03. Strings and Characters

Source: Internet
Author: User

(1) Initializing an empty string

(2) variability

(3)

(4)

(5) Count () calculates the string length

(6) +, +=,append can merge string

(7) The%d%f placeholder in OC is now all used \ (value) backslash + parenthesis + parentheses + The amount of the parenthesis inside the placeholder

(8) String equality: divided into string prefixes equal, suffix equal and string equal

(9) Uppercase and lowercase strings

(Ten) Unicode: International standards, encoding and representation of language texts

03. Strings and Characters

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