单步运行按钮是()。<img src="https://nimg.ppkao.com/2018-08/wangjing/2018082216024877635.jpg?sign=d5b9dabc74fe0e319bea16a9f924798a&t=62d1ab12" />
A、①
B、②
C、③
D、④
A、①
B、②
C、③
D、④
A、A.<img src="https://img.ppkao.com/2017-07/lizhangyong/2017072013113275935.png" />
B.<img src="https://img.ppkao.com/2017-07/lizhangyong/2017072013113719356.png" />
C.<img src="https://img.ppkao.com/2017-07/lizhangyong/2017072013114039900.png" />
D.<img src="https://img.ppkao.com/2017-07/lizhangyong/2017072013114435190.png" />
A、下面三个程序运行时分别会产生什么结果?为什么?
<img src="https://img.ppkao.com/2019-04/caoguanchen/2019042914464151941.png" /><img src="https://img.ppkao.com/2019-04/caoguanchen/2019042914465677892.png" /><img src="https://img.ppkao.com/2019-04/caoguanchen/2019042914471196821.png" />
A、写出下列程序运行后的输出结果。
<img src="https://img.ppkao.com/2018-07/lina/2018072510444912106.jpg" />
<img src="https://img.ppkao.com/2018-07/lina/2018072510450012840.jpg" />