PROJECT

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<string.h>

#define NO 'N'

#define YES 'Y'

struct hanghoa
{
    char tenhang[30];
    char mshh[10];
    int soluong;
    float dongia;
    float giaban;
    int soluongban;
};

typedef hanghoa mothh;

void nhaphh(mothh &hh)
{
    fflush(stdin);
    printf("nhap ten HH: \n");
    gets(hh.tenhang);
    printf("nhap ma HH: \n");
    gets(hh.mshh);
    printf("nhap so luong HH: \n");
    scanf("%d", &hh.soluong);
    printf("nhap don gia HH: \n");
    scanf("%f", &hh.dongia);
}

void xuathh(mothh hh)
{
    printf("Ten HH: %s\n", hh.tenhang);
    printf("MSHH: %s\n", hh.mshh);
    printf("So luong HH: %d\n", hh.soluong);
    printf("Gia ban HH: %f\n", hh.dongia);
}

struct danhsach
{
    mothh *arr;
    int n;
};

typedef danhsach dshh;

void nhapdshh(dshh &ds)
{
    for (int i = 0; i < ds.n; i++)
    {
        printf("Nhap HH thu %d\n", i + 1);
        fflush(stdin);
        nhaphh(ds.arr[i]);
    }
}

void xuatdshh(dshh ds)
{
    for (int i = 0; i < ds.n; i++)
    {
        printf("HH thu %d \n", i + 1);
        xuathh(ds.arr[i]);
    }
}

void nhapdshhdb(dshh &ds)
{
    for (int i = 0; i < ds.n; i++)
    {
        printf("cho biet MSHH can ban: %s\n", ds.arr[i].mshh);
        do
        {
            printf("cho biet gia ban: ");
            scanf("%f", &ds.arr[i].giaban);
            if (ds.arr[i].giaban < 220000)
            {
                printf("gia ban k nho hon 220000.Xin nhap lai! \n");
            }
        }
        while (ds.arr[i].giaban < 220000);
        do
        {
            printf("cho biet so luong ban: ");
            scanf("%d", &ds.arr[i].soluongban);
            if (ds.arr[i].soluongban > 63)
            {
                printf("so luong ban k lon hon 63.Xin nhap lai!\n");
            }
        }
        while (ds.arr[i].soluongban > 63);
        printf("OK, da xac nhan va cap nhat thong tin!\n");
    }
}







int main()
{
    float loinhuan;
    float tong = 0;
    char c;
    char choose;
    int luachon;
    dshh ds;
    while (69)
    {
        printf("\n\n\t\t--Chuong trinh quan ly kinh doanh--\n");
        printf("\t\t===================================\n\n");
        printf("1. Quan ly mat hang\n");
        printf("2. Quan ly ban hang\n");
        printf("3. Bao cao\n");
        printf("0. Thoat\n");

        printf("Nhap lua chon: ");
        scanf("%d", &luachon);

        if (luachon != 0 && luachon != 1 && luachon != 2 && luachon != 3)
        {
            printf("Lua chon k hop le!");
        }
        else if (luachon == 1)
        {
            printf("\n\n\t\t===================================\n\n");
            while (69)
            {
                printf("\n1. Nhap hang hoa\n");
                printf("2. chinh sua danh muc hang hoa\n");
                printf("3. xem danh muc hang hoa\n");
                printf("0. Tro ve menu chinh\n");

                printf("Nhap lua chon: ");
                scanf("%d", &luachon);

                if (luachon != 0 && luachon != 1 && luachon != 2 && luachon != 3)
                {
                    printf("Lua chon k hop le!");
                }
                else if (luachon == 1)
                {
                    do
                    {
                        printf("\t\t=====Nhap hang hoa=====\n");
                        printf("nhap so loai HH: \n");
                        scanf("%d", &ds.n);
                        ds.arr = (mothh *)calloc(ds.n, sizeof(mothh));
                        nhapdshh(ds);
                        printf("Ban co muon tiep tuc k? (Y/N) : \n");
                        fflush(stdin);
                        scanf("%c", &choose);
                    }
                    while (choose == YES);
                }
                else if (luachon == 2)
                {
                    do
                    {
                        printf("\t\t=====Chinh sua danh muc hang hoa=====\n");
                        for (int i = 0; i < ds.n; i++)
                        {
                            printf("MSHH: %s \n", ds.arr[i].mshh);
                            printf("Ten HH cu: %s \n", ds.arr[i].tenhang);
                            for (;;)
                            {
                                printf("(Co sua k? (Y/N)):");
                                fflush(stdin);
                                scanf("%c", &choose);
                                if (choose == YES)
                                {
                                    printf("Ten moi : \n");
                                    fflush(stdin);
                                    gets(ds.arr[i].tenhang);
                                }
                                else
                                {
                                    break;
                                }
                            }

                            printf("So luong cu: %d \n", ds.arr[i].soluong);
                            for (;;)
                            {
                                printf("(Co sua k? (Y/N)):");
                                fflush(stdin);
                                scanf("%c", &choose);
                                if (choose == YES)
                                {
                                    printf("So luong moi: \n");
                                    fflush(stdin);
                                    scanf("%d", &ds.arr[i].soluong);
                                }
                                else
                                {
                                    break;
                                }
                            }
                            printf("Don gia cu: %.2f\n",ds.arr[i].dongia);
                            for (;;)
                            {
                                printf("(Co sua k? (Y/N)):");
                                fflush(stdin);
                                scanf("%c", &choose);
                                if (choose == YES)
                                {
                                    printf("Don gia moi: \n");
                                    fflush(stdin);
                                    scanf("%f", &ds.arr[i].dongia);
                                }
                                else
                                {
                                    break;
                                }
                            }
                        }
                        printf("Ban co muon tiep tuc k? (Y/N) : \n");
                        fflush(stdin);
                        scanf("%c", &choose);
                    }
                    while (choose == YES);
                }
                else if (luachon == 3)
                {
                    printf("\t\t=====Danh muc hang hoa hien co=====\n");
                    printf("...........................................................................\n");
                    printf("|STT  |Ma Hang         |Ten Hang        |So luong(chiec) |Gia (VND)       |\n");
                    for (int i = 0; i < ds.n; i++)
                    {
                        printf("...........................................................................\n");
                        printf("|%-5d| %-15s| %-15s| %-15d| %-15.2f|\n", i + 1, ds.arr[i].mshh, ds.arr[i].tenhang, ds.arr[i].soluong, ds.arr[i].dongia);
                    }
                    printf("...........................................................................\n");
                }
                else
                {
                    break;
                }
            }
        }
        else if (luachon == 2)
        {
            printf("\n\n\t\t=====Quan ly ban hang=====\n\n");
            while (69)
            {
                printf("1. Ban hang\n");
                printf("2. Xem ket qua\n");
                printf("0. Tro ve\n");

                printf("Nhap lua chon: ");
                scanf("%d", &luachon);

                if (luachon != 0 && luachon != 1 && luachon != 2)
                {
                    printf("Lua chon k hop le!");
                }
                else if (luachon == 1)
                {
                    do
                    {
                        nhapdshhdb(ds);
                        printf("Ban co muon tiep tuc k? (Y/N) : \n");
                        fflush(stdin);
                        scanf("%c", &choose);
                    }
                    while (choose == YES);
                }
                else if (luachon == 2)
                {
                    printf("\n\n\t\t=====cac mat hang da ban=====\n\n");
                    printf("..............................................................................\n");
                    printf("|STT  |Ma Hang         |Ten Hang        |SL ban(chiec)   |Gia ban (VND)   |Con  \n");
                    for (int i = 0; i < ds.n; i++)
                    {
                        printf("..............................................................................\n");
                        printf("|%-5d| %-15s| %-15s| %-15d| %-15.2f|%-5d\n", i + 1, ds.arr[i].mshh, ds.arr[i].tenhang, ds.arr[i].soluongban, ds.arr[i].giaban, ds.arr[i].soluong - ds.arr[i].soluongban);
                    }
                    printf("..............................................................................\n");
                }
                else
                {
                    break;
                }
            }
        }
        else if (luachon == 3)
        {
            printf("\n\n\t\t=====BAO CAO=====\n\n");
            printf("\n\t\t=====Danh muc hang hoa hien co=====\n");
            printf("...........................................................................\n");
            printf("|STT  |Ma Hang         |Ten Hang        |So luong(chiec) |Gia (VND)       |\n");
            for (int i = 0; i < ds.n; i++)
            {
                printf("...........................................................................\n");
                printf("|%-5d| %-15s| %-15s| %-15d| %-15.2f|\n", i + 1, ds.arr[i].mshh, ds.arr[i].tenhang, ds.arr[i].soluong, ds.arr[i].dongia);
            }
            printf("...........................................................................\n");
            printf("Bam phim bat ky de tiep tuc ...");
            scanf("%c", &c);
            printf("\n\n\t\t=====Cac mat hang da ban=====\n");
            printf("..............................................................................\n");
            printf("|STT  |Ma Hang         |Ten Hang        |SL ban(chiec)   |Gia ban (VND)   |Con  \n");
            for (int i = 0; i < ds.n; i++)
            {
                printf("..............................................................................\n");
                printf("|%-5d| %-15s| %-15s| %-15d| %-15.2f|%-5d\n", i + 1, ds.arr[i].mshh, ds.arr[i].tenhang, ds.arr[i].soluongban, ds.arr[i].giaban, ds.arr[i].soluong - ds.arr[i].soluongban);
            }
            printf("..............................................................................\n");

            for(int i = 0; i < ds.n; i++)
            {
                printf("loi nhuan cua HH thu %d: ", i + 1);
                loinhuan = ds.arr[i].soluongban * (ds.arr[i].giaban - ds.arr[i].dongia);
                printf("%.2f", loinhuan);
                tong = tong + loinhuan;
            }
            printf("\nTong Loi Nhuan Thu Duoc La : %.2f", tong);

            for (int i = 0; i < ds.n; i++)
            {
                if (ds.arr[i].soluong - ds.arr[i].soluongban < 10)
                {
                    printf("\n\nCanh bao sap het hang!\n");
                }
                if (ds.arr[i].soluong - ds.arr[i].soluongban > 20)
                {
                    printf("\n\nHang hoa ton nhieu.Yeu cau giam gia ban !!\n");
                }
            }
        }
    }
    free(ds.arr);
    getch;
}