{"id":120374,"date":"2023-10-13T19:00:28","date_gmt":"2023-10-13T13:30:28","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=120374"},"modified":"2023-10-13T19:30:06","modified_gmt":"2023-10-13T14:00:06","slug":"left-shift-and-right-shift-operators-in-c","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/left-shift-and-right-shift-operators-in-c\/","title":{"rendered":"Left Shift and Right Shift Operators in C"},"content":{"rendered":"

Bitwise operations play a crucial role in low-level programming by enabling the manipulation of individual bits within binary data. Among these operations, the left shift and right shift operators are fundamental tools with a wide range of applications for binary data manipulation.<\/p>\n

In the realm of C programming, we will delve into these operators to understand their mechanics, explore their practical applications, and grasp their significance in real-world scenarios.<\/p>\n

Understanding Bitwise Not Operator<\/h2>\n

The left shift operator and right shift operator for bitwise shifts in C are denoted by “” and “>>,” respectively. These operators allow us to change the value of a number based on the altered places by shifting the bits of a number to the left or to the right.<\/p>\n

Left Shift Operator (<<)<\/h3>\n

The value to be shifted and how many positions to be added to it are the two operands for the left shift operator (). By the predetermined number of locations, it shifts the bits to the left while packing zeros into the empty spaces on the right. Here is an illustration:<\/strong><\/p>\n

#include <stdio.h>\r\nint main() {\r\n    int a = 5;  \/\/ Binary: 0101\r\n    int result = a << 2;  \/\/ Binary result: 010100 (20 in decimal)\r\n    printf(\"Result of a << 2: %d\\n\", result);  \/\/ Output: 20\r\n    return 0;\r\n}<\/pre>\n
Output:<\/strong><\/p>\n
\"left<\/a><\/p>\n
#include <stdio.h>\r\n\r\nint main() {\r\n    \/\/ Declare a local variable\r\n    unsigned int value = 15; \/\/ Decimal value\r\n    \/\/ Use the left shift operator to shift the bits\r\n    value = value << 2; \/\/ Left shifting by 2 positions\r\n    printf(\"After left shifting by 2 positions, the updated value is: %u\\n\", value);\r\n    return 0;\r\n}<\/pre>\n
Output:<\/strong><\/p>\n
After left shifting by 2 positions, the updated value is<\/strong>\u00a060
\nTime Complexity:<\/strong> O(1)
\nSpace Complexity:<\/strong> O(1)<\/p>\n
\"left<\/a><\/p>\n
How Left Shift Operator Works in C?<\/h3>\n
Two integral operands are subjected to a bitwise operation by the left shift () operator in the C language. The second operand specifies a number of locations in which the operator should shift the bits of the first operand to the left. Zeros are inserted into the empty spaces left by the shift on the right side. The sign bit and the bits that are relocated past the end are discarded.<\/p>\n
Key points to understand:<\/strong><\/p>\n