printf问题
main()
{
struct test
{
int m1; char m2; float m3;
union uu{ char u1[5]; int u2[2];} ua;
}myaa;

printf{ "%d\n ", sizeof(struct test)); //这里报错了，说是差什么东东，奇怪
}

[解决办法]
printf{ "%d\n ", sizeof(struct test));

帅哥函数是()不是{)