Two dimensional array

                                                 Two dimensional Array

                  Two dimensional array syntax

                  datatype variablename arraylenth;

                  Ex:-
                            int a[][];
                            int a[10][10],b[10][10];

                  /* Sum of all the elements in the matrix */
         
                  #include<stdio.h>
                  main()
                  {
                          int j,k,a[2][2],sum=0;
                          printf("\nEnter the elements for matrix a:");
                          for(j=0;j<2;j++)
                          {
                               for(k=0;k<2;k++)
                               {
                                    printf("\nEnter a[%d][%d]:",j,k);
                                    scanf("%d",&a[j][k]);
                                }
                           }
                           printf("\n the matrix is...:\n");
                           for(j=0;j<2;j++)
                           {
                               for(k=0;k<2;k++)
                               {
                                     printf("\t%d",a[j][k]);
                                     sum=sum+a[j][k];
                                }
                                printf("\n");
                            }

         printf("\nthe sum of all elements in the matrix is:%d",sum);
       
          }

 

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One dimensional array example 3

   /*  Program to displaying numbers in reverse order */
        #include<stdio.h>
        main()
       {
            int a[10],k;
            clrscr();
            for(k=0;k<10;k++)
           {
                 printf("\nEnter the element for a[%d]:",k);
                 scanf("%d",&a[k]);
           }
                 printf("\nwriting the numbers in the reverse order:\n");
                 for(k=10-1;k>=0;k--)
                 printf("\nthe element in indexa[%d]=%d",k,a[k]);
                 getch();
       }

  
    

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One dimensional array example 2

                   One dimensional array example

           /* program to calculate sum of 10 numbers in an array */

           #include<stdio.h>
           main()
           {
               int array[10],j,sum=0;
               clrscr();
               printf("\nEnter 10 numbers :");
               for(j=0;j<=9;j++)
               scanf("%d",&array[j]);
               printf("\ncalculating the sum of elements in the array:");
               for(j=0,sum=0;j<=9;j++)
               sum=sum+array[j];
               printf("\nsum of the elements of the array =%d",sum);
               getch();
            }
 

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One dimensional array example 1

                      One dimensional Array

        One dimensional array  syntax
     
        datatype variablename arraylenth;
    
        Ex:-
                  int a[];
                  int a[10],b[10];

                  #include<stdio.h>
                  main()
                 {
                     int a[5],i;
                     clrscr();
                     for(i=0;i<5;i++)
                     {
                        printf("\nEnter the elements for a[%d]:",i);
                        scanf("%d",&a[i]);
                      }
                      printf("original order is....\n");
                      for(i=0;i<5;i++)
                      printf("\n the element in index a[%d]=%d",i,a[i]);
                      getch();
                   }

              

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Array

Array

An array  is a collection of similar elements.

Their similar elements can be all integers or floats or chars.

The array of characters is called as a string or word.

The array of integers or floats is called by the original name(n) as array.

The first element in the  array  is numbered as ‘0’ , there fore  the last element

Is one less than the original size(n-1) of the array.

An array is also termed as “Subscripted variable” .

The elements inside an array are stored in continuous memory locations ,irrespective  of its size.

Array declaration :-  

datatype variablename arraylenth;
Example :-   
                         int array[];
                         int a[10];
                         int a[3]={4,6,12};

Arrays are divided into 2 types.
They are,
                    
                        * one dimensional array.
                        * Two/multi dimensional array.


     

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