Loop Development Zhen Jiang Dept. of Computer Science West Chester University West Chester, PA 19383 zjiang@wcupa.edu

Loop Price is right. Sample execution (click on this link to try) Each button in the above sample REPEAT …?

While loop Do-while loop For loop

Sample of evelopment process

Counter control loop Event control loop 1+3+5+7, three loops 5 hello, three loops 1+2+3+ 1+2+4+8 Event control loop 1+3+5 Preset e=e+2 and post-set

Exercises Simple event, already in main part of repetition body:  TV purchase Complete body description (with year updates): population  Event control: 1+2+4+8+... Complex repetition: 1+2+3+4+...+99

Solution