c语言编程购物管理系统,C语言一个简单的商店管理系统

1、c语编程购物管理系统,C语个简单的商店管理系统/*数据结构：*/struct shangpinchar name100;char bianhao;float jinjia;float shoujia;int kuchun;struct shangpin *next;/*主模块：*/#include#include#include#include#define LEN sizeof(struct shangpin)main()struct shangpin * ins(struct shangpin *);struct shangpin * del(struct shangpin *);void

2、 quer(struct shangpin *);void disp(struct shangpin *);void savef(struct shangpin *);void quit(struct shangpin *);void menu(void);struct shangpin* init(struct shangpin*);struct shangpin *head=NULL;int cho;head=init(head);while(1)menu();doprintf(please input selection:);scanf(%d,&cho);while(cho6);swit

3、ch(cho)case 1:head=ins(head);break;case 2:head=del(head);break;case 3:quer(head);break;case 4:disp(head);break;case 5:savef(head);break;case 6:quit(head);/*初始化模块*/struct shangpin* init(struct shangpin* head)FILE *fp; /*件指针*/struct shangpin *prev,*cur;if(fp=fopen(aaa.txt,r)=NULL) /*打开失败*/printf(cant

4、open file aaa.txtn);getch();return 0;if(feof(fp)return(NULL);cur=(struct shangpin *)malloc(LEN);fscanf(fp,%s%c%f%f%d,cur-name,&cur-bianhao,&cur-jinjia,&cur-shoujia,&cur-kuchun);head=cur;prev=cur;while(!feof(fp)cur=(struct shangpin *)malloc(LEN);fscanf(fp,%s%c%f%f%d,cur-name,&cur-bianhao,&cur-jinjia,

5、&cur-shoujia,&cur-kuchun);prev-next=cur;prev=cur;prev-next=NULL;return(head);/*菜单模块*/void menu(void)void pristr(void);clrscr(); /*清屏*/pristr();pristr();printf( shangpin C manage system nnn);printf( 1:insert a shangpinn);printf( 2:delete a shangpinn);printf( 3:find a shangpinn);printf( 4:display all

6、shangpinn);printf( 5:save recordn);printf( 6:exit systemn);pristr();pristr();printf(nnn);void pristr(void)printf(-*-*-*-*-*-*=*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*n);/*录模块*/struct shangpin * ins(struct shangpin *head)struct shangpin *newn,*t1;newn=(struct shangpin *)malloc(LEN);printf(

7、please input the shangpins information n);scanf(%s%c%f%f%d,newn-name,&newn-bianhao,&newn-jinjia,&newn-shoujia,&newn-kuchun);if(head=NULL)head=newn;newn-next=NULL;elset1=head;while(t1-next!=NULL)t1=t1-next;t1-next=newn;newn-next=NULL;return(head);/*删除模块*/struct shangpin * del(struct shangpin *head)st

8、ruct shangpin *prev,*cur;char name100;int flag=0;printf(nplease input the name:);scanf(%s,name);if(head=NULL)printf(empry chatn);else if(strcmp(head-name,name)=0)cur=head;head=head-next;free(cur);flag=1;elsecur=head-next;prev=head;while(cur!=NULL)if(strcmp(cur-name,name)=0)prev-next=cur-next;free(cu

9、r);flag=1;break;elseprev=cur;cur=cur-next;if(flag=1)printf(nthe node is deletedn);elseprintf(n the node is not existedn);getch();return(head);/*查询模块*/void quer(struct shangpin *head)struct shangpin *t=head;char name100;int flag=0;printf(nplease input the name:);scanf(%s,name);while(t!=NULL)if(strcmp

10、(t-name,name)=0)flag=1;break;elset=t-next;if(flag=1)printf(the node is foundn);printf(name:%s,bianhao:%c,jinjia:%f,shoujia:%f,kuchun:%dn,t-name,t-bianhao,t-jinjia,t-shoujia,t-kuchun);elseprintf( the node is no foundn);getch();/*显模块*/void disp(struct shangpin *head)struct shangpin *t1;if(head=NULL)pr

11、intf(empty chartn);getch();return;elsefor(t1=head;t1!=NULL;t1=t1-next)printf(%s,%c,%f,%f,%d,t1-name,t1-bianhao,t1-jinjia,t1-shoujia,t1-kuchun);getch();/*存盘模块*/void savef(struct shangpin *head)char s100;FILE *fp;struct shangpin *node=head;printf(please input file name:n);scanf(%s,s);if(fp=fopen(s,w)=NULL)printf(cant open filen);getch();return;while(node!=NULL)fprintf(fp,%s,%c,%f,%f,%d,node-name,node-bianhao,node-jinjia,node-shoujia,node-kuchun);node=node-next;fclose(fp);/*退出模块*/void quit(struct shangpin