Day 4: loop structure (while, do... While, ),... While1. Loop Structure (while, do... While,)
1.1. What is a loop structure
In daily life, there will be a lot of things that need to be done repeatedly, such as four seasons of every year, 7 days of
4.3 Loop control statementsIn the real world, there is such a phenomenon:As long as the current oil in the tank is less than the tank capacity of 100 liters, the fuel tank has been refueling;has been continuously for the motherland hard work, as
4.3 Loop control statementsIn the real world, there is such a phenomenon:As long as the current oil in the tank is less than the tank capacity of 100 liters, the fuel tank has been refueling;has been continuously for the motherland hard work, as
ForeachPhp Tutorial 4 (not php 3) includes the foreach structure, which is similar to perl and other languages. This is just a simple way to traverse arrays. Foreach can only be used for arrays. An error occurs when you try to use it for another
4.3.3 for Loop: Within a range ... Each of them ...Since the while statement and Do...while ... Statements have been able to meet the needs of our expression loop phenomenon, why should C + + specifically provide a For statement to express the loop
loop statements and loop controlObjective:Turbo C 2.0 provides three basic looping statements: For statements, while statements, and do-while statements.first, the Loop statement(a), for loopFor (;;)StatementInitialization is always an assignment
4.3.3 for Loop: Within a range ... Each of them ...Since the while statement and Do...while ... Statements have been able to meet the needs of our expression loop phenomenon, why should C + + specifically provide a For statement to express the loop
Using Do-while statements to form loopsThe Do-while statement is characterized by executing the loop body first, and then judging whether the cyclic condition is tenable. Its general form is:
Do
statement while
(expression);
It
A Bash Script: A while loop in the Loop Structure
Like other languages, the Bash loop structure also contains the while statement.Basic Structure
While condition do loop body done
Like the for statement, its loop body is also do... Done structure.
C + + while loop
The general form of the while statement is as follows:
while (expression) statement
The action is to execute the inline statement in the while statement when the specified condition is true (the expression is not 0).
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