Solution for Quiz 1

Problem 1:

• 1 / 4 + 17 % 4 + 1.0 / 2.0 =

  0 + 1 + 0.5 =

  1.5

• (3 == 2 + 1) && (2 > 4) || (! (2 != (1 + 1))) =

  (3 == 3) && (2 > 4) || (! (2 != 2)) =

  TRUE && FALSE || (! FALSE) =

  TRUE && FALSE || TRUE =

  FALSE || TRUE =

  TRUE

  It is ok to use 1 for TRUE and 0 for FALSE.

Problem 2:

• The quantities a, b, c, and r1 should be declared as floating point variables:

  float a, b, c, r1;

• A C++ expression that computes the value of r1:

  r1 = (- b + sqrt ( b * b - 4.0 * a * c )) / (2.0 * a);

Problem 3: Here is the complete program (without comments though)