In this article I would like to share with you a program to show you the different array operations in C language.
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Program Listing
#include <stdio.h>
#include <conio.h>
#define MAX 5
void insert ( int *, int pos, int num ) ;
void del ( int *, int pos ) ;
void reverse ( int * ) ;
void display ( int * ) ;
void search ( int *, int num ) ;
void main( )
{
int arr[5] ;
insert ( arr, 1, 11 ) ;
insert ( arr, 2, 12 ) ;
insert ( arr, 3, 13 ) ;
insert ( arr, 4, 14 ) ;
insert ( arr, 5, 15 ) ;
printf ( "\nElements of Array: " ) ;
display ( arr ) ;
del ( arr, 5 ) ;
del ( arr, 2 ) ;
printf ( "\n\nAfter deletion: " ) ;
display ( arr ) ;
insert ( arr, 2, 222 ) ;
insert ( arr, 5, 555 ) ;
printf ( "\n\nAfter insertion: " ) ;
display ( arr ) ;
reverse ( arr ) ;
printf ( "\n\nAfter reversing: " ) ;
display ( arr ) ;
search ( arr, 222 ) ;
search ( arr, 666 ) ;
getch( ) ;
}
/* inserts an element num at given position pos */
void insert ( int *arr, int pos, int num )
{
/* shift elements to right */
int i ;
for ( i = MAX - 1 ; i >= pos ; i-- )
arr[i] = arr[i - 1] ;
arr[i] = num ;
}
/* deletes an element from the given position pos */
void del ( int *arr, int pos )
{
/* skip to the desired position */
int i ;
for ( i = pos ; i < MAX ; i++ )
arr[i - 1] = arr[i] ;
arr[i - 1] = 0 ;
}
/* reverses the entire array */
void reverse ( int *arr )
{
int i ;
for ( i = 0 ; i < MAX / 2 ; i++ )
{
int temp = arr[i] ;
arr[i] = arr[MAX - 1 - i] ;
arr[MAX - 1 - i] = temp ;
}
}
/* searches array for a given element num */
void search ( int *arr, int num )
{
/* Traverse the array */
int i ;
for ( i = 0 ; i < MAX ; i++ )
{
if ( arr[i] == num )
{
printf ( "\n\nThe element %d is present at %dth position.", num,
i + 1 ) ;
return ;
}
}
if ( i == MAX )
printf ( "\n\nThe element %d is not present in the array.", num ) ;
}
/* displays the contents of a array */
void display ( int *arr )
{
/* traverse the entire array */
int i ;
printf ( "\n" ) ;
for ( i = 0 ; i < MAX ; i++ )
printf ( "%d\t", arr[i] ) ;
}
