Arrays in Data Structure
Declaration, Initialization, Memory
representation
Understanding Memory and Arrays in
Programming :
In programming, memory is essentially a long tape of bytes, with each
byte containing 8 bits. This can be extended to both sides, making it
open-ended. To understand the need for arrays, we need to examine how
areas can be declared, initialised, and represented in memory.
Storing Values in Memory :
To store a value in memory, we need to know how much space will be
allocated for it. For example, the data type int typically takes up 4 bytes
to store an integer. The number 5 would need to be converted to binary,
which is 32 bits, or 4 bytes. In traditional compilers, we generally take 2
or 4 bytes to be the data type for storing numbers. So, if we were storing
an integer, it would take up 2-4 bytes in memory.
The memory manager would allocate some memory for storing a
variable, and the value stored in memory would be represented in binary.
For example, the value stored in a variable could be 5, which would be
represented as 101 in binary.
Using Arrays :
An array is a collection of more than one element of the same datatype.
Declaration, Initialization, Memory
representation
Understanding Memory and Arrays in
Programming :
In programming, memory is essentially a long tape of bytes, with each
byte containing 8 bits. This can be extended to both sides, making it
open-ended. To understand the need for arrays, we need to examine how
areas can be declared, initialised, and represented in memory.
Storing Values in Memory :
To store a value in memory, we need to know how much space will be
allocated for it. For example, the data type int typically takes up 4 bytes
to store an integer. The number 5 would need to be converted to binary,
which is 32 bits, or 4 bytes. In traditional compilers, we generally take 2
or 4 bytes to be the data type for storing numbers. So, if we were storing
an integer, it would take up 2-4 bytes in memory.
The memory manager would allocate some memory for storing a
variable, and the value stored in memory would be represented in binary.
For example, the value stored in a variable could be 5, which would be
represented as 101 in binary.
Using Arrays :
An array is a collection of more than one element of the same datatype.
