loop statement

For loop four elements: initial condition, cyclic condition, loop body, state change.1. for (Var a=i;i{Loop Body (example sum=sum+i sum is output)} Examples1-20 off, not a penny.20-30 off 10 points per pass30-40 off/off 2040-49 off 30 points

1 for(intA = 5; a > 0; a--)2 {3 for(intb = 1; b )4 {5System.out.print ("");6 }7 for(intc = 5; C >= A; c--)8 {9System.out.print ("B");Ten }

Learn sass @[email protected] @for @while @eachI. Condition judgment-@if @elseExample:1 @mixin Blockorhidden ($boolean: true) {2@if$boolean {3@debug"$boolean is #{$boolean}";4 Display:block;5 }6@Else {7@debug"$boolean is #{$boolean}";8

1 Connection query: You can implement multiple table queries by using the Join operator.1.1 Join onSelect Name,mark from student join Mark on Student.id=mark.studentidLeft JOIN Connect-left JoinSelect Name,mark from student left join Mark on Student.

Branch statements:if (conditional statement)Syso1 ...;ElseSyso2 ...;Syso3 ...;If there is no curly brace, the function of the If,else statement is to end with the next semicolon.Loop statement:1) for (expression 1; expression 2; expression 3)

The For loop is the most complex loop structure in PHP. Its behavior is similar to the C language. The syntax for the For loop is: for (EXPR1; expr2; expr3) statement The first expression (EXPR1) is evaluated unconditionally once before the loop

While loopThe general form of a while loop is:while (expression) {Statement block}Where an expression is called a loop condition, a statement block is called a loop body.The while statement means that the value of the expression is evaluated first,

Using system;using system.collections.generic;using system.linq;using system.text;namespace ConsoleApplication42{ Class Program {static void Main (string[] args) {for (int i = 1; I i; x--) Console.Write (""); for (y =

More commonly used for foreach Copy the Code code as follows: $price =array (' Apple ' =>10, ' orange ' =>20, ' banner ' =>30);foreach ($price as $key = $value){echo $key. ' = '. $value. '';}Echo '';?> There's a more advanced and common

C # loop statement for loop (nested while exhaustive iteration ), For loop nesting is similar to if else Example:Print the matrix. The outer loop corresponds to the row and the inner loop corresponds to the column. For (int k = 1; k {For (int I = 1;

C # loop statement for loop, Loop: execute a code segment repeatedly. Four elements of a loop: initial condition, cyclic condition, cyclic body, and state change.For (initial condition; cyclic condition; state change){Loop body} Given the initial

/**1. The old for statement can no longer be used. For example: for (int i=0; i2. New way: For i in 0..3. The new way of reverse for I in (0..*/Class Viewcontroller:uiviewcontroller{Override Func Viewdidload (){Super.viewdidload ()Additional setup

#While Loopnumbers=[1,2,4,6,7,8,12]enent=[]odd=[] whileLen (Numbers) >0:number=Numbers.pop ()if(number% 2 = =0): enent.append (number)PrintNumber'is even' PrintnumbersElse: odd.append (number)PrintNumber'not even'PrintenentPrintOdd#continue

Looping statements are a very important part of getting started with a variety of programming languages.Here are a few exercises:A game, the first 20 off is each of its own scores, 21-30 off each off is 10 points, 31-40 off, each off is 20 points, 41

print ' x ', ' Y ' equalsprint ' x 'print ' Y 'Output x Y-------------------------------------------------------------------------------When importing a function from a module, you can1, Import Somemodule/ /import module, using function:

Conditional statements1#!/bin/Bash2 3Read-p"input your name:"name4 #第一种判断5 if["$name"=="Mike" ];then #注意这里用 [...] When comparing two strings, the variable $name quoted, and there are spaces on both sides of "= ="; "[" followed by a space; "]"

1 for statementSyntax formatFor variable in value (or loop condition)DoCommandDoneSend mail to multiple users#！ /bin/bashDomain=163.comFor user in Tom Hom JemDoMail-s "Happy New Year" [email protected] $domain DoneTo print 9*9 multiplication

Tag: Extract the user under the shell and display the relevant user namePractice One:Write a script1, add 10 users user1 to User10, password with the user name, but requires only the user does not exist in the case can be added;Extension: accepts a

Package four;public class Fouronetwo {public static void Main (String args[]) {Double sum = 0,a = 1;int i = 1;while (I {sum = sum+a;i = i+1;A = A * (1.0/i);}SYSTEM.OUT.PRINTLN (sum);}}Explanation: When I=1, Sum=1, i=2, a=1* (1/2);When i=2, SUM=1+1*1/

While loopSuitable for environments where the proposition is true when the loop is executedWhen a proposition is true, it enters a loop, and a proposition is a false exit loop.Or when the condition is met, it goes into the loop.Syntax format:While