执行语句序列 ofstream outfile ("DATA. DAT")； if(...)cout ＜＜"OK"；else cout ＜＜"FAIL"；后，如果文件打开成功，显示"OK"，否则就...

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有如下语句序列 ifstreaminfileDATA.DAT; ifinfile.goodcou

以读方式打开成功以读方式打开失败，但以写方式打开成功以读方式打开失败，以写方式打开也失败以读方式打开成功，以写方式打开也成功

执行语句序列ofstreamoutfitedata.datif...cout＜＜okelsecout

outfilfail()或outfile outfilgood()或!outfile outfilgood()或outfile outfilfail()或!outfile

执行语句序列ofstreamoutfiledatA.dat;ifcout＜＜ok;elsecout＜

outfile.fail()或outfile outfile.good()或!outfile outfile.good()或outfile outfile.fail()或!outfile

执行语句序列ofstreamoutfileDATA．DATif．．．cout＜＜OKelsecout

outfilfail()或outfile outfilgood()或!outfile outfilgood()或outfile outfilfail()或!outfile

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outfile.fail()或outffle outfile.good()或!outfile outfile.good()或outfile outfile.fail()或!outfile

执行语句序列 ofstreamoutfileDATA.DAT ifcout＜＜OKelsecou

outfile.fail()或 outfile outfile.good()或 !outfile outfile.good()或 outfile outfile.fail()或 !outfile

执行语句序列ofstreamoutfileDATA．DATifcout＜＜OKelsecout＜＜F

outfilfail()或 outfile outfilgood()或 !outfile outfilgood()或 outfile outfilfail()或 !outfile

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outfilfail() 或 outfile outfilgood()或!outfile outfilgood()或 outfile outfilfail()或!outfile

执行语句序列ofstreamoutfiledata.datifcout＜＜okelsecout＜＜f

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执行语句序列ofstreamoutfiledata.datifcout＜＜okelsecout＜＜f

outfile．fail()或outfile outfile．good()或!outfile outfile．good()或outfile outfile．fail()或!outfile

执行语句序列ofstreamoutfileDATE.DATifcout＜＜OK;elsecout＜＜

outfile.fail( )或outfile outfile.good( )或outfile outfile.good( )或!outfile outfile.fail( )或!out file

执行语句序列ofstreamoutfitedata.datif...cout＜＜okelsecout

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执行语句序列ofstreamoutfiledata.dat;ifcout＜＜ok;elsecout＜

outfile.fail()或outfile outfile.good()或!outfile outfile.good()或outfile outfile.fail()或!outfile

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outfile.fail()或 outfile outfile.good()或 !outfile outfile.good()或 outfile outfile.fail()或 !outfile

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outfilfail( )或outfile outfilgood( )或outfile outfilgood( )或!outfile outfilfail( )或!out file

执行语句序列ofstreamoutfileDATA.DATif...cout＜＜OKelsecout

outfile.fail ()或outfile outfile. good() 或outfile outfile.good ()或!outfile outfile.fail()或!outfile

执行语句序列ofstreamoutfiledata.datif...cout＜＜okelsecout

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执行语句序列 ofstream outfile ("DATA. DAT")； if(...)cout ＜＜"OK"；else cout ＜＜"FAIL"；后，如果文件打开成功，显示"OK"，否则就...

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