Driver Function
int main ( ) { int arr1 [ 6 ] = { 1 , 5 , 7 , 2 , 9 , 14 } ; cout << numOfCombinations ( arr1 , 6 ) << " STRNEWLINE " ; int arr2 [ 4 ] = { 3 , 6 , 9 , 12 } ; cout << numOfCombinations ( arr2 , 4 ) << " STRNEWLINE " ; return 0 ; }