# std::istream_iterator<T,CharT,Traits,Distance>::operator++, operator++(int)

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< cpp‎ | iterator‎ | istream iterator

istream_iterator& operator++(); | (1) |
istream_iterator operator++(int); | (2) |

Reads a value from the underlying stream and stores it into the iterator object. If the read fails, the iterator becomes the end-of-stream iterator.

The behavior is undefined if the iterator is end-of-stream iterator.

### Parameters

(none)

### Return value

1) *this.
2) An `istream_iterator` that holds an unchanged value.

### Exceptions

(none)

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