第一个课设作业：商品进销存管理程序 （C语言）"/>
第一个课设作业：商品进销存管理程序 （C语言）
1、题目描述
设计一个商品进销存管理程序，该程序具有以下功能：
（1）录入商品信息；
（2）给定商品编号，修改该商品信息；
（3）给定商品编号，删除该商品信息；
（4）录入商品的进货与销售信息；
（5）给定商品编号或商品名，查看该商品及库存信息；
（6）统计功能：提供一些统计各类信息的功能。
源代码：
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#define LEN1 sizeof(struct product)
#define LEN2 sizeof(struct sales)
#define LEN3 sizeof(struct purchase)static int shu=0;struct product
{int id; //商品编号char name[20]; //商品名称double price; //商品单价int stock; //商品库存struct product* next; //指向下一个商品信息的指针
};struct sales
{int id; //商品IDdouble pri; //销售价格 int quantity; //销售量struct sales* next; //指向下一个销售信息的指针
};struct purchase
{int id; //商品IDdouble pr; //进货价格int num; //进货量struct purchase* next; //指向下一个进货信息的指针
};struct product *creat1(int n,struct product *h)//创建商品信息链表
{struct product *head=NULL,*p1=NULL,*p2=NULL,*p3=NULL;int i,j,f=0;p3=h;for(i=1;i<=n;i++){ p1=(struct product *)malloc(LEN1);printf("请输入商品编号:");scanf("%d",&j);while(p3){if(p3->id==j){printf("以存在相同ID商品,请更换ID重新输入!");p3=NULL;f=1;break;}else{p3=p3->next;}}if(f==1){i--;f=0;continue;}p1->id=j;printf("请输入商品名字:"); scanf("%s",&p1->name);printf("请输入商品价格:");scanf("%lf",&p1->price);printf("请输入商品库存:");scanf("%d",&p1->stock);p1->next=NULL;if(i==1) head=p1;else p2->next=p1;p2=p1;}return(head);
};struct product *save1(struct product *p1,int q,int s)//销售商品时改变商品信息中的商品数
{struct product *pm=NULL,*p2_sa=NULL;pm=p1;int i=0;while (pm!=NULL)//查找对应商品{if(pm->id==q){pm->stock-=s;i=1;break;}pm=pm->next;}if(!i){printf("未找到对应商品,请先录入商品信息或检查商品ID是否错误!\n");}return p2_sa;//返回空指针
}struct product *save2(struct product *p1,int q,int s)//进货时改变商品信息中的商品数量
{struct product *pm=NULL,*p2=NULL;pm=p1;int i=0;while (pm!=NULL)//找到对应商品{if(pm->id==q){pm->stock+=s;i=1;break;}pm=pm->next;}if(!i){printf("未找到对应商品,请先录入商品信息或检查商品ID是否错误!\n");}return p2;
}struct sales *creat2(int n,struct product *p)//创建商品销售链表
{struct sales *p1_sl=NULL,*p2=NULL,*head=NULL;struct product *m;int i,q,s;for(i=1;i<=n;i++){ p1_sl=(struct sales *)malloc(LEN2);printf("请输入商品id:\n");scanf("%d",&q);p1_sl->id=q;printf("请输入销售价格:\n"); scanf("%lf",&p1_sl->pri);printf("请输入销售数量:\n");scanf("%d",&s);p1_sl->quantity=s;m=save1(p,q,s);//调用函数改变商品数量p1_sl->next=NULL;if(i==1) head=p1_sl;else p2->next=p1_sl;p2=p1_sl;}return(head);
};struct purchase *creat3(int n,struct product *p)//创建商品进货链表
{struct purchase *p1_pu=NULL,*p2=NULL,*head=NULL;struct product *m;int i,q,s;for(i=1;i<=n;i++){ p1_pu=(struct purchase *)malloc(LEN3);printf("请输入商品id:\n");scanf("%d",&q);p1_pu->id=q;printf("请输入进货价格:\n");scanf("%lf",&p1_pu->pr);printf("请输入进货数量:\n");scanf("%d",&s);p1_pu->num=s; m=save2(p,q,s);//调用函数改变商品数量p1_pu->next=NULL;if(i==1) head=p1_pu;else p2->next=p1_pu;p2=p1_pu; }return(head);
};void print1(struct product *head)//打印商品信息的函数
{struct product *p1_h=NULL;int i;p1_h=head;while (p1_h!=NULL){printf("__________________________\n");printf("|商品ID:%d \n",p1_h->id);printf("|商品名字:%s \n",p1_h->name);printf("|商品价格:%lf \n",p1_h->price);printf("|商品库存:%d \n",p1_h->stock);printf("__________________________\n\n");p1_h=p1_h->next;}p1_h=NULL;
}void print2(struct sales *head)//打印商品销售信息的函数
{struct sales *p1_s=NULL;int i;p1_s=head;while (p1_s!=NULL){printf("__________________________\n");printf("|商品ID:%d \n",p1_s->id);printf("|商品价格:%lf \n",p1_s->pri);printf("|出售量:%d \n",p1_s->quantity);printf("__________________________\n\n");p1_s=p1_s->next;}
}void print3(struct purchase *head)//打印商品进货信息的函数
{struct purchase *p1_p=NULL;int i;p1_p=head;while (p1_p!=NULL){printf("__________________________\n");printf("|商品ID:%d \n",p1_p->id);printf("|商品价格:%lf \n",p1_p->pr);printf("|进货量:%d \n",p1_p->num);printf("__________________________\n\n");p1_p=p1_p->next;}
}struct product *conect1(struct product *p1_c1,struct product *p2_c1)//商品信息链表链接函数
{struct product *p3_c1=NULL;p3_c1=p1_c1;while (1){if(p1_c1->next==NULL){break;}p1_c1=p1_c1->next;}p1_c1->next=p2_c1;return (p3_c1);
}struct sales *conect2(struct sales *p1_c2,struct sales *p2_c2)//商品销售信息链表链接函数
{struct sales *p3_c2=NULL;p3_c2=p1_c2;while (p3_c2->next!=NULL){p3_c2=p3_c2->next;}p3_c2->next=p2_c2;return (p1_c2);
}struct purchase *conect3(struct purchase *p1_c3,struct purchase *p2_c3)//商品进货信息链表链接函数
{struct purchase *p3_c3=NULL;p1_c3=p1_c3;while (p1_c3->next!=NULL){p1_c3=p1_c3->next;}p1_c3->next=p2_c3;return (p1_c3);
}
//以上为输入模块函数，下面为功能函数struct product *find(struct product *p1_pf)//商品信息查找函数
{ struct product *p2_pf=NULL;int i=0,n,f=0,l=1;char a[20];p2_pf=p1_pf;while (l){ printf("__________________________________\n"); printf("|1.使用ID查找 | 2.使用名字查找|\n");printf("|3.退出 | |\n");printf("__________________________________\n");printf("请输入1、2来使用对应功能:");scanf("%d",&f);printf("\n....................................................\n\n");if(f==1){printf("请输入您要查找的商品的id:\n");scanf("%d",&n);while(p2_pf){if(p2_pf->id==n){printf("__________________________________\n");printf("商品名字:%s\n",p2_pf->name);printf("商品价格:%lf\n",p2_pf->price);printf("商品库存:%d\n",p2_pf->stock);printf("__________________________________\n");p2_pf=NULL;i=1;l=0;break;}else{p2_pf=p2_pf->next;}}}else if(f==2){printf("请输入您要查找的商品的名字:\n");scanf("%s",&a);while(p2_pf){if(strcmp(a,p2_pf->name)==0){printf("__________________________________\n");printf("商品名字:%s\n",p2_pf->name);printf("商品价格:%lf\n",p2_pf->price);printf("商品库存:%d\n",p2_pf->stock);printf("__________________________________\n");p2_pf=NULL;i=1;l=0;break;}else{p2_pf=p2_pf->next;} }}else if(f==3){printf("退出\n");break;}else{printf("未知操作,请重新输入!\n");}}return p2_pf;
}struct product *delet(struct product *p1_de)//商品信息删除函数
{struct product *p2_de=NULL,*p3_de=NULL;int i=0,n;p2_de=p1_de;p3_de=p1_de;scanf("%d",&n);while (p2_de){if(p2_de->id==n){printf("这是您要删除的商品的信息：\n");printf("商品名字：%s\n",p2_de->name);printf("商品价格：%lf\n",p2_de->price);printf("商品库存：%d\n",p2_de->stock);p3_de->next=p2_de->next;free(p2_de);break; }p3_de=p2_de;p2_de=p2_de->next;}p2_de=NULL;return p2_de;
}struct product *change(struct product *p1_ch)//商品信息修改函数
{struct product *p2_ch=NULL;int i=0,t[5],d,j,n;p2_ch=p1_ch;scanf("%d",&n);while (p2_ch){if(p2_ch->id==n){printf("这是您要修改的商品的信息：\n");printf("1.商品ID:%d\n",p2_ch->id);printf("2.商品名字:%s\n",p2_ch->name);printf("3.商品价格:%lf\n",p2_ch->price);printf("4.商品库存:%d\n",p2_ch->stock);printf("请问您要修改几项数据呢?\n");scanf("%d",&d);printf("请输入您要修改的数据(1、2、3、4分别表示ID、名字、价格、库存,请以空格为间隔):\n");for(j=0;j<d;j++){scanf("%d",&t[j]);}for(j=0;j<d;j++){switch (t[j]){case 1:printf("正在修改商品ID,请问您要将商品ID改成:\n");scanf("%d",&p2_ch->id);break;case 2:printf("正在修改商品名字,请问您要将商品名字改成:\n");scanf("%s",&p2_ch->name);break;case 3:printf("正在修改商品价格,请问您要将商品价格改成:\n");scanf("%lf",&p2_ch->price);break;case 4:printf("正在修改商品库存,请问您要将商品库存改成:\n");scanf("%d",&p2_ch->stock);break;default:break;}}printf("这是您修改过的商品信息:\n");printf("1.商品ID:%d\n",p2_ch->id);printf("2.商品名字:%s\n",p2_ch->name);printf("3.商品价格:%lf\n",p2_ch->price);printf("4.商品库存:%d\n",p2_ch->stock);}p2_ch=p2_ch->next;}p2_ch=NULL;return p2_ch;
}struct product *load(struct product *head)//商品信息文件加载函数
{FILE *fp_l;if((fp_l=fopen("menu.txt","r"))==NULL){printf("加载商品信息文档出错。\n");exit(1);}else{printf("加载商品信息文档成功。\n\n\n");}int flag=1;int id_t; //商品编号char name_t[20]; //商品名称double price_t; //商品单价int stock_t; //商品库存struct product *p1_lo=NULL,*p2_lo=NULL,*p3_lo=NULL;p2_lo=(struct product *)malloc(LEN1);p2_lo->next=NULL;while(!feof(fp_l))//检测文件是否结束{fscanf(fp_l,"%d",&id_t);fscanf(fp_l,"%s",name_t);fscanf(fp_l,"%lf",&price_t);fscanf(fp_l,"%d",&stock_t);if(flag){p2_lo->id=id_t;strcpy(p2_lo->name,name_t);p2_lo->price=price_t;p2_lo->stock=stock_t;flag=0;p1_lo=p2_lo;p3_lo=p2_lo;}else{p2_lo=(struct product *)malloc(LEN1);p2_lo->next=NULL;p2_lo->id=id_t;strcpy(p2_lo->name,name_t);p2_lo->price=price_t;p2_lo->stock=stock_t;p3_lo->next=p2_lo;p3_lo=p3_lo->next;}shu++;}fclose(fp_l);return p1_lo;
}; struct sales *load_sl(struct sales *head)//商品销售信息文件加载函数
{FILE *fp_l;if((fp_l=fopen("sales form.txt","r"))==NULL){printf("加载销售文档出错。\n");exit(1);}else{printf("加载销售文档成功。\n");}int flag=1;int id_sl; //商品IDdouble pri_sl; //销售价格 int quantity_sl; //销售量struct sales *p1_lo=NULL,*p2_lo=NULL,*p3_lo=NULL;p2_lo=(struct sales *)malloc(LEN2);p2_lo->next=NULL;while(!feof(fp_l)){fscanf(fp_l,"%d",&id_sl);fscanf(fp_l,"%lf",&pri_sl);fscanf(fp_l,"%d",&quantity_sl);if(flag){p2_lo->id=id_sl;p2_lo->pri=pri_sl;p2_lo->quantity=quantity_sl;flag=0;p1_lo=p2_lo;p3_lo=p2_lo;}else{p2_lo=(struct sales *)malloc(LEN2);p2_lo->next=NULL;p2_lo->id=id_sl;p2_lo->pri=pri_sl;p2_lo->quantity=quantity_sl;p3_lo->next=p2_lo;p3_lo=p3_lo->next;}}fclose(fp_l);return p1_lo;
}; struct purchase *load_pu(struct purchase *head)//商品进货信息文件加载函数
{FILE *fp_l;if((fp_l=fopen("purchase form.txt","r"))==NULL){printf("加载进货文档出错。\n");exit(1);}else{printf("加载进货文档成功。\n");}int flag=1;int id_pu; //商品IDdouble pr_pu; //进货价格int num_pu; //进货量struct purchase *p1_lo=NULL,*p2_lo=NULL,*p3_lo=NULL;p2_lo=(struct purchase *)malloc(LEN3);p2_lo->next=NULL;while(!feof(fp_l)){fscanf(fp_l,"%d",&id_pu);fscanf(fp_l,"%lf",&pr_pu);fscanf(fp_l,"%d",&num_pu);if(flag){p2_lo->id=id_pu;p2_lo->pr=pr_pu;p2_lo->num=num_pu;flag=0;p1_lo=p2_lo;p3_lo=p2_lo;}else{p2_lo=(struct purchase *)malloc(LEN3);p2_lo->next=NULL;p2_lo->id=id_pu;p2_lo->pr=pr_pu;p2_lo->num=num_pu;p3_lo->next=p2_lo;p3_lo=p3_lo->next;}}fclose(fp_l);return p1_lo;
}; struct product *write(struct product *head_wr)//商品信息写入函数
{FILE *fp_wr;struct product *p1_wr=NULL;if((fp_wr=fopen("menu.txt","w+"))==NULL){printf("加载文档出错。\n");exit(1);}while(head_wr!=NULL){fprintf(fp_wr,"\n%d\n",head_wr->id);fprintf(fp_wr,"%s\n",head_wr->name);fprintf(fp_wr,"%lf\n",head_wr->price);fprintf(fp_wr,"%d",head_wr->stock);head_wr=head_wr->next;}fclose(fp_wr);printf("数据写入成功!\n\n\n");return p1_wr;
}struct sales *dailys(struct sales *head)//商品销售日志写入函数
{FILE *fp_sl;struct sales *p1_sle=NULL;p1_sle=head;if((fp_sl=fopen("sales form.txt","w+"))==NULL){printf("加载文档出错。\n");exit(1);}while(p1_sle!=NULL){fprintf(fp_sl,"\n%d\n",p1_sle->id);fprintf(fp_sl,"%lf\n",p1_sle->pri);fprintf(fp_sl,"%d",p1_sle->quantity);p1_sle=p1_sle->next;}fclose(fp_sl);printf("数据写入成功!\n");p1_sle=NULL;return p1_sle;
}struct purchase *dailyp(struct purchase *head)//商品进货日志写入函数
{FILE *fp_ph;struct purchase *p1_ph=NULL;if((fp_ph=fopen("purchase form.txt","w+"))==NULL){printf("加载文档出错。\n");exit(1);}p1_ph=head;while(p1_ph!=NULL){fprintf(fp_ph,"\n%d\n",p1_ph->id);fprintf(fp_ph,"%lf\n",p1_ph->pr);fprintf(fp_ph,"%d",p1_ph->num);p1_ph=p1_ph->next;}fclose(fp_ph);printf("数据写入成功!\n");p1_ph=NULL;return p1_ph;
}struct product *sort(struct product *head,int i)//商品信息排序函数（使用冒泡排序法）
{struct product *p1_sot=NULL,*p2_sot=NULL,*p3_sot=NULL;int t,j,k,p,s,fl=0;char n[20];for(t=0;t<i-1;t++){p1_sot=head;p3_sot=p1_sot->next;for(j=0;j<i-1;j++){if(p3_sot->price>p1_sot->price){strcpy(n,p3_sot->name);p=p3_sot->price;s=p3_sot->stock;k=p3_sot->id;strcpy(p3_sot->name,p1_sot->name);p3_sot->price=p1_sot->price;p3_sot->stock=p1_sot->stock;p3_sot->id=p1_sot->id;p1_sot->price=p;p1_sot->stock=s;p1_sot->id=k;strcpy(p1_sot->name,n);fl=1;}p3_sot=p3_sot->next;p1_sot=p1_sot->next;}}if(fl){printf("排序成功!\n");}return p2_sot;
}struct sales *sumulates(struct sales *head)//商品销售数量与总额统计函数
{struct sales *p1_sml=NULL,*p2_sml=NULL;int num=0,i;double sum=0;p1_sml=head;while (p1_sml!=NULL)//逐个遍历{num+=p1_sml->quantity;sum+=(p1_sml->pri)*(p1_sml->quantity);p1_sml=p1_sml->next;}printf("_________________________\n");printf("|销售数量:%d \n",num);printf("|销售总额:%lf \n",sum);printf("_________________________\n\n");return p2_sml;
}struct purchase *sumulatep(struct purchase *head)//商品进货数量与总额统计函数
{struct purchase *p1_smu=NULL,*p2_smu=NULL;int num=0,i;double sum=0;p1_smu=head;while (p1_smu!=NULL){num+=p1_smu->num;sum+=(p1_smu->pr)*(p1_smu->num);p1_smu=p1_smu->next;}printf("_________________________\n");printf("|进货数量:%d \n",num);printf("|进货总额:%lf \n",sum);printf("_________________________\n");return p2_smu;
}int main(){struct product *head1=NULL,*head2=NULL,*flag=NULL;struct sales *list1=NULL,*list2=NULL,*flag1=NULL;struct purchase *form1=NULL,*form2=NULL,*flag2=NULL; int n,i,j=0;list1=load_sl(list1);form1=load_pu(form1);head1=load(head1);while(j!=11){system("cls");//清屏操作，以下同理printf("______________________________________________________________________\n"); printf("....................欢迎使用商品进销管理系统..........................\n");printf("______________________________________________________________________\n");printf(". 您可以继续进行的操作是: .\n");printf(". 1.录入商品销售信息。 .\n");printf(". 2.录入商品进货信息。 .\n");printf(". 3.录入商品信息。 .\n");printf(". 4.查找商品信息。 .\n");printf(". 5.删除商品信息。 .\n");printf(". 6.修改商品信息。 .\n");printf(". 7.统计销售额。 .\n");printf(". 8.统计进货额。 .\n");printf(". 9.按价格升序排列商品。 .\n");printf(". 10.打印所有商品信息。 .\n");printf(". 11.结束程序。 .\n");printf("______________________________________________________________________\n");printf("请输入1、2、3、4、5、6、7、8、9、10、11来进行对应操作。\n请问您要进行的操作是:");scanf("%d",&j);printf("\n即将执行操作%c......",j);printf("......................................................................\n\n\n\n\n\n\n");system("cls");if(j==1){list2=creat2(1,head1);if(list1){//判断是否已经生成链表list1=conect2(list1,list2);//将新链表与旧链表链接}else{list1=list2;}printf("\n按任意键继续......\n");system("pause");}else if(j==2){form2=creat3(1,head1);if(form1){//判断是否已经生成链表form1=conect3(form1,form2);//将新链表与旧链表链接}else{form1=form2;}printf("\n按任意键继续......\n");system("pause");}else if(j==3){printf("请输入您要录入的商品数量：");scanf("%d",&n);head2=creat1(n,head1);if(head1!=NULL){//判断是否已经生成链表head1=conect1(head1,head2);//将新链表与旧链表链接}else{head1=head2;}shu+=n;printf("这是您输入的商品信息：\n");print1(head2);printf("\n按任意键继续......\n");system("pause");}else if(j==4){printf("请输入您要查找的商品的id:\n");flag=find(head1);flag=NULL;printf("\n按任意键继续......\n");system("pause");}else if(j==5){printf("请输入您要删除的商品的id:\n");flag=delet(head1);shu--;printf("\n按任意键继续......\n");system("pause");}else if(j==6){printf("请输入您要修改的商品的信息的id:\n"); flag=change(head1);printf("\n按任意键继续......\n");system("pause");}else if(j==8){flag2=sumulatep(form1);printf("\n按任意键继续......\n");system("pause");}else if(j==7){flag1=sumulates(list1);printf("\n按任意键继续......\n");system("pause");}else if(j==9){flag=sort(head1,shu);printf("\n按任意键继续......\n");system("pause");}else if(j==10){print1(head1);printf("\n按任意键继续......\n");system("pause");}else if(j==11){break;}else{printf("未知操作,即将返回\n");} }flag2=dailyp(form1);//存储flag1=dailys(list1);flag=write(head1);system("cls");printf(".......................程序结束..........................\n");printf(".......................感谢使用..........................\n");shu=0;system("pause");return 0;
}
更多推荐
第一个课设作业：商品进销存管理程序 （C语言）
发布评论