adres defteri

#include
#include
#include
#include
int a;
//----------------------------------------------------------------------------
void rehber_oku(void);
void kayit_yap(void);

int main(void)
{
printf("Ne yapmak istersiniz?\nRehberi okumak icin 1 girin.\nKayit yapmak icin 2 girin.\nProgrami kapatmak icin 3 girin:");
scanf("%d", &a);
if(a==1)
{
rehber_oku();
}
if(a==3)
{
exit(0);
}
if(a==2)
{
kayit_yap();
}
return 0;
}

void rehber_oku(void)
{
char ch;
FILE *d;
d=fopen("C:\\adres.htm","r");
ch=getc(d);

while (ch!=EOF){
putchar(ch);
ch=getc(d);
}

printf("\nKayit yapmak icin 2'i girin:");
scanf("%d", &a);
}

void kayit_yap(void)
{
struct kisi{
int TelNo;
char isim[25];
}kayit[100];
char buf[255];
int i;
FILE *adres;
adres=fopen("C:\\adres.txt","a");
for(i=0;i<5;i++)
{
printf("Kayit icin telefon numarasini gir:",i+1);
scanf("%d",&kayit[i].TelNo);
gets(buf);
fprintf(adres,"Telefon numarasi: %d\n",kayit[i].TelNo);
printf("Kayit icin isim gir:",i+1);
gets(kayit[i].isim);
fprintf(adres,"Adi ve Soyadi: %s\n",kayit[i].isim);
fprintf(adres,"**************************\n");
}
}