What does this snippet of code do?

Asked Apr 07 '17 at 17:21

Active Apr 07 '17 at 17:21

Viewed 27 times

I'm reading through the C++ Primer and they're explaining how if statements work, but I'm not sure I understand what the expression is meant to do.

if (std::cin >> value) {
    do etc
{

What is the if statement checking? I don't quite get how std::cin >> value can be interpreted as a boolean. Is it just checking to see if there is something for the input stream to take in?

asked Apr 07 '17 at 17:21

Mdomin45

3

Just take a look at `std::cin`'s `operator>>` in the docs. – ForceBru Apr 07 '17 at 17:22
Also look up `std::ios::operator bool` – user4581301 Apr 07 '17 at 17:24
1

This question and answers can provide clarifications you need: http://stackoverflow.com/questions/33674521/how-does-while-stdcin-value-work – TopReseller Apr 07 '17 at 17:26

What does this snippet of code do?

0 Answers0