Reading and displaying strings from text file

Question

int main() {
    scanf("%d",&a);

    while(1) {
        switch(a) {
        case 0:
            exit(0);
        case 1:
            fp = fopen("info.txt", "r");
            if (fp == NULL)
                printf("File doest not exist! \n");
            else {
                for(i=0; !feof(fp); i++) {
                    fscanf(fp, "%s %s %s %s %s %s",
                           user[i].name,
                           user[i].surname,
                           user[i].gender,
                           user[i].status,
                           user[i].education,
                           user[i].adress);

                    printf("%s, %s, %s, %s, %s, %s\n",
                           user[i].name,
                           user[i].surname,
                           user[i].gender,
                           user[i].status,
                           user[i].education,
                           user[i].adress);
                    fclose(fp);
                }

            }
            break;
        case 2:
            for(i=0; i<N; i++) {

                printf("\nUser application data\n", i+1);
                printf("Name: ");
                gets(user[i].name);
                gets(user[i].name);
                printf("Surname: ");
                gets(user[i].surname);
                printf("Gender: ");
                gets(user[i].gender);
                printf("Status: ");
                gets(user[i].status);
                printf("Education: ");
                gets(user[i].education);
                printf("Adress: ");
                gets(user[i].adress);
                fp = fopen("info.txt", "a");
                fprintf(fp, "\n%s %s %s %s %s %s",
                        user[i].name,
                        user[i].surname,
                        user[i].gender,
                        user[i].status,
                        user[i].education,
                        user[i].adress);
                fclose(fp);
            }
        }
    }
}

Ok, so I'm kinda lost right now. Case 2 where I add strings to text file works flawlessly, but when when I want to check out the added data to the text file using the case 1, program crashes, so far Ive tried several things and no improvements. Would be very thankful for some help!

Your code was a total mess, this time I formatted it for you but for the future: please be kind towards other users and always provide nice, readable code. — Stefano Sanfilippo
– Stefano Sanfilippo, Commented Jan 9, 2014 at 22:07
@StefanoSanfilippo yeah his code was really a total mess. I'm glad you sorted it out half way through deciphering his code. Thanks. — Pavan
– Pavan, Commented Jan 9, 2014 at 22:08
FILE *fp; struct info { int Nr; char name[25], surname[25], gender[15], status[25], education[25], adress[25]; } user[N]; — Marty
– Marty, Commented Jan 9, 2014 at 22:12

qrpnxz · Accepted Answer · 2014-01-09 23:24:59Z

1

In case 1: you are fclose-ing every time you loop which means that after the first loop it will close the file then when it tries to feof and fscanf in the next loop the program will fail.

answered Jan 9, 2014 at 23:24

qrpnxz

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