#define
ERROR 0 #define OK 1 struct STU { char name[20]; char stuno[10]; int age; int score; }stu[50]; struct LIST { struct STU stu[50]; int length; }L;
int printlist(struct LIST L) { int i; printf("name stuno age score\n"); for(i=0;i<L.length;i++) printf("%s %s\t%d\t%d\n", L.stu[i].name, L.stu[i].stuno,
L.stu[i].age, L.stu[i].score); printf("\n"); }
int listinsert(struct LIST *L,int i,struct STU e) { struct STU *p,*q; if (i<1||i>L->length+1) return ERROR; q=&(L->stu[i-1]); for(p=&L->stu[L->length-1];p>=q;--p) *(p+1)=*p; *q=e; ++L->length; return OK; }/*ListInsert Before i */
main() { struct STU e; L.length=0; strcpy(e.name,"zmofun"); strcpy(e.stuno,"100001"); e.age=80; e.score=1000; listinsert(&L,1,e); printlist(L); printf("List length now is %d.\n\n",L.length);
strcpy(e.name,"bobjin"); strcpy(e.stuno,"100002"); e.age=80; e.score=1000; listinsert(&L,1,e); printlist(L); printf("List length now is %d.\n\n",L.length); }