C + + Primer reading notes (2)

Getline (cin,string s) can read a whole line, including whitespace characters. End With CTRL + Z

String literals are different types from string literals. Two string literals cannot be added directly.

When working with characters in a string object, C + + defines a number of library functions that are easy to use.

If you want to process each character, you can use the range for statement: for (declarationg:expression), if you want to change the value in expression, you can define declaration as a reference type.

String::size_type n;cin>>n;n<s.size ();//n, although entered as a string, is unsigned.

C + + Primer reading notes (2)