CO2402 Advanced Programming with C++ Lecture 3-4 Notes
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Grado
Advanced Programming with C++ (CO2402)
Institución
University Of Central Lancashire Preston (UClan)
This document contains detailed lecture notes from Lectures 3 and 4 of the CO2402 course on Advanced Programming with C++. It covers critical aspects of memory management and pointers, including the basics of memory units, the importance of memory in programming, and the use of pointers for efficie...
o Bit: The smallest unit of data in a computer, representing a
binary state (0 or 1).
o Byte: Consists of 8 bits.
o Word: The standard data size for a given architecture,
typically 16, 32, or 64 bits.
Understanding memory units is crucial as they define how data is
stored and manipulated in a computer.
2. Why is Memory Important?
o Knowing the size of data types is essential for operations like
sorting, efficient memory usage, and optimizing performance,
especially in memory-constrained environments like embedded
systems.
Example: The sizeof() operator returns the size of a data type in
bytes, which is vital for functions like qsort() that require
knowledge of the size of elements.
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