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What does the calculation result "e" of scientific calculator mean?
The calculation result "e" of the scientific calculator means: 10 is the exponential power of the base. For example: E+26 = 10 26.

Scientific counting method is a convenient method used by scientists to represent very large or very small numbers, which satisfies the regular expression [+-] [1-9]. [0-9]+E [+-] [0-9]+, that is, the integer part of a number has only 1 digit, and the decimal part has at least 1 digit.

Now, the real number A is given in the format of scientific notation. Please write the program output a according to the ordinary digital notation, and make sure that all valid bits are reserved.

Extended data

1, the significance of scientific notation

"aE" means that there is no scientific counting meaning, AE = a.

"Ea" is a scientific notation, that is, when Ea= 1Ea a=3, 1E3= 1000.

aEb=c a=c/Eb

2. Expressions related to scientific counting methods:

aEb=a× 10^b

( 1)3× 10^4+4× 10^4=7× 10^4

That is aebec = ab = EC.

(2)3e 6×6e 5 = 18e 1 1 = 1.8e 12

That is aEM×bEN=abE(M+N)

(3)-6E4÷3E3=-2E 1

That is aEM÷bEN=a/bE(M-N).

Baidu encyclopedia-scientific counting method