struct 结构体大小的判断

#include using namespace std;struct A{char c;};struct B{char c;int tmp;};struct C{char c;char t[3];int tmp;};struct D{int tmp;char c;};struct E{int tmp;char c[4];};int main(){cout<<sizeof(A)<<endl;cout<<sizeof(B)<<endl;cout<<sizeof(C)<<endl;cout<<sizeof(D)<<endl;cout<<sizeof(E)<<endl;return 0;}//结果分别为 18888