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#include<stdio.h>
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extern int n;
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void Seek(void)
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{
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int b,flag=0;//flag为标志变量，用于判断输入学号后是否能正常操作
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char a[LEN];
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if(n!=0)
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{
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printf("\n1.按学号查找:\n");
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printf("2.按学院查找:\n");
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printf("3.按专业查找:\n");
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printf("4.按班级查找:\n");
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printf("请从序号1-4中选择:");
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scanf("%d",&b);
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if(b>=1 && b<=4)
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{
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printf("请输入要查找的名称：");
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scanf("%s",&a);
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p=head;//指针指向开头
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switch(b)
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{
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case 1://按学号查找
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do
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{
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if(strcmp(a,p->StudentId)==0)
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{
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printf("\n信息已被找到：\n学号\t\t姓名\t\t年龄\t性别\t学院\t\t专业\t\t班级\t\t电话\n");
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printf("%-16s%-16s%-8s%-8s%-16s%-16s%-16s%-16s\n",p->StudentId,p->StudentName,p->StudentAge,p->StudentSex,p->StudentCollege,p->StudentMajor,p->StudentClass,p->StudentTelephoneNumber);
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flag=1;
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}
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p=p->next;//指针指向下一个节点
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}while(p!=NULL);
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break;
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case 2://按学院查找
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do
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{
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if(strcmp(a,p->StudentCollege)==0)
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{
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printf("\n学号\t\t姓名\t\t年龄\t性别\t学院\t\t专业\t\t班级\t\t电话\n");
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printf("%-16s%-16s%-8s%-8s%-16s%-16s%-16s%-16s\n",p->StudentId,p->StudentName,p->StudentAge,p->StudentSex,p->StudentCollege,p->StudentMajor,p->StudentClass,p->StudentTelephoneNumber);
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flag=1;
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}
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p=p->next;
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}while(p!=NULL);
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break;
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case 3://按专业查找
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do
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{
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if(strcmp(a,p->StudentMajor)==0)
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{
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printf("\n学号\t\t姓名\t\t年龄\t性别\t学院\t\t专业\t\t班级\t\t电话\n");
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printf("%-16s%-16s%-8s%-8s%-16s%-16s%-16s%-16s\n",p->StudentId,p->StudentName,p->StudentAge,p->StudentSex,p->StudentCollege,p->StudentMajor,p->StudentClass,p->StudentTelephoneNumber);
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flag=1;
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}
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p=p->next;
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}while(p!=NULL);
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break;
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case 4://按班级查找
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do
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{
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if(strcmp(a,p->StudentClass)==0)
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{
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printf("\n学号\t\t姓名\t\t年龄\t性别\t学院\t\t专业\t\t班级\t\t电话\n");
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printf("%-16s%-16s%-8s%-8s%-16s%-16s%-16s%-16s\n",p->StudentId,p->StudentName,p->StudentAge,p->StudentSex,p->StudentCollege,p->StudentMajor,p->StudentClass,p->StudentTelephoneNumber);
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flag=1;
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}
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p=p->next;
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}while(p!=NULL);
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break;
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}
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system("pause");
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if(flag==0)//a的值输入错误
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{
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printf("\nwrong input\n");
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system("pause");
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}
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}
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else//b的值输入错误
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{
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printf("wrong input\n");
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system("pause");
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}
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}
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else//未添加数据
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{
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printf("\nwrong input\n");
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system("pause");
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}
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}
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