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Array of VariablesArray of VariablesVikram KulkarniVikram KulkarniMBA - SystemsMBA - Systems

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Arrays of VariablesIn this chapter we will:

Introduce the array as a structure forstoring large amounts of dataDiscuss common array operationsIntroduce algorithms for searching andsorting arrays

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Array Types1. One Dimensional Array

2. Two Dimensional Array

3. Multi Dimensional Arrays3D, 4D and so on

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Example of Multi-DimensionalArray

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Declaration of ArrayIt is the same as Variable

Declaration The only difference is thenumber of array elements needto be specified in the [ ]

For two dimensional arrays

Int count[10];Char name[25];

Int marks[10][5];

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Array InitializationArrays can be initialized by giving a listof their elementsIf your list contains n elements the

subscripts will range from 0 to n 1 You do not need to allocate the arrayexplicitly after it is initialized.Int A[5] = {1,2,3,4,5};

Float S[3] = {1.4,2.6, 8.3};

Char city[20] = mumbai;Int d[2][3] = {{23,30},{14,76},{5,21}};

Int arr[] = {5,6,7,0,10,34};

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Array SubscriptsSubscripts are used to access specificarray values.Subscripts starts with 0 and goes up to(n-1).

Int c[7];counts[0] // first variable in countscounts[1] // second variable in counts

counts[6] // last variable in countscounts[7] // error trying to access// variable outside countsc0 c6c5c4c3c2c1

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Sample Program#include Void main (){

Int a[5],i; //single dimension arrayfor (i=0;ia[i];

}cout

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Sample Program#include

void main()

{int A[3][4];

int i;

int j;

for(i=0;i

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Array Operations Copying

#include Void main (){

Int a[5],b[5],i;for (i=0;ia[i];

}b=a; //Copying array

cout

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Excersies - 1Declare the array of 7 elements.Accept the array elements.Reverse the elements.Show the array.

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Excersies 2Write a program to

Input student name (max. 20 char)Input mark for 4 subjects.Calculate total marks.Display results as,