Assigning the ascii value of the character
x = 0 ; NEW_LINE y = 0 ; NEW_LINE if ( len_a > 0 ) : NEW_LINE INDENT x = int ( a [ len_a - 1 ] ) + int ( '0' ) ; NEW_LINE len_a -= 1 ; NEW_LINE DEDENT if ( len_b > 0 ) : NEW_LINE INDENT y = int ( b [ len_b - 1 ] ) + int ( '0' ) ; NEW_LINE len_b -= 1 ; NEW_LINE DEDENT