x++ & ++x ?

Question

what is mean?

Answer 1

Used alone, they are both equivalent to x = x + 1.
When used in an expression, they are either evaluated before the increment (x++) or after it (++x).

int a, b;
a = 1;
b = 1;
cout << a++; //prints 1, and a is now 2
cout << ++b; //prints 2, and b is now 2

Answer 2

int num = 0;
while(++num < 6)
Console.WriteLine(num);

num is initialized at 0. Each loop turn, num is increased by 1, and if it is strictly lower than 6, the value of num is printed. This will print 1 2 3 4 5 (one number per line). Had it be num++ instead of ++num, the values printed would have been 1 2 3 4 5 6.

Answer 3

false

Answer 4

what is false?

Answer 5

Why is not 0 at the beginning when is ++num? Starts from 1 anyway

Answer 6

X++

Answer 7

int num = 0;
while(++num < 6)
Console.WriteLine(num);

i can not understand this program!!!