记一下刷题过程和思路,博主是个菜鸟,只有C语言用的顺,如果有不足之处欢迎大家指正。PAT甲级题目目录100110021003100410011001 A+B Format (20分)Calculate a+b and output the sum in standard format – that is, the digits must be separated into groups of three by commas (unless there are less than four dig