摘要： #include "stdio.h"void main(){ int a=sizeof(unsigned long); int b=sizeof(short int); struct Student { unsigned long id; char name[30]; char calss[30]; }oStu1; for (int i=0;i<30;i++) { oStu1.name[i]=i; } for (i=0;i<30;i++) { oStu1.calss[i]=i; } printf(" %d",sizeof(oStu1));// 阅读全文