2017.02.24c# Jump Statement, iterative method, exhaustive method, exception statement processing.

One, jump statement
(1) Break:

Code:

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.Linq;4 usingSystem.Text;5 6 namespace@break7 {8     class Program9     {Ten         Static voidMain (string[] args) One         { AInt32 A =0; -                  for(a=0;a< -; a++) -                 { the Console.WriteLine (a); -                     if(a==Ten) -                          -                     Break; +                      -                      +                 } A  at console.readline (); -         } -     } -}

If there is no break, the code from 11 straight output to 999, but broke the appearance of interrupted, when the a=10, out of the output, to 10 interrupted, only output to the 10,break function is to jump out of the area of the loop, the effect of the cycle of the area.

(2) Continue
Code:

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.Linq;4 usingSystem.Text;5 6 namespace@break7 {8     class Program9     {Ten         Static voidMain (string[] args) One         { AInt32 A =0; -                  for(a=0;a< -; a++) -                 { the                      -                     if(a==Ten) -                    -                         Continue; + Console.WriteLine (a); -                 } +  A console.readline (); at         } -     } -}

The result of this code output is 0---24, there is No 10 in the middle, 10 when the time out of the output 10, but also continue to output 11 cycle, so the output does not have 10.continue effect is when this situation occurs, jump out of this cycle, and continue the next loop.

Second, the poor lifting method
Code:

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.Linq;4 usingSystem.Text;5 6 namespacePoor Lifting Method7 {8     class Program9     {Ten         Static voidMain (string[] args) One{//100 yuan, gloves 5 yuan, socks 2 yuan, a total of several cases AInt32 A =0; -Int32 B =0; -              for(A =0; A <= -; a++) the             { -                  for(b =0; b <= -; b++) -                 { -                     if((A *5) + (b *2) == -) +                     { -Console.WriteLine ("can buy"+ A +"Gloves only,"+ B +"socks only. "); +                     } A  at                 } -             } -  - console.readline (); -  -  in  -  to  +  -  the         } *     } $}

This code prints out how many socks and gloves to buy and what the difference is.
The method of exhaustive is to enumerate the number of cases.

Third, exception statement processing

Try Catch

Code

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.Linq;4 usingSystem.Text;5 6 namespaceJob7 {8     class Program9     {Ten         Static voidMain (string[] args) One         { A              for (; ; ) -{Console.WriteLine ("Please enter a number"); -                 theString b=console.readline (); -                Try -                { -Int32 C =Convert.ToInt32 (b); +                     -Console.WriteLine ("I entered a number, and this time I'll spare you."); +                     Break; A                } at                Catch -                { -Console.WriteLine ("input is not a number, re-enter! "); -                } -  -             } in console.readline (); -         } to     } +}

This code means that the user enters the number, enter other prompt error, let the user re-enter, until the user entered the correct number to end the loop.
The try{code may or may not be correct, and if correct, continue running if the error runs catch}
Catch{try Error running here}
Finally{either right or wrong will run here}

2017.02.24c# Jump Statement, iterative method, exhaustive method, exception statement processing.