second commit

未命名1.cpp

@@ -1,6 +1,7 @@
 #include<stdio.h>
 #include<string.h>
-	struct book
+#include<stdlib.h>
+	struct book                //
 	{
 		char name[100];
 		char writer[20];
@@ -10,53 +11,74 @@
 		int place;
 		int number; 
 	};
-	struct book a[5]={
+	struct book a[10]=
+	{
 	{"dujie","dujie","hunangongyedaxue",20180104,20.00,1,50},
 	{"lingyu","lingyu","hunangongyedaxue",20181220,38.00,2,38},
 	{"zhoutao","zhoutao","hunangongyedaxue",20181010,27.00,3,27},
 	{"liuyan","liuyan","hunangongyedaxue",20180308,1.00,4,100},
 	{"liubo","liubo","hunangongyedaxue",20180502,20.00,5,38},
+    {"lukebing","lukebing","hunangongyedaxue",20170506,6,320},
+    {"xiangyunfan","xiangyunfan","hunnangongyedaxue",20190321,7,50},
+    {"西游记","吴承恩","中国",10001010,66.00,8,900},
+    {"水浒传","施耐庵","中国",10201127,56.00,9,600},
+	{"红楼梦","曹雪芹","中国",20150325,47.00,10,200}, 
 	};
+	
+		
 int main()
 {
-	int i,n,m,j;
-	char name[100],writer[100];
-
-	flag:;
-	gets(name);
-	gets(writer);
-    for(i=0;i<5;i++)
+	printf("********************======================书店存货清单=====================******************");
+	printf("\n");
+	printf("请输入搜索内容\n"); 
+	system("color A5");
+	int i=0,n;
+	char m,name[100],writer[100];
+	flag:printf("书名");
+	scanf("%s",name);
+	printf("作者名"); 
+	scanf("%s",writer);
+   do
 	{
-		j=0;
-		j++;
+		
 		if(strcmp(name,a[i].name)==0 && strcmp(writer,a[i].writer)==0)
 		{
-			printf("书名");
+			printf("书名 ");
 			puts(a[i].name);
-			printf("作者");
+			printf("作者 ");
 			puts(a[i].writer);
-			printf("出版社");
+			printf("出版社 ");
 			puts(a[i].pulish);
-			printf("日期 %d",a[i].date);
-			printf("价格 %.2f",a[i].price);
+			printf("日期 %d\n",a[i].date);
+			printf("价格 %.2f\n",a[i].price);
 			printf("位置 %d\n",a[i].place);
 		    printf("请输入所需数量\n");
 		    scanf("%d",&n);
 		    if(n<=a[i].number)
-		    printf("%f",(n*a[i].price));
+		    {
+		    	printf("%.2f\n",(n*a[i].price));
+		    	a[i].number-=n;
+			}
 		    else
 			   printf("所需数量不在库存范围内\n");
-		       printf("是否还想买其他书籍 是 y或Y，否 双击回车键\n");
-		       scanf("%d",&m);
-		       if(m=='y'||m=='Y')
-		       j=0;
-		       goto flag; 
-		}
-		if(j=5)
+		    printf("是否还想买其他书籍 是 y或Y，否 按任意键返回\n");
+		    scanf("%s",&m);
+		    if(m=='y'||m=='Y')
+		    {
+		       i=0;
+		       goto flag;
+		    }
+		    else
+		    {
+			    break;
+		    }
+        }
+        i++;
+		if(i==10)
 		{
-			j=0;
+			printf("你想买的书籍不存在!\n");
 			printf("谢谢,再见!");
 		}	
-	}
+	}while(i<10);
 	
 }

未命名2.cpp

@@ -0,0 +1,295 @@
+#include <stdio.h> 
+#include <stdlib.h> 
+#include <string.h>
+#include <conio.h> 
+#define N 2
+struct student 
+{
+ char name[10];
+ char no[100];
+ char sex;
+ int age;
+ char bnote[100];
+};
+void print(bool menu)//打印基本信息
+{
+ if (!menu)
+ {
+ printf(" \t \t \t (欢迎使用本班级档案管理系统)\t\t\t\t\n");
+printf("★*★*★*★*★*★*★*★*★*★ 欢迎进入我们的系统 ★*★*★*★*★*★*★*★*★*★\n\n");
+ printf("学生基本信息录入 ,press 1\n"); 
+}
+ else
+ {
+printf("学生基本信息显示 ,press 2\n"); 
+printf("学生基本信息保存 ,press 3\n"); 
+printf("学生基本信息删除 ,press 4\n"); 
+printf("学生基本信息修改 ,press 5\n"); 
+printf("学生基本信息查询 ,press 6\n"); 
+}
+ printf("退出学生信息系统 ,press 7\n"); 
+}
+bool Check(char pas[6])//密码验证
+{
+ FILE *fp;
+ char ch;
+ char a[7]={" "};
+ int i = 0;
+ if ((fp=fopen("D:\\1.txt","r"))==NULL)
+ {
+ printf("打开文件失败!\n");
+ exit(0);
+ }
+ ch=fgetc(fp);
+ while (ch!=EOF&&i<6)
+ {
+ a[i] = ch;
+ ch=fgetc(fp);
+ i++;
+ }
+ a[6] = '\0';
+ if (!strcmp(pas,a))
+{
+ return true;
+ }
+ else
+ {
+ printf("密码错误\n");
+ return false;
+ }
+ fclose(fp);
+}
+void GetInfo(struct student *arr,int n)//学生基本信息录入
+{
+
+ for (int i = 0;i<n;i++)
+ {
+ printf("输入学生的基本信息:name no sex age bnote\n");
+ scanf("%s %s %c %d %s",arr[i].name,arr[i].no,&arr[i].sex,&arr[i].age,arr[i].bnote);
+ } 
+}
+void Display(struct student* arr,int n)//学生基本信息显示
+{
+ printf("学生信息: Name NO Sex age Note\n");
+ for (int i = 0;i<n;i++)
+ {
+ printf("%12s%12s%12c%12d%12s\n",arr[i].name,arr[i].no,arr[i].sex,arr[i].age,arr[i].bnote);
+ } 
+}
+
+void Save(struct student* arr,int n)//学生基本信息保存，保存在c:\\student.txt
+{
+ FILE * fp;
+ fp= fopen("student.txt","w+");
+ if (fp == NULL)
+ {
+ printf("文件不存在!\n");
+ exit(0);
+ }
+
+ fwrite(arr,sizeof(struct student)*n,n,fp);
+ fclose(fp);
+}
+
+void Modfiy(struct student* arr,int n)//学生基本信息修改
+{
+ char number[100];
+ bool flag=false;
+ char pass[6];
+ printf("请输入密码:\n");
+ scanf("%s",pass);
+if (Check(pass))
+ {
+ printf("修改学生信息:\n");
+ printf("请输入学号:\n");
+ scanf("%s",number);
+ for (int i =0;i<n;i++)
+ {
+ if (!strcmp(number,arr[i].no))
+ {
+ printf("infor: name no sex age note\n");
+ printf("%s %s %c %d %s\n",arr[i].name,arr[i].no,arr[i].sex,arr[i].age,arr[i].bnote);
+ printf("please input information:\n");
+ scanf("%s%s%c%d%s",arr[i].name,arr[i].no,&arr[i].sex,&arr[i].age,arr[i].bnote);
+ Save(arr,n);
+ flag = true;
+ }
+ }
+ if (flag == false)
+ {
+ printf("该学生不存在!:\n");
+ }
+ }
+ 
+}
+
+void Delete(struct student* arr,int n)//学生基本信息删除
+{
+ char number[100];
+ bool flag=false;
+ printf("Delete information:\n");
+ printf("请输入学号:\n");
+ scanf("%s",number);
+ for (int i =0;i<n;i++)
+ {
+ if (!strcmp(number,arr[i].no))
+ {
+ strcpy(arr[i].name," ");
+ strcpy(arr[i].no," ");
+ strcpy(arr[i].bnote," ");
+arr[i].sex = ' ';
+ arr[i].age =0;
+ Save(arr,n);
+ flag = true;
+ }
+ }
+ if (flag == false)
+ {
+ printf("该学生不存在!:\n");
+ }
+}
+void Search(struct student* arr,int n)//学生基本信息查询
+{
+ int temp,i;
+ bool flag=false;
+printf("--------------通过学号查询,press 1-------------\n"); 
+printf("---------------通过姓名查询,press 2-----------\n"); 
+printf("---------------通过性别查询,press 3------------\n"); 
+printf("---------------通过年龄查询,press 4------------\n"); 
+printf("---------------退出,press 5 ------------\n"); 
+scanf("%d",&temp);
+ switch (temp)
+ {
+ case 1://按照学号查询
+ {
+ char num[100];
+ printf("请输入学号:\n");
+ scanf("%s",num);
+ for ( i =0;i<n;i++)
+ {
+ if (!strcmp(num,arr[i].no))
+ {
+ printf("%12s%12s%12c%12d%12s\n",arr[i].name,arr[i].no,
+ arr[i].sex,arr[i].age,arr[i].bnote);
+ flag = true;
+ }
+ }
+ if (!flag)
+ {
+ printf("该学生不存在.\n");
+ }
+ }
+ break;
+case 2://按照名字查询
+ {
+ char num[10];
+ printf("please input name:\n");
+ scanf("%s",num);
+ for ( i =0;i<n;i++)
+ {
+ if (!strcmp(num,arr[i].name))
+ {
+ printf("%-12s%-12s%-12c%-12d%-12s",arr[i].name,arr[i].no,arr[i].sex,arr[i].age,arr[i].bnote);
+ flag = true;
+ }
+ }
+ if (!flag)
+ {
+ printf("该学生不存在.\n");
+ }
+ }
+ break;
+case 3://按照性别查询
+ {
+ char ch;
+ printf("请输入性别:\n");
+ //scanf("%c",&ch);
+ ch = getch();
+ for ( i =0;i<n;i++)
+ {
+ if (ch == arr[i].sex)
+ {
+ printf("%12s%12s%12c%12d%12s\n",arr[i].name,arr[i].no,
+ arr[i].sex,arr[i].age,arr[i].bnote);
+ flag = true;
+ }
+ }
+ if (!flag)
+ {
+ printf("t该学生不存在.\n");
+ }
+ }
+ break;
+case 4://按照年龄查询
+ {
+ char num_age;
+ printf("请输入年龄:\n");
+ scanf("%d",&num_age);
+ for ( i =0;i<n;i++)
+ {
+ if (num_age == arr[i].age)
+ {
+ printf("%12s%12s%12c%12d%12s\n",arr[i].name,arr[i].no,
+ arr[i].sex,arr[i].age,arr[i].bnote);
+ flag = true;
+ }
+ }
+ if (!flag)
+ {
+ printf("该学生不存在.\n");
+ }
+ }
+ break;
+ default:
+ break;
+ }
+}
+int main()
+{
+ struct student arr[N];
+ char ps[6];
+ bool flag =false;
+ printf("请输入密码:\n");
+ scanf("%s",ps);
+ flag = Check(ps);
+ if (flag)
+ {
+ int select;
+ print(false);
+ scanf("%d",&select);
+ while (0<select && select <7 )
+ {
+ switch (select)
+ {
+ case 1:
+ GetInfo(arr,N);
+ print(true);
+ break;
+ case 2:
+ Display(arr,N);
+ print(true);
+ break;
+ case 3:
+ Save(arr,N);
+ print(true);
+ break;
+ case 4:
+ Delete(arr,N);
+ print(true);
+ break;
+ case 5:
+ Modfiy(arr,N);
+ print(true);
+ break;
+ case 6:
+ Search(arr,N);
+ print(true);
+ break;
+ default:
+ break;
+ }
+ printf("请选择:\n");
+ scanf("%d",&select);
+ } 
+} 
+}