琐碎小问题
1.char a[]="a0\na0\n"
sizeof(a)等于多少？是怎么算的？
2.printf（"%d,%d",++m,m）是先算++还是？我自己试的时候怎么感觉两种情况都出现过的呀？
3.printf("%d%d%d",m,n)这样的话是怎么用的？给具体讲讲呀！
[解决办法]
vs2008结果
1. 7，（a,0,'\n',a,0,'\n','\0'）;
2. 表达式的计算顺序应该是由编译器决定吧。记得好像是……。
C, like most languages, does not specify the order in which the operands of an operator are evaluated. (exceptions are && || ?: and ",") for example x = f() + g();
3. 输出2,3+随机值。
If there are more arguments than there are format specifications, the extra arguments are ignored. The results are undefined if there are not enough arguments for all the format specifications.
[解决办法]
