Question

If int a=2, and int b=3, what value would the following expression return? a<5 && b<5

a. undefined
b. 1
c. 0​

Answer 1

Answer:

+1

If int a=3; int b=2; b=a++ cout <<++b,what is the output?

c++

11th March 2017, 3:04 PM

Wis Vaurasi

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+14

The output will be 4. Here is how the logic works on your case:

Given :

a = 3

b = 2

Then :

b = a++

which means take a value to b and then increment the a value. so b value is same as a (before the increment), so with that statement, their value become:

b = 3 (same as a before increment)

a = 4 (the value change because we got increment)

Then evaluate the last statement:

++b => this means that we increment the value before we use the value. so in the end.

so,

cout << ++b; // will result: 4