Banking.c

Banking.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct node_staff {
    char name[50];
    char password[50];
    struct node_staff *next;
};
struct node_staff *
read_staff(struct node_staff *last); //回傳first的位址，這樣在main裡才能用
int main()
{
    int i, j, k;
    struct node_staff *first = NULL;
    first = read_staff(first); //紀錄first的指標位址
    while (1) {                //功能主選單
        printf("\n\n你想做什麼?\n\n");
        printf("1)Load staff account\n  2)Add staff\n  3)Delete staff\n 4)Edit "
               "staffname/password\n");
        printf(
            "5)view stafflist (in orders)\n  6)output staff info to the file\n\n");
        int choice;
        scanf("%d", &choice);
        if (choice == 5) {
            printf("Name\tpassword\n");
            printf("-----------------------------------------------------------------"
                   "---------------\n");
            struct node_staff *p;
            // printf("%p\n", first);
            for (p = first; p != NULL; p = p->next) {
                printf("%s\t", p->name);
                printf("%s\n", p->password);
            }
        }
    }

    return 0;
}
struct node_staff *read_staff(struct node_staff *first)
{
    struct node_staff *previous = NULL;

    FILE *fp;
    fp = fopen("staff.txt", "r");
    while (1) {
        int i, j, k, flag = 1;
        char temp[500], name[50], password[50];
        for (k = 0; k < 2; k++) { //一行有2個資料 跑2次
            if (fscanf(fp, "%s", temp) == EOF) {
                flag = 0;
                break;
            }
            if (temp[0] == 'N') {
                for (i = 0; i < strlen(temp); i++) {
                    if (temp[i] == ':') {
                        for (j = 0; j < strlen(temp) - i - 1; j++) {
                            name[j] = temp[j + i + 1];
                        }
                        name[j] = '\0';
                        break;
                    }
                }
            } else if (temp[0] == 'p') {
                for (i = 0; i < strlen(temp); i++) {
                    if (temp[i] == ':') {
                        for (j = 0; j < strlen(temp) - i - 1; j++) {
                            password[j] = temp[j + i + 1];
                        }
                        password[j] = '\0';
                        break;
                    }
                }
            }
        }
        if (flag == 0) {
            printf("*\n");
            struct node_staff *p;
            for (p = first; p != NULL; p = p->next) {
                printf("%s\t", p->name);
                printf("%s\n", p->password);
            }

            fclose(fp);
            return first;
        }

        // printf("%s %s\n", name, password);
        //你都沒有使用到struct node_staff，所以上面的for迴圈當然GG阿

        if (first == NULL) {
            first = malloc(sizeof(struct node_staff));
            strcpy(first->name, name);
            strcpy(first->password, password);
            first->next = NULL;
            previous = first;
        } else {
            struct node_staff *temp = malloc(sizeof(struct node_staff));
            previous->next = temp;
            strcpy(temp->name, name);
            strcpy(temp->password, password);
            temp->next = NULL;

            previous = temp;
        }
    }
}