In C language, > are bit shift operators, used to perform bit operations on integer variables: >: Right shift operator, which moves the binary representation of the operand to the right by a specified number of digits, which is equivalent to division by a power of 2. Signed right shift (>>) preserves the sign bit, while unsigned right shift (>>>) fills empty bits with zeros.
##Usage of > operators in C language
In C language , > are displacement operators, used to perform displacement operations on integer variables.Left shift operator (##
int x = 5; // 二进制表示:00000000 00000101 int y = x <p></p>right shift operator (>>)<p><strong></strong></p> operator shifts the binary representation of the operand to the right by the specified number of digits, which is equivalent to For base 2 division. It can also be divided into signed right shift (>>) and unsigned right shift (>>>). <blockquote><blockquote></blockquote></blockquote>##Signed right shift (>>):
- will retain the sign bit of the operand and fill the left sign bit into the vacated bit. For example:
int x = -5; // 二进制表示:11111111 11111011 int y = x >> 2; // y 的二进制表示:11111111 11111100 // 等价于:y = x / 2^2 = -5 / 4 = -2
- will fill the vacated bits with 0, and the sign bit will not be retained. For example:
int x = 5; // 二进制表示:00000000 00000101 int y = x >>> 2; // y 的二进制表示:00000000 00000001 // 等价于:y = x / 2^2 = 5 / 4 = 1
Application scenarios
The bit shift operator has a wide range of application scenarios, including:
Bit field operation
- Data Compression
- Encryption and Decryption
- Performance Optimization
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