C语言循环问题
http://zhidao.baidu.com/question/197055010.html?fr=search&word=4%2C%C8%F4%D4%CB%D0%D0%CA%B1%CA%E4%C8%EB%3A35%2F%3C%BB%D8%B3%B5%3E%2C%D4%F2%D2%D4%CF%C2%B3%CC%D0%F2%B5%C4%D4%CB%D0%D0%BD%E1%B9%FB%CA%C7%28%29main%28%29%7Bfloatx%2Cy%3Bcharo%3Bdoubler%3Bscanf%28%22%25f%25f%25c%22%2C%26x%2C%26y%2C%26o%29%3Bswitch%28o%29%7Bcase%27&ie=gbk ——百度知道
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答:(3)输入3 5 /回车之后,x==3, y==5, o=='/'。进入switch语句,因为o=='/',所以执行r=x/y; 即r=3/5=0.6,输出会补上一些无意义的0,从而变为0