Check if number is two digit or not
if ( num < 10 num > 99 ) return 0 ; else { sum_of_digits = ( i % 10 ) + Math . floor ( i / 10 ) ; prod_of_digits = ( i % 10 ) * Math . floor ( i / 10 ) ; sum = sum_of_digits + prod_of_digits ; } if ( sum == num ) return 1 ; else return 0 ; }