| Case
Study: Implementation |
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| void
OpenForInput( /* inout */ ifstream& someFile ) |
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| // Prompts the user for the name of an input file |
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| // and attempts to open the file |
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| // Postcondition: |
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| // The user has been
prompted for a file name |
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| // && IF the file
could not be opened |
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| // An error message
has been printed |
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| //
Note: |
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| // Upon return from this
function, the caller must test |
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| // the stream state to
see if the file was successfully |
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| // opened |
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