Arrays allow storing multiple values in a single variable. An array stores elements of the same data type in contiguous memory locations. Each element has an index, also called a subscript, to identify its position in the array. Two-dimensional arrays can store data in table or matrix form, with the first dimension specifying rows and the second specifying columns.
An array is a data structure that contains a group of elements. Typically these elements are all of the same data type, such as an integer or string. Arrays are commonly used in computer programs to organize data so that a related set of values can be easily sorted or searched.
The syntax for storing and displaying the values in an array typically looks something like this:
arrayname[0] = "This ";
arrayname[1] = "is ";
arrayname[2] = "pretty simple.";
print arrayname[0];
print arrayname[1];
print arrayname[2];
An array is a data structure that contains a group of elements. Typically these elements are all of the same data type, such as an integer or string. Arrays are commonly used in computer programs to organize data so that a related set of values can be easily sorted or searched.
The syntax for storing and displaying the values in an array typically looks something like this:
arrayname[0] = "This ";
arrayname[1] = "is ";
arrayname[2] = "pretty simple.";
print arrayname[0];
print arrayname[1];
print arrayname[2];
Array: Declaring a variable to refer to an array, Creating, Initializing, and Accessing an Array, Program to create array and display its elements, Copying Arrays
Introduction of arrays, Declaration of array, Initialization of array, Sorting, Multidimensional array. Some code examples that will make you clear about the concept of arrays.
https://github.com/ashim888/csit-c
Arrays in C++.
Purpose of Array.
Declaration of an Array.
Accessing Array Elements.
Example CPP programs using Array.
Multi-dimensional Array.
Advantages and Disadvantages of an Array.
An Introduction to Programming in Java: ArraysMartin Chapman
An Introduction to Programming in Java: Arrays. Last delivered in 2012. All educational material listed or linked to on these pages in relation to King's College London may be provided for reference only, and therefore does not necessarily reflect the current course content.
Array: Declaring a variable to refer to an array, Creating, Initializing, and Accessing an Array, Program to create array and display its elements, Copying Arrays
Introduction of arrays, Declaration of array, Initialization of array, Sorting, Multidimensional array. Some code examples that will make you clear about the concept of arrays.
https://github.com/ashim888/csit-c
Arrays in C++.
Purpose of Array.
Declaration of an Array.
Accessing Array Elements.
Example CPP programs using Array.
Multi-dimensional Array.
Advantages and Disadvantages of an Array.
An Introduction to Programming in Java: ArraysMartin Chapman
An Introduction to Programming in Java: Arrays. Last delivered in 2012. All educational material listed or linked to on these pages in relation to King's College London may be provided for reference only, and therefore does not necessarily reflect the current course content.
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2. For understanding the arrays properly, let us consider
the following program:
main( )
{
int x ;
x = 5 ;
x = 10 ;
cout<< x<<endl ;
}
3. • There are situations in which we would want to store
more than one value at a time in a single variable.
• For example, suppose we wish to arrange the marks
obtained by 100 students
• In such a case we have two options to store these marks
4. • Construct 100 variables to store marks obtained by 100
different students, i.e. each variable containing one
student’s marks.
• Construct one variable capable of storing or holding all
the hundred values.
5. • Obviously, the second alternative is better.
• A simple reason for this is, it would be much easier to
handle one variable than handling 100 different variables
6. Arrays
• When we want to store more than one value at a time
in a single variable, we require an array
• Array is the collection of similar data types stored in
contiguous memory location
• Each data item of an array is called an element.
• Each element is located in separated memory location.
7. • Each of elements of an array have different index no.
known as subscript
• Thus, an array can be considered as a subscripted
variable
ADVANTAGE:
• Array variable can store more than one value at a time
where other variable can store one value at a time.
8. An array of integers
• All elements in the array are of type integer
• The length of the array is 10
• The array is indexed from 0 to 9
3 16 -1 0 8 7 1 55 -3 1
9. An array of integers
• All elements in the array are of type integer
• The length of the array is 10
• The array is indexed from 0 to 9
• The element at index 0 is 3
3 16 -1 0 8 7 1 55 -3 1
index
0
10. An array of integers
• All elements in the array are of type integer
• The length of the array is 10
• The array is indexed from 0 to 9
• The element at index 4 is 8
3 16 -1 0 8 7 1 55 -3 1
index
4
11. An array of integers
• All elements in the array are of type integer
• The length of the array is 10
• The array is indexed from 0 to 9
• The element at index 7 is 55
3 16 -1 0 8 7 1 55 -3 1
index
7
12. An array of integers
• All elements in the array are of type integer
• The length of the array is 10
• The array is indexed from 0 to 9
• The element at index 9 is 1
3 16 -1 0 8 7 1 55 -3 1
index
9
13. An array of Floats and Characters
• Array of Floats
• Array of Characters
3.5 1.4 7.8 8.8 9.4 9.9 3.5 6.8 5.0 5.5
W E L L C O M E B K
15. Array Declaration
• The statement int A;
declares a single integer variable named A
Syntax: type arrayName [ arraySize ];
• The statement int A[5];
float B[10];
declares
• Array variable A that can hold 5 integer values
• Array variable B that can hold 10 float values
• The size and type of arrays cannot be changed after its
declaration.
16.
17. Initializing Array
• Syntax:
type arrayName [ arraySize ]={element1,element2….elementN };
• It's possible to initialize an array during declaration.
int A[5] = {35, 20, 40, 57, 19};
• Another method to initialize array during declaration:
int A[] = {35, 20, 40, 57, 19};
OR
A[0]= 35 ;
A[1]= 20 ;
A[2]= 40 ;
A[3]= 57 ;
A[4]= 19 ;
18.
19. C++ program
• # include<iostream.h>
• #include<conio.h>
• main()
• {
• int x[5] , i;
• cout<<“Enter values into array”<<endl;
• for(i=0;i<5l;i++)
{
• cin>>x[i];
}
• cout<<“The values you entered into array are ”<<endl;
for(i=0;i<5l;i++)
• {
• cout<<x[i]<<endl;
• }
• }
20. TWO – DIMENTIONAL ARRAY:
If you want to store data into table or matrix form at that time you
can use the two dimensional array.
Declaration of two dimentional array:
Syntax : data_type array-name[dim1][dim2];
Where dim1 indicates total rows and dim2 indicates total
columns.
Ex: ITEM 1 ITEM2ITEM 3
SALES MAN 1 310 275 365
SALES MAN 2 210 190 325
SALES MAN 3 405 235 240
SALES MAN 4 260 300 380
21.
22. Initializing two dimentional array:
Ex: int table[2][3] = {0,0,0,1,1,1};
int table[2][3] = {
{0,0,0},
{1,1,1}
} ;
23. Initializing two dimentional array:
When the array is completely initialized with all values,
we need not specify the size of the first dimension. That
is, the statement is permitted.
int table[][3] = {
{0,0,0} ,
{1,1,1)
};
24. C++ program
• # include<iostream.h>
• #include<conio.h>
• main()
• {
• int x[2][3] , i,j;
• cout<<“Enter values into array”<<endl;
• for(i=0;i<2l;i++)
• {
• for(j=0;j<3;j++)
{
• cin>>x[i][j];
}
}
25. • cout<<“The values you entered into array are ”<<endl;
• for(i=0;i<2l;i++)
• {
• for(j=0;j<3;j++)
{
• cout<<x[i][j];
}
}
}