Question

Evaluate the following C++ expressions where a, b, c are integers and d, f
are floating point numbers. The values are a = 5, b = 6 and d=3.5
(a)c = a + + - (b + +) * (--d)
(b)f = (++b) * b - a++​

Answer 1

Well here we make an assumption that the compiler we are using is turboC++ though that won't make much of a difference

Explanation:

c=a++ -(b++)*(--d)

=5(as a is post increment so no change) - 6(b is post ++) *(2.5)(d is pre --)

=5-15.0(as d was float so the c will be type casted to float none the less )

= -10.0

but as c is declared integer , output will be -10

Now f=7*7-5(first b gets pre incremented so next b is also 7 but a no change as it's post increment)=44

f won't be type casted as there are no data types of type float but as it is declared float, output will be 44.0

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