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There are so few effective figures in C language programming, why do you want to do such a large data range? What does that little form mean?
This is a form of data stored in the machine. In reality, we have 1, 2847,51.88 yuan, and we usually only say: 1.28 billion yuan. The same.
Table: 1. This is a sign 2. It is a decimal, such as 1.28 above. This is the symbol of rank code. 4. It is the size of the rank code, such as the above 8( 10 to the eighth power), but what is stored in the machine is the power of 2.