Single dimensional array

Single Dimensional Array

A list of items can be given one variable name using only one subscript and such a variable is called a single-subscripted variable or a one dimensional array.

Declaration

Like any other variable, array must be declared before they are you used. The general form of Array declaration is 

Syntax:-

Data_type array_name[size of array];

Ex:-int num[10];

>> the data type specifies the type of an element that you will be contained in the array such as int, float ,or char.

>>The size indicate the maximum number of elements that can be stored inside the array.

>> The size of Array should be constant value.

Example:-

float ht[20];

->>declares the height to be an array containing 20 real elements.

int group[15];

->>declares the group as an array to contain a maximum of 15 integers constant .

char ch[12];

->>declares the ch as a character array (string) variable that can hold a maximum of 12 characters.

Ex:-int num[10];

Memory allocation:-

Single-dimensional array are always allocated contiguous blocks of memory.

   This implies that all the elements in an array are always stored next to each other.

memory=no.of bytes × size

Memory allocation in array

1. Value->num[0]=3
2. Value->num[1]=6
3. Value->num[2]=9

Program on single dimensional array

(W.A.P to find min,max of an array)

#include<iostream.h>

#include<conio.h>

class Arr

{

int num[10],i,min,max,sz;

public:

void insz()

{

cout<<"Enter size of array\n";

cin>>sz;

}

void in_arr();

int min_arr();

int max_arr();

};

void Arr :: in_arr()

{

cout<<"Enter values in array\n";

for(i=0;i<sz;i++)

cin>>num[i];

}

int Arr :: min_arr()

{

min=num[0];

for(i=1;i<sz;i++)

{

if(num[i]<min)

min=num[i];

}

cout<<"min="<<min<<endl;

}

int Arr :: max_arr()

{

max=num[0];

for(i=1;i<sz;i++)

{

if(num[i]>max)

max=num[i];

}

cout<<"max="<<max<<endl;

}

int main()

{

Arr a;

clrscr();

a.insz();

a.in_arr();

a.min_arr();

a.max_arr();

getch();

}

Out Put:-