W2 Fri morning

Internet problem consume 21 minute.

192.168.31.202
user: administartor
pass: P@ssw0rd

visual studio

console application

c# in virtual machine, with visual studio.

console.writeline is for print some words on the screens.
console.readline is for input some words on the screens

Capital latter does matter.

bool, int, double, long, char, string. int is 32 bit (4bytes). long 64bit (8bytes). double 64bit (8bytes). string is object. int is number, double and float is something such as 3.14. double is bigger than float. bool is only for 0 and 1 , true or false.

num++ refer +1 after line ends, and ++num is refer +1 before line starts.
num+=2 is as same as num =  num + 2


&& is AND,
|| is OR,
^ is XOR, Exclusive OR

== is same,
  
!= is not same.


Computer doesn't waist time and processing.
they skip when ||, not |.