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Runtime evaluation: Difference between revisions
Add header for GW-BASIC
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VAL and KEYIN execute code in the environment they are called from. In the above examples, VAL and KEYIN both see the local variable x.
There is no sandbox functionality in Bata BASIC or SAM BASIC.
===GW-BASIC===▼
<lang qbasic>10 LINE INPUT "Type an expression: ",A$▼
20 OPEN "CHAIN.TMP" FOR OUTPUT AS #1▼
30 PRINT #1, "70 LET Y=("+A$+")"▼
40 CLOSE #1▼
50 CHAIN MERGE "CHAIN.TMP",60,ALL▼
60 FOR X=0 TO 5▼
70 REM▼
80 PRINT X,Y▼
90 NEXT X▼
100 GOTO 10</lang>▼
==={{works with|ZX Spectrum Basic}} ===
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println years5</lang>
▲<lang qbasic>10 LINE INPUT "Type an expression: ",A$
▲20 OPEN "CHAIN.TMP" FOR OUTPUT AS #1
▲30 PRINT #1, "70 LET Y=("+A$+")"
▲40 CLOSE #1
▲50 CHAIN MERGE "CHAIN.TMP",60,ALL
▲60 FOR X=0 TO 5
▲70 REM
▲80 PRINT X,Y
▲90 NEXT X
▲100 GOTO 10</lang>
=={{header|HicEst}}==
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