c - 如何获取txt中的内容并将其存储在c中的数组中

Question

我是编程小白，所以如果下面的代码写得不好，请不要怪我。我正在做一个关于库存系统的项目。本系统共有修改、搜索等五个功能。我的想法是让用户输入记录号并将存储在txt中的数据返回到数组并显示具有正确ID的记录。这样，用户可以编辑的东西就是特定结构的数组。但我不知道如何将 txt 中的数据获取到数组。它是泊西贝或任何替代解决方案。

声明

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #define true 1
 #define false 0
struct RecordData {

     char RecordNum[10]; 
     char ItemName[ 50 ]; 
     int ItemNum ; 
     char Category[ 50 ];
     int Quantity;
     char Recipient[ 50 ];
     char Destination[ 50 ];
     char Delivery[ 100 ];

}; 
struct RecordData record[MAX];
FILE *fp;

功能添加记录

int addrecord(){

    int x, i = 0;
    char ch, yesno;
    char space = ' ';

    doagain:

        printf("1) Enter Record Number:");
        gets(record[i].RecordNum);

        printf("2) ItemName\nEnter :");
        gets(record[i].ItemName);

        printf("3) ItemNumber\nEnter :");
        scanf("%d%c", &record[i].ItemNum, &ch);

        printf("4) Category\nEnter : ");
        gets(record[i].Category);

        printf("5) Quantity\nEnter : ");
        scanf("%d%c", &record[i].Quantity, &ch);

        printf("7) Recipient\nEnter : ");
        gets(record[i].Recipient);

        printf("8) Final Destination\nEnter : ");
        gets(record[i].Destination);

        printf("9) Delivery status \nEnter : ");
        gets(record[i].Delivery);

        fp = fopen("stock.txt", "a");

        fprintf(fp, "%04d\n", i);

        fprintf(fp, "%s\n%d\n%s\n%d\n%s\n%s\n%s\n%c\n", record[i].ItemName, record[i].ItemNum, 
        record[i].Category, record[i].Quantity, record[i].Recipient, record[i].Destination, record[i].Delivery, space);
        fclose(fp);

    enterys:

        printf("Do you want to add other record? Yes(Y) or No(N)");
        scanf("%s", &yesno);

    switch (yesno){

        case 'Y':
        case 'y':
            i++;
            goto doagain;
            break;
        case 'N':
        case 'n':
            printf("end program\n");
            system("cls");
            return main();
            break;
        default:
            printf("you have enter wrong input");
            goto enterys;

    }

}

主要内容

int main(){

    int num;
    char space, ch;
    mainGUI:
        printf("1. Add New Item<s>:");
        printf("\n2. Display Item Record:");
        printf("\n3. Search Item Information:");
        printf("\n4. Modify Item Record<s>:");
        printf("\nDelete Item Record<s>:");
        printf("\nWhat is your option? <1-5>");
        scanf("%d", &num);
        system("cls");

        switch (num)
        {
            case 0:
                printf("Quit^_^");
                system("cls");
                break;
            case 1:
                printf("You Are Now Adding New Item<s>:\n");
                addrecord();
                break;
            case 2:

                printf("You Are Now Displaying Item<s>:");
                display();
                printf("Press any Button to Go Back Menu");
                scanf("%c%c", &ch, &space);
                if (space == ' '){

                    system("cls");  
                    goto mainGUI;   

                }else{

                    system("cls");
                    goto mainGUI;

                }

                break;
            case 3:
                printf("You Are Now searching items New Item<s>:");
                break;
            case 4:
                printf("You Are Now Adding New Item<s>:");
                break;
            case 5:
                printf("You Are Now Adding New Item<s>:");
                break;
            default:
            printf("Enter Wrong input\n");
            goto mainGUI;
            break;




        }
    return 0;


}

Answer 1

查看下面提到的片段。这应该敲响一些警钟。

fp = fopen("stock.txt", "r");
if (fp == NULL){
  printf("Cannot open file \n");
  return 0;
}

i = 0;
ch[i] = fgetc(fp);
while (ch != EOF){
  i++;
  ch[i] = fgetc(fp);
}
fclose(fp);
return 1;