What is the method of VBA program flow control?

The methods of VBA program flow control are: selection control (branch control), loop control and sequence control. VBA is a structured programming method. The structured programming method requires that the program can only be composed of three basic control structures: sequence, branch and loop.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

VBA program flow control methods include sequence control, selection control and loop control, which also correspond to the three basic control structures of structured programming.

• Sequential structure programming is the simplest. Just write the corresponding statements in the order of solving the problem. Its execution order is from top to bottom, in sequence. .

• The selection structure is used to judge given conditions, judge certain conditions based on the results of the judgment, and control the flow of the program based on the results of the judgment.

• The loop structure can reduce the workload of repeated writing of the source program and is used to describe the problem of repeatedly executing a certain algorithm. This is the program structure that best utilizes the computer's expertise in programming. The loop structure can be seen as a combination of a conditional statement and a turnaround statement.

Sequential structure:

The sequential structure is to execute sentence after sentence from beginning to end until the last sentence is executed. As shown below

Select structure

After reaching a certain node, it will decide which one to go to next based on the result of a judgment. Branch direction execution. As shown in the figure below

Loop structure

The loop structure has a loop body, and the loop body is a piece of code. For loop structures, the key is to decide how many times to execute the loop body based on the judgment result;

For more programming-related knowledge, please visit:Programming Video ! !

The above is the detailed content of What is the method of VBA program flow control?. For more information, please follow other related articles on the PHP Chinese website!