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"Opposite" of cin.fail()?

Jul 27, 2014 at 4:57pm
MI Wright (7)
Is there any way to detect when cin succeeds, like how cin.fail() looks for when it, well... fails?
Jul 27, 2014 at 5:05pm
jlb (4973)
Yes. There are several ways to test C++ streams.
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if(!cin.fail()) 
..,

if(cin.good())
...


if(!cin)
...

if(cin)
...


Jul 27, 2014 at 5:06pm
Chervil (7320)
Normally simply if (cin).

Often, rather than doing say:
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    int n;
    cin >> n;
    if (cin)

one would prefer this:
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    int n;
    if (cin >> n)

Last edited on Jul 27, 2014 at 5:07pm
Jul 27, 2014 at 5:18pm
MI Wright (7)
Alright, that makes sense. Thanks!
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