if a= 3 b= 2 b= a++ then cout of ++b will be what and how?

Answer 1

it will be 4, here's why. when we declare a, it's 3. when we declare b it's 2. then we set the value if b to a++. now some people might read this and say okay it's setting b equal to a + 1, but that's not actually the case. what the computer reads is set be to a, then increment a. so right now, it's just b = 3. however when we say cout>>++b, the computer reads print increment b, so print b+1.so it will print 4. since ++ is treated as a mathematical operation it follows the same left to right rules. also, when doing increments using ++/--, always put them before the variable since it actually is executed a little faster than putting it after the variable.

Answer 2

b=a++ //b=a a=a+1
++b //b=b+1

Answer 3

thank you guys