Driver code
int main ( ) { int arr [ ] = { 0 , 10 , 2 , -10 , -20 } ; int arr_size = sizeof ( arr ) / sizeof ( arr [ 0 ] ) ; int missing = findMissing ( arr , arr_size ) ; cout << " The ▁ smallest ▁ positive ▁ missing ▁ number ▁ is ▁ " << missing ; return 0 ; }