王玉鑫

```c
#include
#include
#include
#define MAXSIZE 100

typedef struct {
int cardNum;
char name[8];
char major[10];
int classNum;
}libCardInfo;

typedef struct{
libCardInfo cardInfo;
}recordInfo;

typedef struct{
recordInfo r[MAXSIZE+1];
int length;
}table;

void input(table *tab){
char s='Y';
tab->length=1;
while(s=='Y'||s=='y'&&tab->length<=MAXSIZE){
printf("\n请输入借书卡卡号：");
scanf("%d",&tab->r[tab->length].cardInfo.cardNum);
printf("请输入持卡人姓名：");
scanf("%s",tab->r[tab->length].cardInfo.name);
printf("请输入持卡人系别：");
scanf("%s",tab->r[tab->length].cardInfo.major);
printf("请输入持卡人班号：");
scanf("%d",&tab->r[tab->length].cardInfo.classNum);
printf("是否继续录入？（Y/N）:");
getchar();
scanf("%c",&s);
tab->length++;
}
}
void output(libCardInfo *info){
printf("\t \n");
printf("\t 借书证卡号：%d\n",info->cardNum);
printf("\t 持卡人姓名：%s\n",info->name);
printf("\t 持卡人系别：%s\n",info->major);
printf("\t 持卡人班号：%d\n",info->classNum);
printf("\t \n");
}

void shellinsertsort(table *tab){
int i,j,d;
d=tab->length/2;
while(d>=1){
for(i=d+1; ilength; i++){
tab->r[0]=tab->r[i];
j=i-d;
while(j>0&&tab->r[0].cardInfo.cardNumr[j].cardInfo.cardNum){
tab->r[j+d]=tab->r[j];
j=j-d;
}
tab->r[j+d]=tab->r[0];
}
d=d/2;
}
for(i=1; ilength; i++){
output(&tab->r[i].cardInfo);
}

}

void seqSearch(table *tab){
int i=1, j=1;
char major[10];
printf("\n请输入你要查找的系名：");
scanf("%s",major);
while(ilength){
if(!strcmp(tab->r[i].cardInfo.major,major)){
output(&(tab->r[i].cardInfo));
j=0;
}
i++;
}
if(j) printf("\t\t 『没有该系别的记录！』\n");
}

int main() {
int x, set;
table tab;
while(set){
printf("操作序号：");
printf("\n");
printf("1.录入借书证基本信息 \n");
printf("\n");
printf("2.输出已有借书证信息 \n");
printf("\n");
printf("3.系名查找借书证信息 \n");
printf("\n");
printf("4.退出借书证管理系统 \n");
printf("\n");
printf("操作选择：");
scanf("%d",&x);
switch(x){
case 1:input(&tab);break;
case 2:shellinsertsort(&tab);break;
case 3:seqSearch(&tab);break;
case 4:set=0;printf("系统退出成功！\n");break;
default: printf("没有该选项对应的操作！");
}
system("pause");
system("cls");
}
return 0;
}