From 12d594ef54ffb96d21312d495fa50bbff9b430d2 Mon Sep 17 00:00:00 2001
From: m7wzyfpis <1040766652@qq.com>
Date: Mon, 13 Nov 2023 17:03:29 +0800
Subject: [PATCH] search

---
 searching.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 searching.c

diff --git a/searching.c b/searching.c
new file mode 100644
index 0000000..c916bbb
--- /dev/null
+++ b/searching.c
@@ -0,0 +1,92 @@
+#include<stdio.h>
+
+extern int n;
+
+void Seek(void)
+{
+	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
+	char a[LEN];
+	
+	if(n!=0)
+	{
+		printf("\n1.按学号查找:\n");
+		printf("2.按学院查找:\n");
+		printf("3.按专业查找:\n");
+		printf("4.按班级查找:\n");
+		printf("请从序号1-4中选择:");
+		scanf("%d",&b);
+		if(b>=1 && b<=4)
+		{
+			printf("请输入要查找的名称：");
+			scanf("%s",&a);
+			p=head;//指针指向开头
+			switch(b)
+			{
+				case 1://按学号查找 
+					do
+					{	                                      
+						if(strcmp(a,p->StudentId)==0)
+						{
+							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");
+							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);
+							flag=1;
+						}
+						p=p->next;//指针指向下一个节点                            
+					}while(p!=NULL);
+					break;
+				case 2://按学院查找 
+					do
+					{	                                      
+						if(strcmp(a,p->StudentCollege)==0)
+						{
+							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");
+							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);
+							flag=1;
+						}
+						p=p->next;                          
+					}while(p!=NULL);
+					break;
+				case 3://按专业查找 
+					do
+					{	                                      
+						if(strcmp(a,p->StudentMajor)==0)
+						{
+							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");
+							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);
+							flag=1;
+						}
+						p=p->next;                          
+					}while(p!=NULL);
+					break;
+				case 4://按班级查找 
+					do
+					{	                                      
+						if(strcmp(a,p->StudentClass)==0)
+						{
+							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");
+							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);
+							flag=1;
+						}
+						p=p->next;                            
+					}while(p!=NULL);
+					break;
+			 } 
+			system("pause");
+			if(flag==0)//a的值输入错误 
+			{
+				printf("\nwrong input\n");
+				system("pause");
+			}
+		}
+		else//b的值输入错误 
+		{
+			printf("wrong input\n");
+        	system("pause");
+		}		
+	}
+    else//未添加数据 
+    {
+		printf("\nwrong input\n");
+		system("pause");
+    }
+} 
\ No newline at end of file