A: LEFT("Visual FoxPro",6)与SUBSTR("Visual FoxPro",1,6)
B: YEAR(DATE())与SUBSTR(DTOC(DATE),7,2)
C: VARTYPE("36-5*4")与VARTYPE(36-5*4)
D: 假定A="this",B="is a string",A-B与A+B
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A: LEFT("Visual FoxPro",6)与SUBSTR("Visual FoxPro",1,6)
B: YEAR(DATE())与SUBSTR(DTOC(DATE),7,2)
C: VARTYPE("36-5*4")与VARTYPE(36-5*4)
D: 假定A="this",B="is a string",A-B与A+B
(责任编辑:admin) |