分析下面程序的执行流程并写出输出结果。<img src="https://nimg.ppkao.com/2019-05/wangjing/2019050610390661046.jpg?sign=b293e142f64dbf410237bd075d7d0c20&t=62d64896" /><img src="https://nimg.ppkao.com/2019-05/wangjing/2019050610391370462.jpg?sign=e9c88560852794ff2bcc193a16d7e374&t=62d64896" />