1 ........
2 .......
...
This goes on line by line, but sometimes we need him to execute a part instead of executing a part or repeating a part.
These are process controls.
There are two types of process control statements.
1. Judgment statement
2. Loop statement
The most common judgment statement is if statement, and there are conditional selection statements such as switch in C language.
The common loop statement is for statement.
There are also two kinds of conditional loop statements, such as while loop in C language.
Repeat the loop when looping in Pascal, and so on.
In c# programming, what structures do flow control statements contain and what are they?
I) control flow (branch) statement
1)if-else，if-else if -else if - else
2) Switch box
2) Loop statement
1) for loop
2)while loop
3)do-while loop
In java programming, what types of flow control statements are there in if-else if-else if-else while do-while while-do switch-case-break-deflate for break continue return try-cacth-finally throw?
What are the main statements of matlab program flow control? 1 while statement.
Contrary to a For loop that evaluates a set of commands a fixed number of times, a While loop evaluates a set of statements an indefinite number of times.
General form of While loop
When the expression {mands} ends.
As long as all the elements in the expression are true, the {mands} between the while and end statements will be executed. Usually, the evaluation of an expression gives a scalar value, but the array value is also valid. For arrays, all elements of the resulting array must be true. Consider the following example:
? num = 0； EPS = 1；
? while ( 1+EPS)> 1
EPS = EPS/2；
num = num+ 1；
end
? figure
Quantity =
53
? Earnings per share = 2 * Earnings per share
EPS =
2.2204e-0 16
An example is given to illustrate a method for calculating the special MATLAB value eps. EPS is the minimum value that can be added to 1, and the result is greater than 1, so the accuracy is limited. Here we use uppercase eps, so the value of MATLAB's EPS will not be overwritten. In this example, EPS starts with 1 As long as (1+EPS) >; When 1 is true (non-zero), the command value in the While loop is always found. With the continuous division of EPS by 2, EPS gradually becomes smaller, so that EPS+ 1 is not greater than 1. Remember, this happens because computers use fixed numbers to represent numbers. MATLAB uses 16, so we can only expect EPS to approach 10- 16. ) at this point, (1+EPS) >; 1 is false (zero), so the While loop ends. Finally, EPS is multiplied by 2, because the final division by 2 makes EPS too small.
2 For loop statement
The For loop allows a set of commands to be repeated a fixed predetermined number of times. The general form of the for loop is:
For x = array
(mands)；
end
For each column in the array, {mands} between the for and end statements is executed once. In each iteration, x is designated as the next column of the array, that is, in the nth cycle, x=array (:,n). For example,
For n= 1: 10
x(n)= sin(n * pi/ 10)；
end
x
x =
Column 1 to 7
0.3090 0.5878 0.8090 0.95 1 1 1.0000 0.95 1 1 0.8090
Column 8 to 10
0.5878 0.3090 0.0000
In other words, the first sentence is: Yes ... >>
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There are three kinds of loop control statements in java. There are three kinds of loop control statements in Java, namely while, do…while and for loop.
Do-free cycle
What are the main statements of I =1:6 for j =1:6 if (I = = j) a (I, J) = 1 in MATLAB program flow control? end if(I = = j+ 1 | j = = I+ 1)； a(i，j)= 2； End end end.
What are the flow control statements in C# language? The flow control statements in C# language can be roughly divided into two categories. One is a control statement and the other is a loop statement.
Control statements include: if statement and switch statement.
Loop statements include: while loop, do-while loop, for loop and foreach loop.
These statements have their own grammatical formats, such as:
The syntax format of the if statement is:
Conditional control statement
{
Functional code block;
}。
The syntax format of the switch statement is:
Switch (constant expression)
{
Case constant expression 1:
Executable statement;
Break;
Case constant expression 2:
Executable statement;
Break;
…….
}。
The grammatical formats of other circular sentences can be found on many learning websites, and they are all explained carefully. Here I can recommend several websites to you, such as spike, MSDN, blog garden and so on.
I/O statements in high-level design programming languages can be used in programs. Implement the operation. B control the flow. C allocates and stores the number of d transmissions. A: A realizes the operation.
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