수다닷컴

질문 제목 :
파일입출력 라인삭제소스좀 수정해주십시오

파일입출력 라인삭제

질문 내용 :
#include stdio.h
#include string.h
FILE *fp;
struct record{
char name[15+1];
char writer[15+1];
}rec;
void get_data();
void display_data();
void delete_data();
void main(void)
{
int s;
while(s!=4){
puts(1.저장\n2.표시\n3.삭제\n4.끝);
scanf(%d,&s);
if(s==1)
get_data();
else if(s==2)
display_data();
else if(s==3)
delete_data();
}
}
void get_data()
{
if((fp=fopen(book.txt,a+t))==NULL){
puts(error);
exit(1);
}
puts(제목 : );
scanf(%s,&rec.name);
puts(저자 : );
scanf(%s,&rec.writer);
fseek(fp,0,SEEK_END);
fread(&rec,1,sizeof(rec),fp);
if((fwrite(&rec,1,sizeof(rec),fp))!=sizeof(rec)){
puts(error);
exit(1);
}
fclose(fp);
}
void display_data()
{
if((fp=fopen(book.txt,rt))==NULL){
puts(error);
exit(1);
}
fread(&rec,1,sizeof(rec),fp);
while(!feof(fp)){
fprintf(stdout,%s저 자의 %s\n,rec.writer,rec.name);
fread(&rec,1,sizeof(rec),fp);
}
fclose(fp);
}
void delete_data() //이부분이삭제부분입니다
{
char delete_name[15+1];
if((fp=fopen(book.txt,rwt))==NULL){
puts(error);
exit(1);
}
fread(&rec,1,sizeof(rec),fp);
while(!feof(fp)){
fprintf(stdout,%s저 자의 %s\n,rec.writer,rec.name);
fread(&rec,1,sizeof(rec),fp);
}
fseek(fp,0,SEEK_SET);
puts(지울것);
scanf(%s,&delete_name);
fread(&rec,1,sizeof(rec),fp);
while(1){
fread(&rec,1,sizeof(rec),fp);
if((strcmp(delete_name,rec.name))==0){
fputs(rec.name,fp);
fputs(rec.writer,fp);
if((fwrite(&rec,0,0,fp))!=0){
puts(error);
exit(1);
}
}
else{
if((fwrite(&rec,1,sizeof(rec),fp))!=sizeof(rec)){
puts(error);
exit(1);
}
}
if(!feof(fp))
break;
}
fclose(fp);
}

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