수다닷컴

#includestdio.h
#includestring.h
typedef struct_grade{
char name[10];
int number;
int grade;
}grade
grade data[3];
int doreadaction(void);
int dowriteaction(void);
void inputuserdata(void);
void outputuserdata(void);
int main(int argc, char *argv[])
if(argc2){
printf(다음형식으로 입력하세요\n);
printf(option/r : 읽기\n);
printf(option/w : 쓰기\n);
return -1;
}
if(!strcmp(argv[1],/r))
doreadaction();
else if(!strcmp(argv[1],w))
dowriteaction();
else{
printf(OPTION ERROR\n);
printf(확인\n);
return -1;
}
return 0;
}
int doredaction(void)
{
FILE *fin;
if((fin=fopen(grade.dat,rb)==NULL{
printf(FILEOPEN ERROR\n);
return -1;
}
if(fread(Data, Sizeof(grade),3,fin)!=3){
printf(READING ERROR\n);
return -1;
}
inputuserdata();
if(fwrite(Data,Sizeof(Grade),3,fout)!=3){
printf(WRITE ERROR\n);
fclose(fin);
return -1;
}
outputuserdata();
return 0;
}
int dowriteaction(void)
FILE *fout;
if((fout=fopengrade.dat,wb))==NULL){
printf(FILECREATE ERROR\n);
return -1;
}
inputuserdata();
if(Write(Data,Sizeof(grade),3,fout)!=3){
printf(SAVE 오류\n);
fclose(fout);
return -1;
}
fclose(fout);
return 0;
}
void inputuserdata(void)
{
int i;
printf(학번 학생이름 학점 입력하세요.\n);
for(i=0;i3;i++){
pritnf([학번]:);
scanf(%d,&datail[i],number);
pritnf([이름]:);
scanf(%s,&datail[i],name);
pritnf([학점]:);
scanf(%d,&datail[i],grade);
printf(-------------------------------------\n);
}}
void outputuserdata(void)
{
int i;
printf(학번 학생이름 학점 \n);
for(i=0;i3;i++){
pritnf([학번]:\n,datail[i],number);
pritnf([이름]:\n,datail[i],name);
pritnf([학점]:\n,datail[i],grade);
printf(-------------------------------------\n);
}}

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