Bai 4 - BG8 - ver2

// Nhận xét
Bài 4. Chẳng lẽ database chỉ có 8 chuỗi như em quy định hả
// Code
#include<stdio.h>
#include<stdlib.h>
#include<string>
#define MAX 100

void XoaXuongDong(char s[])
{
    int n = strlen(s);

    if (n > 0 && s[n - 1] == '\n')
        s[n - 1] = '\0';
}

char** NhapData(char **data, FILE *f, int *pCount)
{
    int i;

    // tao mang luu data
    data = (char**)malloc(MAX * sizeof(char*));

    for (i = 0; i < MAX; i++)
        data[i] = (char*)malloc(100);

    // luu data
    while(!feof(f))
    {
        fgets(data[*pCount], 100, f);
        XoaXuongDong(data[*pCount]);

        ++(*pCount);
    }

    return data;
}

int Google(char *s, char *s1, char **data, int Count)
{
    int i;
    int dem = 0;
    char *p = NULL;

    for (i = 0; i < Count; i = i + 2)
    {
        strcpy(s1, s);
        p = strtok(s1, " ");

        while (p)
        {
            if (strstr(data[i], p) != NULL)
            {
                printf("%s \n", data[i]);
                printf("%s \n", data[i + 1]);
                printf("\n");

                ++dem;
                break;
            }

            p = strtok(NULL, " ");
        }
    }

    return dem;
}

int main()
{
    // khai bao
    char s[50] = "";
    char s1[50] = "";
    char **data = NULL;
    FILE *f = NULL;
    int Count = 0;
    int i;

    // mo file
    f = fopen("data.txt", "r");

    if (f == NULL)
    {
        printf("Khong mo duoc file data.txt \n");
        return 1;
    }

    // xu li file
    data = NhapData(data, f, &Count);

    // dong file
    fclose(f);

    // nhap tu khoa
    printf("Ban muon tim kiem gi: ");
    gets_s(s);

    // google
    printf("------>  Co %d ket qua tim thay \n", Google(s, s1, data, Count));

    // giai phong bo nho
    for (i = 0; i < MAX; i++)
        free(data[i]);

    free(data);
    data = NULL;

    return 0;
}