2.struct a{ char name[10];
int age;
｝aa[3]={{"abc",20},{"def",21},{"ghi"，22}};
main()
{ struct a *paa=aa;
printf("%c%c%c"，(*(paa+1)).name[0]
(*paa++).name[1]
(*(paa+1)).name[2]);
｝