Question

24) A C program has the following declarations: float x = 10.0, y = 5.5, z = 2.1; int i = 3, j = 5, k = 7, m; EVALUATE each of the following expressions. SHOW YOUR WORK, including the type of each sub expression (indicating a float with a decimal point). If the expression would compile and runs but would produce garbage output, mark GARBAGE and EXPLAIN. If you are not confident of your answer, type in, compile and run an appropriate program.

(a) y / x (b) i % j (c) k + z (d) 100 / i – x (e) 324 / m - 12 (f) i % (j - 3) % 3

Answer 1

a)

y/x will print 0.550000 on the console. because y and x both are floats. float divide by float is float

b)

i % j will print 3 because (i=3) is less than (j=5).

c)

k+z will print 9.10000 if the output is stored in float variable. because k is int and z is a float.

d) 100 / i – x will print 23.000000

because 100/3 =33, 33-10.0 =23.000000

e) 324 / m - 12 will compile and run.

But it does not give any output on console because m is undefined.

f)

i % (j - 3) % 3 will give 1 as output

because 3%2 = 1, 1%3=1