Ask the master to help me write a program of VB loop buttons.

Save the following information in a "text document" with the name "1" echo off

echo 10000>

echo createobject(""^).sendkeys "">>

pause saves the extension to"bat"Just run it.

The key interval can be changed at "10000".

1、do while...loop: loops when the condition is true, which checks the condition before entering the loop.

2、do...loop while: When the condition is true, the condition is checked after the loop is run at least once.

3、do until...loop: When the condition is false for loops, check the condition before entering the loop.

4、do..loop until: When the condition is false for loops, check the condition after the loop runs at least once.

5、while...wend: Loop when the condition is ture.

6、for...next: Specify the number of cycles and use the counter to repeat the statement.

7、for each...next: For each item in the collection or element in the array, repeat each statement.

8、for each...in: Takes each element from a collection.

9. Loop nesting: It means that a small loop can be included in a large loop.

10. Forcibly exiting the cycle knows so much, hehe11

Loop statements include for-next, while-wend, and do-loop statements.

Let me introduce you to the simple usage of these statements:

for-next statement:

for variable = initial value to final value [step size].

Circulating bodies. next

When the value of the loop variable is within the range of the initial value to the final value, the statement block in the loop body is executed once, and the initial value is increased by one step length. If the value of the loop variable is not within the range of the initial value to the final value, the loop is exited and the next statement is executed. Flowchart of the for loop statement to excavate the thought line.

Wherein, step step can be omitted, and when omitted, step size = 1

For example: private sub form activate().

for i = 1 to 5 step 1

print i

nextend sub

In this example, after running the program, the following text will be written on the form:

Analysis: The variable i is cycled 5 times from the initial value 1 to the final value 5, and the value of i is output each time, and the value of i is added to the value of step 1So, but in the second loop, the value of i becomes 2

After cycle 5, the value of i becomes 5When relooping, i becomes 6, and the final value of 5 is over-checked, so the loop ends, and vb starts to run ** after the next statement.

do-loop statement:

DO Loop Body.

[exit do]

loops between do and loop. The exit do statement is optional because it is set to run the exit do statement when certain conditions are met, that is, to exit the loop.

For example: private sub form activate().

dim i as integer

i = 1do

print i

i = i + 1 'Each cycle increases the value of i by 1

if i > 5 then exit do 'When the value of i is greater than 5 (i.e., after loop 5), exit the loop.

loopend sub

It works the same as in the example above.

The above instructions are definitely not copied, and it is okay to give a little hard work, thank you

Since I'm here, I'll give you a very simple and simple pretending to be a burning matching digging loop statement: 1 100 self-adding.

As a result, it was");

int sum = 0;

int i;

for (i = 1; i<=100; i++)sum = sum + i;;

VB cycle in the for cycle is the most used, and when you use it, just learn it now, or you will learn it now, or you will learn it now, if you don't practice, you will forget it in a short time.

The 3 variables s, t, and u are the number of cycles of the 3 cycles, and the value of u is the easiest for x, and the number of cycles is u=3

The t-value is followed by x loops 3 times and y is nested within x.

x=1 y=1 to 1

x=2 y=1 to 2

x=3 y=1 to 3

So y=1+2+3=6 times t=6

z is nested within y.

x=1 y=1 to 1 z=1 to 3 3 cycles x=2 y=1 to 2 z=1 to 3 z=2 to 3 3+2 cycles.

x=3 y=1 to 3 z=1 to 3 z=2 to 3 z=3 to 3 3+2+1 cycles.

3 + 5 + 6 = 14 cycles.

Answer 14,6,3