Texas Instruments TI-99/4A - Page 134

GOSUB
{
GOSUB }
line-number
GO SUB
The GOSUB statement is used with the RETURN statement to
allow you to transfer the program to a subroutine, complete the
steps in the subroutine. and return to the next program lme
following the
eOSUB statement. When the computer performs
the
GOSUB statement, it saves the next line number of the main
program so that it can return to that pomt when it encounters a
RETURN statement in the subroutine,
(The space between GO and SUB is optional.)
11·114
Examples:
>NEII
>100 REM BUILD AN ARRAY,
MULllPLY EACH ELEMENT BY j,
PRINT BOTH ARRAYS
>110 FOR X=l TO 4
>120 FOR Y=l TO 7
~130 l(X,Y)-INI C30*KND)+1
>140 NEXT Y
>150
NEXT X
>160
PRINT "FIRST ARRAY":
;>170 GO:>UB 200
>180 FOR X-1 TO 4
>190
FOR V=1 TO 7
>200 I(X,Y)=3*I(X,V)
>210 NEXT Y
>220 NEXT X
>230
PRINT "3 TIMES VALUES IN
FIRST ARRAY"::
>240 GOSU6 260
>250 STOP
>260 REM SUBROUTINE TO PRINT
ARRAY
>270 fOR X
E
1 TO 4
>280 FOR Y=1 TO 7
>290 PRINT I(X,Y);
>300 NEXT Y
>310 PRINT
>320 NEXT X
>330 PRINT
>340 RETURN
=-RUN
FIRST ARRAY
16
12 17
12
8
17 8
18
22 1
29 16
11,
11
5
25 22
4 24
11 24
26
21 18
2 12 20
15
3 TIM~S
VALUO:S IN
FIRST ARRA
Y
48 36 51
36 24
51
24
~t. f.6
3
ill
1.8
I.?
33
'5
75
66
12 72
33
72
78
63
54
6
36
60
45
**
nONF
**
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