수다닷컴

질문 제목 : 수정은 되는데 삭제랑 검색이 안되네요 ㅠ질문 내용 :

#include stdio.h
#include stdlib.h
typedef struct {
char name[14];
char phone[14];
char age[14];
} person;
int num;
char *file=person.txt;
void menu(void);
void manage(void);
void join(void);
void output(void);
void change_data(void);
void delete_data(void);
void search_data(void);
void main()
{
menu();
}
void menu(void) // 메뉴
{
while(1)
{
printf(1.회원가입\n);
printf(2.전체출력\n);
printf(3.관리[수정,삭제]\n);
scanf(%d, &num);
switch(num)
{
case 1 : join();
break;
case 2 : output();
break;
case 3 : manage();
break;
}
}
}
void manage(void) //메뉴 2
{
printf(관리 테스트\n);
printf(1. 수정\n);
printf(2. 삭제\n);
printf(3. 검색\n);
scanf(%d, &num);
switch(num)
{
case 1 : change_data();
break;
case 2 :delete_data();
break;
case 3 : search_data();
break;
case 0: printf(종료합니다.\n\n);
exit(0);
}
}
void join(void) //회원가입
{
int i;
file *fp;
person d;
fp=fopen(file, ab);
if(fp==null) {
printf(file open에 오류 발생 !);
exit(1);
}
printf(이름, 휴대번호, 생년을 입력하고 enter\n);
for(i=0;i2;i++)
{
fflush(stdin);
printf(데이터 %d번 입력\n, i+1);
printf(이름: );
gets(d.name);
printf(핸드폰번호: );
gets(d.phone);
printf(나이: );
gets(d.age);
fseek(fp, 0l, seek_end);
fwrite(&d, sizeof(person), 1, fp);
}
fclose(fp);
}
void output(void) //출력
{
int block=0;
file *fp;
person d;
fp=fopen(file, rb);
if(fp==null)
{
printf(file open에 오류 발생 !);
exit(1);
}
printf(\n전체 data \n\n);
printf(%-5s %-10s %-15s %-5s\n,block,이름,핸드폰번호,나이);
while(!feof(fp) && (fread(&d, sizeof(person), 1, fp)==1))
{
printf(%3d : %-10s %-15s %5d\n,block, d.name, d.phone, d.age);
block++;
}
fclose(fp);
printf(\ntotal block number = %d\n, block);
}
void search_data(void)
{
long i, total_block, check=0;
char name[12];
file *fp;
person d[10];
fp=fopen(file, rb);
if(fp==null)
{
printf(file open에 오류 발생 !);
exit(1);
}
fseek(fp, 0l, seek_end);
total_block=ftell(fp)/sizeof(person);
fseek(fp, 0l, seek_set);
fread(d, sizeof(person), total_block, fp);
fclose(fp);
printf(파일에서 검색할 이름을 입력하고 enter);
gets(name);
for(i=0;itotal_block;i++)
if (strcmp(name, d[i].name)==0)
{
check=1;
printf(\n%-10s %-15s %5d\n,d[i].name, d[i].phone, d[i].age);
}
if (check==0) printf(일치하는 데이터 없음\n);
}
void delete_data(void)
{
long i, total_block, check=0;
char name[12];
file *fp;
person d[10];
fp=fopen(file, rb);
if(fp==null)
{
printf(file open에 오류 발생 !);
exit(1);
}
fseek(fp, 0l, seek_end);
total_block=ftell(fp)/sizeof(person);
fseek(fp, 0l, seek_set);
fread(d, sizeof(person), erson), total_block, fp);
fclose(fp);
printf(파일에서 삭제할 이름을 입력하고 enter);
gets(name);
for(i=0;itotal_block;i++)
if (strcmp(name, d[i].name)==0)
{
check=1;
d[i]=d[total_block-1];
total_block--;
}
if (check==0) printf(일치하는 데이터 없음\n);
printf(\n삭제 처리후 전체 data\n\n);
printf(%-10s %-15s %-5s\n, 이름, 휴대번호, 생년);
for(i=0;itotal_block;i++)
printf(%-10s %-15s %5d\n,d[i].name, d[i].phone, d[i].age);
fp=fopen(file, wb);
fseek(fp, 0l, seek_set);
fwrite(d, sizeof(person), total_block, fp);
fclose(fp);
}
void change_data(void)
{
int i, block_number, total_block;
file *fp;
person d[10];
fp=fopen(file, rb+);
if(fp==null)
{
printf(file open에 오류 발생 !);
exit(1);
}
fseek(fp, 0l, seek_end);
total_block=ftell(fp)/sizeof(person);
rewind(fp);
fread(d, sizeof(person), total_block, fp);
printf(\n전체 data \n\n);
printf(%-5s %-10s %-15s %-5s\n, block,이름,휴대번호,생년);
for(i=0;itotal_block;i++)
printf(%4d: %-10s %-15s %5d\n,i,d[i].name,d[i].phone,d[i].age);
printf(\n전화번호를 수정하려는 block의 번호를 입력);
scanf(%d, &block_number);
fflush(stdin);
printf(이름 : %s\n, d[block_number].name);
printf(수정할 휴대번호 입력: );
gets(d[block_number].phone);
rewind(fp);
fseek(fp, sizeof(person)*block_number, seek_set);
fwrite(&d[block_number], sizeof(person), 1, fp);
fclose(fp);
}

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