c#-Basic Structure

First, if structure

if (chinese==100 && music>70)
            {
               Console.WriteLine ("Excellent"); 
            }
            Console.readkey ();

if (score >=)
            {
                str= "A";      Console.WriteLine ("A");  
            }
            else if (score >=)
            {
                str = "B";    Console.WriteLine ("B");
            }
            else if (score >=)
            {
                str = "C";   Console.WriteLine ("C");
            }
            else if (score >=)
            {
                str = "D";    Console.WriteLine ("D"); 8
            }
            else
            {
                str = "E";    Console.WriteLine ("E");
            }
            Console.WriteLine (str);

Two. For loop

for (int j = 1; J <=9; J + +)
            {for
                (int i = 1; I <=9; i++)
                {
                    Console.Write ("{0}*{1}={2}\t", I, J, I * j);
                }
                Console.WriteLine ();
            }

Three. While loop

<1>

While (student <= 200000)//to how many years up to 200,000 people
            {
                student *= 1.25;//Annual Growth 25%
                year++;
            }

     
       do {
            Console.WriteLine ("Please enter account");
            Name = Console.ReadLine ();
            Console.WriteLine ("Please enter the password");
            PWD = Console.ReadLine ();
        } while (name!= "Admin" | | pwd!= "88888");

<2>break ()

For loops, Abort loops

<3>continue ()

Jump, specific jump code according to the actual situation and set