The + operator can be used between strings to add them together to make a new string. This is called concatenation:
Example
string firstName = "John ";
string lastName = "Doe";
string fullName = firstName + lastName;
cout << fullName;
string lastName = "Doe";
string fullName = firstName + lastName;
cout << fullName;
In the example above, we added a space after firstName to create a space between John and Doe on output. However, you could also add a space with quotes (
" " or ' '):
Example
string firstName = "John";
string lastName = "Doe";
string fullName = firstName + " " + lastName;
cout << fullName;
string lastName = "Doe";
string fullName = firstName + " " + lastName;
cout << fullName;
Append
A string in C++ is actually an object, which contain functions that can perform certain operations on strings. For example, you can also concatenate strings with the append() function:
Example
string firstName = "John ";
string lastName = "Doe";
string fullName = firstName.append(lastName);
cout << fullName;
string lastName = "Doe";
string fullName = firstName.append(lastName);
cout << fullName;
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