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Thank you Eri523! That helps a lot!
But I met another problem with my code using getline(cin,temp);
I changed my code to this. The thing is, the first time in the do...while loop, everything is...

Thank you Drmmr.
But I still didn't get how to use push_back when you are dealing with a vector of class type.
For example, in my code, the class type has two private members 'price' and 'title'....

Hi all,
I built a class type 'books' which includes the title and the price of a particular book. And I want to use vectors to store all the books information I have. This code should be able to get...