<p>请将程序补充完整，使此程序的运行结果为1 2 5 11 21。<br><img src="https://learnfile.20230611.cn/learnAppQuestion/16/20/1620e7b28fcd8434cb5a2930550f4fe7.png" style="width: 100%;height: auto;"><br><img src="https://learnfile.20230611.cn/learnAppQuestion/b6/11/b611f776d0 - C+ + 程序设计(04737)