According to the problems that the beginners have in designing the loop structure,this paper analyzes the distinction among DO WHILE statement,FOR statement and SCAN statement,and gives some examples for the flexible use of DO WHILE loop statement.

Along with the computer science technology\'s rapid development,more and more different kinds of programming languages appear,but three basic structures in language learning (Sequence Structure,Selection Structure and Loop Structure) always keep same with no change.

Reading and Using of Loop Structure Statement in Visual FoxPro

Teaching "Circulation Structure" in Visnal Foxpro programming;

In this method,cycle structure is used to query Web data,users input their selection,then procedure will automatic obtain data and save it in appointed range,the realization of these function need our VBA program.

People have to compile the programs of cycle structure when they have to apply the symmetrical systematic sampling.

This paper discusses the teaching methods of cycle structure in C language.

Analysis on circulating control characteristic of open to air check valve for high pressure feed-water system;

Application of Single Transducer Cycle Control on Water Supply System at Constant Pressure;

For the spark-ignition LPG-methanol engine whose electronic-controlled injection was done in the inlet,the cycle injection quality ratio of LPG-methanol,the injection timing of LPG lagging behind methanol,and the influence of ambient temperature on cold start performance were researched on the base of cycle control method.

In the application of PLC Technology, the frequent faults in the program design of PLC time sequence and cycle control are that sequence act and cycle control controlled by TIM can′t be implemented.