สมุดโทรศัพท์ ตอนนี้ในส่วนของโปรแกรมสมุดโทรศัพท์ตอนนี้เรียบร้อนหมดแล้ว ยังเหลือส่วนที่เป็นฟังก์ชั่นลบ ขอช่วยหน่อยคะ

#include<stdio.h>
#include<conio.h>
#include<string.h>

int data(){

FILE *fp;
char Tel[10],name[20],Nname[10],email[20];
fp=fopen("file.txt","r");
if(fp==NULL){
printf("Cannot open file.txt\n"); return 1;
}
printf("Phonebook\n\n\n");
while(!feof(fp)){
fscanf(fp,"%s%s%s%s",&Tel,&name,&Nname,&email);
printf("%s\t%s\t%s\t%s\n",Tel,name,Nname,email);
}
fclose(fp);
getch();
}


int Search(){
bool found=false;
FILE *fp;
char Tel[10],name[20],Nname[10],email[20],tempTel[20];
fp=fopen("file.txt","r");
if(fp==NULL){
printf("Cannot open file.txt\n"); return 1;
}
printf("Phonebook\n\n\n");

printf("input text to sear: ");
scanf("%s",tempTel);
while(!feof(fp)){
fscanf(fp,"%s%s%s%s",&Tel,&name,&Nname,&email);

if(strcmp(Tel,tempTel)==0){
printf("%s\t%s\t%s\t%s\n",Tel,name,Nname,email);
found=true;
}
if(strcmp(name,tempTel)==0){
printf("%s\t%s\t%s\t%s\n",Tel,name,Nname,email);
found=true;
}
if(strcmp(Nname,tempTel)==0){
printf("%s\t%s\t%s\t%s\n",Tel,name,Nname,email);
found=true;
}
if(strcmp(email,tempTel)==0){
printf("%s\t%s\t%s\t%s\n",Tel,name,Nname,email);
found=true;
}

}
fclose(fp);
if(!found) printf("Not found\n");
}

void insert(){

char Tel[15],name[20],Nname[10],email[200];
FILE *fp;

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

while (1){
printf("#### Input Data ####\n");
printf("enter your phonenumber:");

scanf("%s",Tel);

if (strlen(Tel)<= 9) break;

printf("enter your name:");
scanf("%s",name);

printf("enter your nickname:");
scanf("%s",Nname);

printf("enter your email:");
scanf("%s",email);

fprintf(fp,"%s %s %s %s\n",Tel,name,Nname,email);

}
fclose(fp);
}
int delete_data(){

FILE *fp;
int i,n,m,k;
char Tel[20][20],name[20][30],Nname[20][20],email[20][40];

fp=fopen("file.txt","r");
if(fp==NULL){
printf("Cannot open file.txt\n"); return 1;
}
printf("Phonebook\n\n\n");
n=0;
while(!feof(fp)){
n++;
fscanf(fp,"%s%s%s%s",&Tel[n],&name[n],&Nname[n],&email[n]);
// printf("%2d. %s\t%s\t%s\t%s\n",n,Tel[n],name[n],Nname[n],email[n]);
}
fclose(fp);

for(i=1;i<n ;i++){
printf("%2d. %s\t%s\t%s\t%s\n",i,Tel[i],name[i],Nname[i],email[i]);
}

printf(" *****Enter you To Delet***** \n");
scanf("%d",&m);

for(i=1;i<n ;i++){
printf("%2d. %s\t%s\t%s\t%s\n",i,Tel[i],name[i],Nname[i],email[i]);
}
fp=fopen("file.txt","w");
if(fp==NULL){
printf("Cannot open file.txt\n"); return 1;
}
for(i=1;i<n ;i++){
fprintf(fp,"%s\t%s\t%s\t%s\n",Tel[i],name[i],Nname[i],email[i]);
}
fclose(fp);
getch();
}

main()
{
int n;
do{

printf("---------- Menu Phonebook-----------\n");

printf("------1 --> Input Data\n");
printf("------2 --> Show\n");
printf("------3 --> Search\n");
printf("------4 --> Delete\n");
printf("------0 --> Exit\n");
printf(" Please select Menu :: ");
scanf("%d",&n);
switch (n)
{
case 1: insert(); break;
case 2: data(); break;
case 3: Search(); break;
case 4: delete_data(); break;
case 0: return 0;
}
}while(n > 0 && n <= 2);
}