Check that file exists: Difference between revisions
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(Applesoft BASIC) |
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=={{header|Applesoft BASIC}}== |
=={{header|Applesoft BASIC}}== |
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The error code for FILE NOT FOUND is 6. |
The error code for FILE NOT FOUND is 6. |
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<lang ApplesoftBasic> |
<lang ApplesoftBasic>1100 F$ = "THAT FILE" |
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110 |
110 T$(0) = "DOES NOT EXIST." |
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120 T$( |
120 T$(1) = "EXISTS." |
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130 |
130 GOSUB 200"FILE EXISTS? |
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140 |
140 PRINT F$; " "; T$(E) |
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⚫ | |||
150 PRINT F$; " "; T$(E) |
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⚫ | |||
200 E = 1 |
200 E = 1 |
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210 ON ERR GOTO 250"CATCH |
210 ON ERR GOTO 250"CATCH |
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220 REM TRY |
220 REM TRY |
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230 PRINT |
230 PRINT CHR$(4); "VERIFY "; F$ |
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240 POKE 216, 0 : GOTO 280"END TRY |
240 POKE 216, 0 : GOTO 280"END TRY |
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250 REM CATCH |
250 REM CATCH |