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Chapter: 3 / Q: e.g3.2.2.2
Like the input and output operations on the built-in types, the string operators return their left-hand operand as their result. Thus, we can chain together multiple reads or writes
Chapter: 3 / Q: e.g3.2.2.3
We can write a similar program that reads strings instead
Chapter: 3 / Q: e.g3.2.2.4
We can rewrite the previous program that wrote one word per line to write a line at a time instead
Chapter: 3 / Q: e.g3.2.2.5
We can revise the previous program to only print lines that are not empty
Chapter: 3 / Q: e.g3.2.2.6
The size member returns the length of a string (i.e., the number of characters in it). We can use size to print only lines longer than 80 characters
Chapter: 3 / Q: e.g3.2.2.7
As an example, consider the following strings
Chapter: 3 / Q: e.g3.2.2.8
In the case of strings, we can assign one string object to another
Chapter: 3 / Q: e.g3.2.2.9
The compound assignment operator (+=) (§ 1.4.1, p. 12) appends the right-hand operand to the lefthand string
Chapter: 3 / Q: e.g3.2.2.10
Because we can use these literals where a string is expected, we can rewrite the previous program as follows
Chapter: 3 / Q: e.g3.2.2.11
When we mix strings and string or character literals, at least one operand to each + operator must be of string type
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