It refers to a type of automatic conversion small capacity type data can be automatically converted into a large capacity of data types. 2-6, the black line represents the automatic type without loss of data conversion, while the dotted line indicates the conversion accuracy may be lost.
FIG automatic conversion 2-6
Integer constant can be directly assigned byte, short, char and other types of variables, without the need for cast, as long as the number does not exceed the table range.
[Example 2-26] Specific examples automatic conversion
short b = 12; //合法
short b = 1234567;//非法，1234567超出了short的表数范围Note: You do not have to remember, to remember large to accommodate small and large houses put a small house things simple! Integer is easy to understand, the more precise floating point, equivalent to the longer length of the house, will put more stuff!
