driver program to test the above function
int main ( ) { int a [ ] = { 0 , 2 , 4 , 6 , 8 , 10 , 12 , 14 , 15 } ; int b [ ] = { 4 , 10 , 6 , 8 , 12 } ; int n1 = sizeof ( a ) / sizeof ( a [ 0 ] ) ; int n2 = sizeof ( b ) / sizeof ( b [ 0 ] ) ; int k = 3 ; cout << find ( a , b , k , n1 , n2 ) ; return 0 ; }