Student record program

Hello guys, i posted this already yesterday, and i kinda worked it out already..however..

Code:

---

void add_record(record x, FILE *fp)
{
    char ans;
    int tempid, count;
    do
    {
        system("cls");
INPUT:
        printf("Student ID: "); scanf("%d", &tempid);
                count=id_check(tempid,x);
                if(count==1)
                {
                        printf("\nStudent number already exists. Try again\n");
                        getch();
                        system("cls");
                        goto INPUT;
                }
                else
                        x.idno=tempid;
        fflush(stdin);
        printf("First Name: "); gets(x.Fname);
        printf("Last Name; "); gets(x.Lname);
        strupr(x.Lname);
        printf("Course: "); gets(x.course);
        printf("Age: "); scanf("%d", &x.age);
        fflush(stdin);
        printf("Tuition: "); scanf("%f", &x.tuition);
        system("cls");
        printf("Enter another record? Y/N");
        ans=toupper(getch());
        system("cls");
        fwrite(&x,sizeof(x),1,fp);
    }while(ans=='Y');
    fclose(fp);
}

int id_check(int tempid, record x)
{       
        int count=0,a=0;
        FILE *fp;

        record temp[100];

        fp=fopen("students_record.txt","r");

        while(!feof(fp))
    {
        fread(&temp[a],sizeof(record),1,fp);
        a++;
    }

        a-=1;

        for(int i=0;i<a;i++)
        {
                if(tempid==temp[i].idno)
                        count++;
        }

        if(count>0)
                return 1;
        else
                return 0;
}

---

If i input a number that already exists, i got it to work already that it asks for another number, however though, if i input a new number, then after inputting all the info, i input another record using the same number, it doesn't display anymore that the number already exists.

example:

Enter number: 1
First Name:
.
.
.
.

Input another record? Y/N
Y

Enter number: 1 <----i used the same number but the program continues
First Name:

You can't open the file in id_check if you already have it open in add_record.


Quzah.