Array Operations in C Programming Language

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] ) ;

}