Linear Searh Array

#include<stdio.h>
#define SIZE 100

int linearSearch( const int array[], int key, int size );

int main( void )
{
    int a[ SIZE ];
    int x;
    int searchKey;
    int element;
   
    for( x = 0; x < SIZE; x++ ){
         a[x] = 2 * x;
}

printf( "Enter integer search key:\n" );
scanf( "%d", &searchKey );

element = linearSearch( a, searchKey, SIZE );

if( element != -1 ){
    printf( "Found value in element %d\n", element );
}
else{
     printf( "Value not found\n" );
     }
    
     system ("pause");
     return 0;
    
}

int linearSearch( const int array[], int key, int size )
{
    int n;
   
    for( n = 0; n < size; ++n ){
         if( array[n] == key ){
             return n;
             }
             }
            
             return -1;
            
    }