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In computer science, a pointer is an object in many programming languages that stores a memory address. This can be that of another value located in computer memory, or in some cases, that of memory-mapped computer hardware. A pointer references a location in memory, and obtaining the value stored at that location is known as dereferencing the ...
The cursor for the Windows Command Prompt (appearing as an underscore at the end of the line). In most command-line interfaces or text editors, the text cursor, also known as a caret, [4] is an underscore, a solid rectangle, or a vertical line, which may be flashing or steady, indicating where text will be placed when entered (the insertion point).
In computer science, pointer analysis, or points-to analysis, is a static code analysis technique that establishes which pointers, or heap references, can point to which variables, or storage locations. It is often a component of more complex analyses such as escape analysis. A closely related technique is shape analysis.
8 direct pointer that directly point to blocks of a file with eight or fewer blocks; 8 singly indirect pointers (pointing to a block of direct pointers) for files with more than eight blocks. In the file system used in Version 7 Unix , an inode contains thirteen pointers: [ 2 ]
The program counter (PC), [1] commonly called the instruction pointer (IP) in Intel x86 and Itanium microprocessors, and sometimes called the instruction address register (IAR), [2] [1] the instruction counter, [3] or just part of the instruction sequencer, [4] is a processor register that indicates where a computer is in its program sequence.
A computer mouse Touchpad and a pointing stick on an IBM notebook Trackpoint An elder 3D mouse 3D pointing device. A pointing device is a human interface device that allows a user to input spatial (i.e., continuous and multi-dimensional) data to a computer.
Output of the following program: 81; Because both addresses point to same location. Physical Address = (value of segment register) * 0x10 + (value of offset). Location pointed to by pointer p is : 0x5555 * 0x10 + 0x0005 = 0x55555 Location pointed to by pointer q is : 0x5333 * 0x10 + 0x2225 = 0x55555 So, p and q both point to the same location ...
The point location problem is a fundamental topic of computational geometry. It finds applications in areas that deal with processing geometrical data: computer graphics , geographic information systems (GIS), motion planning , and computer aided design (CAD).