• 仓库库存管理系统(C+MySQL+ODBC)


    SQL:

    create database ckkc;
    create
    table users ( name char(35) not null primary key, psw char(50) not null ) create table op ( id int not null primary key auto_increment, flag int not null, pname char(15) not null, num int not null ) create table st ( pname char(15) not null primary key, num int not null ) insert into users values('root','rootpass');

    main.c

    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #include <windows.h>
    #include <sql.h>
    #include <sqlext.h>
    #include <Sqltypes.h>
    
    #define MAXBUFLEN 255
    #define Clr() system("cls")
    #define Pau() system("pause")
    
    char Str_1[MAXBUFLEN];
    char Name[MAXBUFLEN];
    SQLHENV henv;
    SQLHDBC hdbc;
    SQLHSTMT hstmt;
    SQLRETURN ret;
    SQLCHAR ConnectIn[MAXBUFLEN]="DRIVER={MySQL ODBC 5.1 Driver};SERVER=127.0.0.1;UID=root;PWD=rootpass;DATABASE=ckkc;CharSet=gbk;";
    SQLCHAR ConnectOut[MAXBUFLEN];
    SQLCHAR sql[MAXBUFLEN];
    SQLCHAR    Rs[MAXBUFLEN];
    SQLINTEGER cbRS=SQL_NTS;
    
    void Menu()
    {
        printf("\n\n\n");
        printf("\t----------------------------------------\n");
        printf("\t\t欢迎登入仓库库存管理系统\n");
        printf("\t----------------------------------------\n");
        printf("请输入用户名:");
        scanf("%s",Name);
        printf("请输入密码:");
        scanf("%s",Str_1);
        return;
    }
    
    void Add()
    {
        int num;
        printf("请输入入库物品名称:");
        scanf("%s",Str_1);
        printf("请输入入库数量:");
        scanf("%d",&num);
        ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
        wsprintf((LPSTR)sql,"INSERT INTO op(flag,pname,num) VALUES('0','%s','%d')",Str_1,num);
        ret=SQLPrepare(hstmt,sql,SQL_NTS);
        ret=SQLExecute(hstmt);
        if(!SQL_SUCCEEDED(ret))
        {
            printf("2.操作数据库失败!\n");
            return ;
        }
        Rs[0]='\0';
        ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
        wsprintf((LPSTR)sql,"SELECT * FROM st WHERE pname='%s'",Str_1);
        ret=SQLPrepare(hstmt,sql,SQL_NTS);
        ret=SQLExecute(hstmt);
        if(SQLFetch(hstmt)!=SQL_NO_DATA_FOUND)
        {
            SQLGetData(hstmt,1,SQL_C_CHAR,Rs,MAXBUFLEN,&cbRS);
        }
        if(Rs[0]=='\0')
        {
            ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
            wsprintf((LPSTR)sql,"INSERT INTO st VALUES('%s','%d')",Str_1,num);
            ret=SQLPrepare(hstmt,sql,SQL_NTS);
            ret=SQLExecute(hstmt);
            if(!SQL_SUCCEEDED(ret))
            {
                printf("3.操作数据库失败!\n");
                return ;
            }
        }
        else
        {
            ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
            wsprintf((LPSTR)sql,"UPDATE st SET num=num+%d WHERE pname='%s'",num,Str_1);
            ret=SQLPrepare(hstmt,sql,SQL_NTS);
            ret=SQLExecute(hstmt);
            if(!SQL_SUCCEEDED(ret))
            {
                printf("4.操作数据库失败!\n");
                return ;
            }
        }
        return;
    }
    
    void Mus()
    {
        int num,now;
        printf("请输入出库物品名称:");
        scanf("%s",Str_1);
        printf("请输入出库数量:");
        scanf("%d",&num);
        Rs[0]='\0';
        ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
        wsprintf((LPSTR)sql,"SELECT * FROM st WHERE pname='%s'",Str_1);
        ret=SQLPrepare(hstmt,sql,SQL_NTS);
        ret=SQLExecute(hstmt);
        if(SQLFetch(hstmt)!=SQL_NO_DATA_FOUND)
        {
            SQLGetData(hstmt,2,SQL_C_CHAR,Rs,MAXBUFLEN,&cbRS);
        }
        if(Rs[0]=='\0')
        {
            printf("该货物不存在!\n");
            return;
        }
        else
        {
            now=atoi((const char *)Rs);
            if(now>num)
            {
                ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
                wsprintf((LPSTR)sql,"UPDATE st SET num=num-%d WHERE pname='%s'",num,Str_1);
                ret=SQLPrepare(hstmt,sql,SQL_NTS);
                ret=SQLExecute(hstmt);
                if(!SQL_SUCCEEDED(ret))
                {
                    printf("5.操作数据库失败!\n");
                    return ;
                }
                ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
                wsprintf((LPSTR)sql,"INSERT INTO op(flag,pname,num) VALUES('1','%s','%d')",Str_1,num);
                ret=SQLPrepare(hstmt,sql,SQL_NTS);
                ret=SQLExecute(hstmt);
                if(!SQL_SUCCEEDED(ret))
                {
                    printf("6.操作数据库失败!\n");
                    return ;
                }
            }
            else if(now==num)
            {
                ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
                wsprintf((LPSTR)sql,"DELETE FROM st WHERE pname='%s'",Str_1);
                ret=SQLPrepare(hstmt,sql,SQL_NTS);
                ret=SQLExecute(hstmt);
                if(!SQL_SUCCEEDED(ret))
                {
                    printf("7.操作数据库失败!\n");
                    return ;
                }
                ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
                wsprintf((LPSTR)sql,"INSERT INTO op(flag,pname,num) VALUES('1','%s','%d')",Str_1,num);
                ret=SQLPrepare(hstmt,sql,SQL_NTS);
                ret=SQLExecute(hstmt);
                if(!SQL_SUCCEEDED(ret))
                {
                    printf("8.操作数据库失败!\n");
                    return ;
                }
            }
            else
            {
                printf("库存不足!\n");
            }
        }
        return;
    }
    
    void Query()
    {
        SQLINTEGER num;
        SQLINTEGER cbnum;
        printf("货物名称\t数量\n");
        ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
        wsprintf((LPSTR)sql,"SELECT * FROM st",SQL_NTS);
        ret=SQLPrepare(hstmt,sql,SQL_NTS);
        ret=SQLExecute(hstmt);
        if(SQLFetch(hstmt)==SQL_NO_DATA_FOUND)
        {
            printf("记录为空!\n");
        }
        else
        {
            do
            {
                SQLGetData(hstmt,1,SQL_C_CHAR,Rs,MAXBUFLEN,&cbRS);
                SQLGetData(hstmt,2,SQL_C_LONG,&num,0,&cbnum);
                printf("%s\t%ld\n",Rs,num);
            }
            while(SQLFetch(hstmt)!=SQL_NO_DATA_FOUND);
        }
        return;
    }
    
    void Show()
    {
        SQLINTEGER num,flag;
        SQLINTEGER cbnum,cbflag;
        printf("入/出库\t货物名称\t数量\n");
        ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
        wsprintf((LPSTR)sql,"SELECT * FROM op",SQL_NTS);
        ret=SQLPrepare(hstmt,sql,SQL_NTS);
        ret=SQLExecute(hstmt);
        if(SQLFetch(hstmt)==SQL_NO_DATA_FOUND)
        {
            printf("记录为空!\n");
        }
        else
        {
            do
            {
                SQLGetData(hstmt,2,SQL_C_LONG,&flag,0,&cbflag);
                SQLGetData(hstmt,3,SQL_C_CHAR,Rs,MAXBUFLEN,&cbRS);
                SQLGetData(hstmt,4,SQL_C_LONG,&num,0,&cbnum);
                if(flag==0)
                {
                    printf("");
                }
                else
                {
                    printf("");
                }
                printf("\t%s\t%ld\n",Rs,num);
            }
            while(SQLFetch(hstmt)!=SQL_NO_DATA_FOUND);
        }
        return;
    }
    
    int main()
    {
        ret=SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&henv);
        ret=SQLSetEnvAttr(henv,SQL_ATTR_ODBC_VERSION,(void *)SQL_OV_ODBC3,0);
    
        ret=SQLAllocHandle(SQL_HANDLE_DBC,henv,&hdbc);
        ret=SQLDriverConnect(hdbc,NULL,ConnectIn,SQL_NTS,ConnectOut,MAXBUFLEN,(SQLSMALLINT *)0,SQL_DRIVER_NOPROMPT);
        if(!SQL_SUCCEEDED(ret))
        {
            printf("1.操作数据库失败!\n");
            return -1;
        }
        while(1)
        {
            Menu();
            ret=SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
            wsprintf((LPSTR)sql,"SELECT psw FROM users WHERE name ='%s'",Name);
            ret=SQLPrepare(hstmt,sql,SQL_NTS);
            ret=SQLExecute(hstmt);
            if(SQLFetch(hstmt)!=SQL_NO_DATA_FOUND)
            {
                SQLGetData(hstmt,1,SQL_C_CHAR,Rs,MAXBUFLEN,&cbRS);
            }
            if(strcmp((const char *)Rs,Str_1)==0)
            {
                Clr();
                while(1)
                {
                    printf("HI %s,欢迎您!\n",Name);
                    printf("\t1.入库操作\n");
                    printf("\t2.出库操作\n");
                    printf("\t3.库存查询\n");
                    printf("\t4.交易查询\n");
                    printf("\t0.退出系统\n");
                    printf("请选择操作:");
                    char ch;
                    scanf("%*c%c",&ch);
                    switch(ch)
                    {
                    case '1':
                        Add();
                        break;
                    case '2':
                        Mus();
                        break;
                    case '3':
                        Query();
                        break;
                    case '4':
                        Show();
                        break;
                    case '0':
                        return 0;
                    default:
                        printf("输入错误,请输入0~4\n");
                    }
                    Pau();
                    Clr();
                }
            }
            else
            {
                printf("登录失败!\n");
                Pau();
                Clr();
            }
        }
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/NoSoul/p/2687336.html
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