Why do string inputs break if you have a space

Asked Oct 15 '22 at 13:44

Active Oct 15 '22 at 13:48

Viewed 32 times

I have just started learning C++ and I created the following code:

std::string fName, lName;
std::cout << "Enter your first name" << std::endl ; 
std::cin >> fName ;
std::cout << "\nEnter your last name" << std::endl ; 
std::cin >> lName ;
std::cout << "\nHello " << fName << " " << lName ;
return 0;

But I noticed if I enter a name full name for fName i.e. "John Doe" lName get skipped but the code still prints out "Hello John Doe".

Could someone please explain why this behaviour occurs

asked Oct 15 '22 at 13:44

Platinum

The behavior occurs, because it is the default, that whitespaces cause text formatted extraction to stop. – πάντα ῥεῖ Oct 15 '22 at 13:47
Text input using streams like `std::cin` and the stream extraction operator `>>` will read *space delimited* input. So the input for `lName` isn't skipped. Try printing `fName` and `lName` separately. – Some programmer dude Oct 15 '22 at 13:48
@Someprogrammerdude Thats cool behaviour! Would there be a way to avoid that happening though? – Platinum Oct 15 '22 at 13:53
Read *lines* instead? With e.g. `std::getline`. – Some programmer dude Oct 15 '22 at 18:09

Why do string inputs break if you have a space

0 Answers0