in free format: 23.45

Using floating point format: 2.34 E+1

Using #####.## format: 23.45

ERROR

BAD ARGUMENT When function is out of range or string data is incorrect.

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Remote-processing BASIC 52 Uživatelský manuál Strana 125