Ex6.1

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

#define TRAM_NGHIN 100000
#define CHUC_NGHIN 10000
#define NGHIN 1000
#define TRAM 100
#define MAX 1000000

int main () {
    unsigned int pick, lucky;
    printf("%*s%s%*s\n", 5, "", "CHAO MUNG DEN VOI CHUONG TRINH QUAY XO SO", 5, "");
    printf("Vui long chon xo so: ");
    scanf("%u", &pick);
    putchar('\n');
    srand(time(NULL));
    lucky = rand() % MAX;
    if (pick == lucky) {
        printf("Chuc mung!!!!!! Ban da trung giai dac biet tri gia 3 ty dong!\n");
    } else if ((pick-pick/TRAM_NGHIN*TRAM_NGHIN) == (lucky-lucky/TRAM_NGHIN*TRAM_NGHIN)) {
        printf("Chuc mung!!!!! Ban da trung giai nhat tri gia 200 trieu dong!\n");
    } else if ((pick-pick/CHUC_NGHIN*CHUC_NGHIN) == (lucky-lucky/CHUC_NGHIN*CHUC_NGHIN)) {
        printf("Chuc mung!!!! Ban da trung giai nhi tri gia 100 trieu dong!\n");
    } else if ((pick-pick/NGHIN*NGHIN) == (lucky-lucky/NGHIN*NGHIN)) {
        printf("Chuc mung!!! Ban da trung giai ba tri gia 10 trieu dong!\n");
    } else if ((pick-pick/TRAM*TRAM) == (lucky-lucky/TRAM*TRAM)) {
        printf("Chuc mung!! Ban da trung giai khuyen khich tri gia 500 nghin dong!\n");
    } else {
        printf("Chuc ban may man lan sau!\n");
    }
    printf("\nGiai dac biet trao cho nguoi mang con so: %06d", lucky);
    getch();
    return 0;
}