Array is a linear list of homogeneous elements, stored at successive memory locations in consecutive order.
C programming language provides a data structure called the array, that can store a fixed size sequential collection of elements of same data type.
An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type. For example, if your class strength is 50 then your roll numbers are rollnumber1, rollnumber2, rollnumber3 …… rollnumber50.
Instead of declaring individual variables, such as rollnumber1, …, and rollnumber50, you declare one array variable such as rollnumb.
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But in C, array always starts from 0 and end with size-1 and be written as
rollnumb[0], rollnumb[1]……….rollnumb[49]
and be declared as
int rollnumb[50];
means declaration syntax is
datatype arrayname [size];
Types of array
- One-Dimensional
- Multi-Dimensional
One Dimensional Arrays
Array having only one subscript variable is called one-dimensional array and also called as single dimensional array or linear array.
Example of one dimensional array definition
int marks[5] = {50, 85, 60, 55, 90};
And represented as
marks[0] =50
marks[1] = 85
marks[2] = 60
marks[3] = 55
marks[4] = 90
A specific element in an array is accessed by an index.
Program 1 : Input and output of an Array
#include <stdio.h>
void main()
{ int marks[5],i;
printf(“Input of Array marks”);
for (i=0; i<5; i++)
scanf(“%d”, &marks[i]);
printf(“Output of Array marks”);
for (i=0; i<5; i++)
printf(“marks[%d] = %d ”, i, marks[i]);
}
Input of Array marks
(if you entered )
50
85
60
55
90
(you will get)
Output of Array marks
marks[0] =50
marks[1] = 85
marks[2] = 60
marks[3] = 55
marks[4] = 90
Multi Dimensional Arrays
Multidimensional arrays are defined in much the same manner as one dimensional arrays, except that a separate square brackets required in each subscript.
Thus, a two dimensional array will require two pairs of square bracket,
aij -> a[i][j] -> a[rows][coulmn]
a three dimensional array will require three pairs of square brackets, and so on
aijk -> a[i][j][k] -> a[page][rows][coulmn]
Operations like
Traversing in arrays
Insertion in Arrays
Deletion in Arrays
Sorting and Searching in Array
Programming With C : Lecture 1
Programming With C : Lecture 2
hello sir i’m yours student inder josan from cheeka.
i learn more about c language from here.
sir,
i request you if you will discuss with us file handing( read file).,
Thanks Inder, We are uploading all the lectures, It will take time.
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