超市商品管理系统代码

超市商品管理系统

中文提示

By AzxXINER

#include

#include

#include

#include

//------------------------------------------------------------- //Max count of good,def 100 temporary

//------------------------------------------------------------- #define MAX 100

int current_cnt = 0;

//------------------------------------------------------------- //Good Information Definition

//------------------------------------------------------------- typedef struct GoodInfo{

char good_id[30];

char good_name[30];

char good_price[10];

char good_discount[10];

int good_amount;

int good_remain;

}GoodInfo;

GoodInfo *Goods[MAX];

//------------------------------------------------------------- //free goodinfo memory

//------------------------------------------------------------- void freeGoodInfo()

{

int i = 0;

for(i = 0;i < MAX;i++)

free(Goods[i]);

Goods[i] = NULL;

}

//-------------------------------------------------------------

//read a goodinfo from file

//------------------------------------------------------------- GoodInfo* readGoodInfo(FILE* fp)

{

GoodInfo* pGoodInfo = (GoodInfo*)malloc(sizeof(GoodInfo));

fscanf(fp,"%s",&pGoodInfo->good_id);

fscanf(fp,"\t%s",&pGoodInfo->good_name);

fscanf(fp,"\t%s",&pGoodInfo->good_price);

fscanf(fp,"\t%s",&pGoodInfo->good_discount);

fscanf(fp,"\t%d",&pGoodInfo->good_amount);

fscanf(fp,"\t%d\n",&pGoodInfo->good_remain);

return pGoodInfo;

}

//-------------------------------------------------------------

//check whether the file exists or not

//-------------------------------------------------------------

int check_nullfile()

{

FILE *fp = fopen("F:\\课程\\C语言程序设计\\综合实验2超市商品管理系统\\goodinfo.txt","r");

//file not exist

if(!fp){

printf("商品信息初始化文件不存在!\n请您放到E盘根目录！\n");

fp = fopen("F:\\课程\\C语言程序设计\\综合实验2超市商品管理系统\\goodinfo.txt","w");

fclose(fp);

}

//file already exist

else{

int temp;

//res for try to read file if file null feof() can't jarge if file is null

int res = fscanf(fp,"%d",&temp);

fclose(fp);

if(res<=0)

return -1;

else

return 1;

}

}

//-------------------------------------------------------------

//initialize

//-------------------------------------------------------------

void info_init()

{

int i = 0,j = 0;

int res = check_nullfile();

FILE *fp = fopen("F:\\课程\\C语言程序设计\\综合实验2超市商品管理系统\\goodinfo.txt","r");

for(i=0; i

Goods[i] = NULL;

}

while( res == 1 && !feof(fp) ){

Goods[j] = readGoodInfo(fp);

j++;

current_cnt++;

}

fclose(fp);

}

//-------------------------------------------------------------

//write one goodinfo into file

//-------------------------------------------------------------

void writeGoodInfo(FILE* fp,GoodInfo* pGoodInfo)

{

fprintf(fp,"%s\t",pGoodInfo->good_id);

fprintf(fp,"%s\t",pGoodInfo->good_name);

fprintf(fp,"%s\t",pGoodInfo->good_price);

fprintf(fp,"%s\t",pGoodInfo->good_discount);

fprintf(fp,"%d\t",pGoodInfo->good_amount);

fprintf(fp,"%d\n",pGoodInfo->good_remain);

}

//-------------------------------------------------------------

//write all goodinfos into file

//-------------------------------------------------------------

void info_flush()

{

int i = 0;

FILE *fp = fopen("F:\\课程\\C语言程序设计\\综合实验2超市商品管理系统\\goodinfo.txt","w");

for(i=0; i

if(Goods[i])

writeGoodInfo(fp,Goods[i]);

}

freeGoodInfo();

fclose(fp);

}

//-------------------------------------------------------------

//output

//-------------------------------------------------------------

void info_output(int i)

{

printf("商品序号：%s\t商品名称：%s\n", Goods[i]->good_id,

Goods[i]->good_name);

printf("商品价格：%s\t商品折扣：%s\t",

Goods[i]->good_price,Goods[i]->good_discount);

printf("商品数量：%d\t商品剩余：%d\t\n\n" ,Goods[i]->good_amount, Goods[i]->good_remain);

}

//-------------------------------------------------------------

//modify a goodinfo

//-------------------------------------------------------------

int info_change()

{

int i;

if ( -1 == (i = info_search()) )

return 0;

else

{

printf("输入新的商品信息（以换行符区分信息条目）：\n");

scanf("%s\n",Goods[i] -> good_id);

scanf("%s\n",Goods[i] -> good_name);

scanf("%s\n",Goods[i] -> good_price);

scanf("%s\n",Goods[i] -> good_discount);

scanf("%d\n",&Goods[i] -> good_amount);

scanf("%d",&Goods[i] -> good_remain);

printf("商品信息修改成功！\n\n");

return 0;

}

}

//------------------------------------------------------------- //delete a goodinfo

//------------------------------------------------------------- int info_dele()

{

int i;

if (current_cnt > 0)

{

if ( -1 == (i = info_search()) )

return 0;

else

{

free(Goods[i]);

//Goods[i] = NULL;

printf("删除商品信息成功！\n\n");

current_cnt--;

return 0;

}

}

else

{

printf("没有任何商品信息！");

return 0;

}

}

//------------------------------------------------------------- // search a goodinfo

//------------------------------------------------------------- int info_search()

{

int i;

char name[20];

scanf("%s",name);

for ( i = 0; i < current_cnt; i++)

if (strcmp(name,Goods[i]->good_name) == 0)

{

printf("查询到以下信息：\n");

info_output(i);

return i;

}

if (i >= current_cnt)

{

printf("该商品不存在！\n\n");

return -1;

}

}

//------------------------------------------------------------- //insert one goodinfo

//------------------------------------------------------------- void info_insert()

{

int i = current_cnt;

if (i

{

Goods[i] = (GoodInfo*)malloc(sizeof(GoodInfo));

scanf("%s\n",Goods[i] -> good_id);

scanf("%s\n",Goods[i] -> good_name);

scanf("%s\n",Goods[i] -> good_price);

scanf("%s\n",Goods[i] -> good_discount);

scanf("%d\n",&Goods[i] -> good_amount);

scanf("%d",&Goods[i] -> good_remain);

current_cnt++;

printf("插入商品信息成功！\n\n");

info_output(i);

}

else

printf("商品信息过多，无法再插入新的信息！");

}

//------------------------------------------------------------- //start UI

//------------------------------------------------------------- void start()

{

printf("超市商品管理系统\n"

"************************************\n"

"** 1.商品信息的修改： **\n"

"** 2.删除某个商品信息： **\n"

"** 3.查找某个商品信息： **\n"

"** 4.插入某个商品信息： **\n"

"** 其他.退出系统. **\n"

"************************************\n"

"** 请输入你的选择：");

}

//-------------------------------------------------------------

//main entry

//-------------------------------------------------------------

int main(void)

{

int choose = 0;

info_init();

while(1)

{

start();

scanf("%d",&choose);

switch (choose)

{

case 1:

printf("请输入你要修改的商品的名称： ");

info_change();

break;

case 2:

printf("请输入你要删除的商品的名称： ");

info_dele();

break;

case 3:

printf("请输入你要查询的商品的名称： ");

info_search();

break;

case 4:

printf("请输入你要插入的商品的信息（以换行符区分信息条目）：\n");

info_insert();

break;

default:

printf("保存数据中，请稍后");

Sleep(1000);

printf(".");

Sleep(1000);

printf(".");

Sleep(1000);

printf(".");

Sleep(1000);

info_flush();

printf("数据保存成功！已退出系统。\n");

return 0;

}

}

}