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CO2402 Advanced Programming with C++ Lecture 3-4 Notes £2.99   Add to cart

Lecture notes

CO2402 Advanced Programming with C++ Lecture 3-4 Notes

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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...

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  • August 5, 2024
  • 4
  • 2023/2024
  • Lecture notes
  • Nicholas mitchell
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CO2402: Advanced Programming
with C++ Lecture 3

Memory and Pointers

1. Basics of Memory

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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