Chapter 6 binary, octal, and hexadecimal
6.1 why do we need octal and hexadecimal?
6.2 decimal number conversion to decimal number
6.2.1 convert binary to decimal
6.2.2 convert octal to decimal
6.2.3 expression of the octal number
6.2.4 use of Octal
6.1 why do we need octal and hexadecimal?
In programming, we usually use 10 hexadecimal notation ...... C/C ++ is a high-level language.
For example:
Int A = 100, B = 99;
However, because the representation of data in a computer exists in binary
6.1
Why do we need octal and hexadecimal?
In programming, we usually use 10 hexadecimal notation ...... C/C ++ is a high-level language.
For example:
Int A = 100, B = 99;
However, because the representation of data in a computer exists in
In programming, we usually use 10 hexadecimal notation ...... C/C ++ is a high-level language.
For example:
Int A = 100, B = 99;
However, because the representation of data in a computer exists in binary format, sometimes binary can be used to solve
Ii. Convert hexadecimal to decimalConvert binary to decimal: 0th bits in binary are 0 to the power of 2, and 1st bits are 1 to the power of 2 ......Therefore, there is a binary number: 0110 0100, which is converted to a 10-digit system:The following
5.8. hexadecimal. 2
5.8.1 hexadecimal
DescriptionIn hexadecimal notation, we will first ask: there are only 10 Arabic numerals in total: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, how can we express the concept of "every 16 to 1? The method is to use English
1. Gets the hexadecimal value of each character in the ' string '.2. Gets the character that corresponds to each value in the hexadecimal string. 、3. Convert the hexadecimal string to shaping.4. Converts a hexadecimal string to a floating-point type.
In programs, we sometimes need to convert a hexadecimal string to a decimal number. For example:Char * PTR = "0x11 ";Int n = 0;// We want n to be equal to 0x11, that is, 17
In C, we usually use the following method to convert a string to an integer:
Java programming those things 7-the concept of hexadecimal Author: Chen yuefeng from: http://blog.csdn.net/mailbomb
1.2 hexadecimal ConceptBecause it is impossible to create a symbol for each value, a composite value needs to be combined with a
/*** Convert decimal to binary, octal, and hexadecimal * Note: * 1) an integer in Java is represented by four octal digits, that is, 32 binary digits * 2). A binary digit is represented by 0 and 1, and the maximum value is 1*3). An octal digit
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