수다닷컴

질문 제목 : 성적프로그램인데 도와주세요..주석 좀 자세히 달아주시면 감사할게요..
그리구 통계 그래프를 넣구 싶은데 어떻게 해야나요..
제가 c언어는 초보라서요 ㅜㅠ
부탁합니다 ..!

질문 내용 :
#include stdio.h
#include stdlib.h
#include string.h

struct _student_ {
int inumber;
char name[30];
int kor;
int math;
int eng;
float avg; /* 평균 */
int irank; /* 석차 */
};
#define max_student_count 10 /* 학생수 */

struct _student_ infostudent[max_student_count];
int irealstudentcount = 0; // 파일에서 읽은 실제 학생수

struct _student_ structmaxdata; // 최고 점수만 기록할 변수char *getgrade(int iscore){
if(iscore =90) return a;
else if(iscore =80) return b;
else if(iscore =70) return c;
else if(iscore =60) return d;
else return f;
}void viewalllist(){
file *fpoutput;
int i;

fpoutput=fopen(output_data.txt, w);

if(fpoutput){
fprintf(fpoutput,\n학생수 : %d명,irealstudentcount);
fprintf(fpoutput,%s,\n================================================);
fprintf(fpoutput,\n%s, 번호 이름 국어 수학 영어 평균 순위 학점\n);
fprintf(fpoutput,%s,================================================);

printf(\n학생수 : %d명,irealstudentcount);
printf(%s,\n================================================);
printf(\n%s, 번호 이름 국어 수학 영어 평균 순위 학점\n);
printf(%s,================================================);

for( i=0;imax_student_count;i++){
if(0 ==strlen(infostudent[i].name)) break;

fprintf(fpoutput,%s,\n);
fprintf(fpoutput,%4d %6s %4d %4d %4d %5.2lf %4d %4s,infostudent[i].inumber,infostudent[i].name,infostudent[i].kor,infostudent[i].math,infostudent[i].eng,infostudent[i].avg,infostudent[i].irank+1,getgrade((int)infostudent[i].avg));
printf(%s,\n);
printf(%4d %6s %4d %4d %4d %5.2lf %4d %4s,infostudent[i].inumber,infostudent[i].name,infostudent[i].kor,infostudent[i].math,infostudent[i].eng,infostudent[i].avg,infostudent[i].irank+1,getgrade((int)infostudent[i].avg));

}

fprintf(fpoutput,%s,\n==============================================);
fprintf(fpoutput,\n최고점 %4d %4d %4d %5.2lf\n,structmaxdata.kor,structmaxdata.math,structmaxdata.eng,structmaxdata.avg);
fprintf(fpoutput,%s,==============================================);

printf(%s,\n==============================================);
printf(\n최고점 %4d %4d %4d %5.2lf\n,structmaxdata.kor,structmaxdata.math,structmaxdata.eng,structmaxdata.avg);
printf(%s,==============================================);

fclose(fpoutput);
}
}

void sortnumber(){
struct _student_ structtempdata;
int i;
int j;
// 번호순으로 정렬
for( i=0;iirealstudentcount;i++){

for( j=0;jirealstudentcount;j++){
if(infostudent[i].inumber infostudent[j].inumber ){
// 데이터 교환
memcpy(&structtempdata,&infostudent[i],sizeof(struct _student_));
memcpy(&infostudent[i],&infostudent[j],sizeof(struct _student_));
memcpy(&infostudent[j],&structtempdata,sizeof(struct _student_));
}
}

}
}

void sortname(){
struct _student_ structtempdata;
int i;
int j;
// 번호순으로 정렬
for( i=0;iirealstudentcount;i++){

for( j=0;jirealstudentcount;j++){
if(strcmp(infostudent[i].name ,infostudent[j].name) 0){
// 데이터 교환
memcpy(&structtempdata,&infostudent[i],sizeof(struct _student_));
memcpy(&infostudent[i],&infostudent[j],sizeof(struct _student_));
memcpy(&infostudent[j],&structtempdata,sizeof(struct _student_));
}
}

}
}

void sortrank(){
struct _student_ structtempdata;
int i;
int j;
// 석차순으로 정렬
for( i=0;iirealstudentcount;i++){

for( j=0;jirealstudentcount;j++){
if(infostudent[i].irank infostudent[j].irank ){
// 데이터 교환
memcpy(&structtempdata,&infostudent[i],sizeof(struct _student_));
memcpy(&infostudent[i],&infostudent[j],sizeof(struct _student_));
memcpy(&infostudent[j],&structtempdata,sizeof(struct _student_));
}
}

}
}

void inputdata(){
int i;
int j;file *fpinput;

char chkor[10]; // 임시로 문자열로 받을 국어 점수
char chmath[10];// 임시로 문자열로 받을 수학 점수
char cheng[10]; // 임시로 문자열로 받을 영어 점수
irealstudentcount = 0;

fpinput=fopen(input_data.txt, rt);
if(fpinput)// 꼭 파일이 열렸는지 확인해야 합니다.
{
i = 0;
while(!feof(fpinput) && imax_student_count) {
fscanf(fpinput, %s %s %s %s,infostudent[i].name,chkor,chmath,cheng);
if(0 == strlen(infostudent[i].name)) break;

infostudent[i].inumber = i+1;
infostudent[i].kor = atoi(chkor);
infostudent[i].math = atol(chmath);
infostudent[i].eng = atol(cheng);
infostudent[i].avg = (float)((infostudent[i].kor +infostudent[i].math+infostudent[i].eng )/3.0);// 최고점수 갱신
if (structmaxdata.kor infostudent[i].kor) structmaxdata.kor = infostudent[i].kor;
if (structmaxdata.math infostudent[i].math) structmaxdata.math = infostudent[i].math;
if (structmaxdata.eng infostudent[i].eng) structmaxdata.eng = infostudent[i].eng;
if (structmaxdata.avg infostudent[i].avg) structmaxdata.avg = infostudent[i].avg;

i++;
irealstudentcount++;
}
fclose(fpinput); // 파일이 열렸을 때만 close 가능

}
// 석차 결정
for( i=0;iirealstudentcount;i++){
infostudent[i].irank = 0;
for( j=0;jirealstudentcount;j++){
if(infostudent[i].avg infostudent[j].avg ){
infostudent[i].irank++;
}
}
}
}

int main(){
int i=0;
int j=0;

int imenu; // 선택된 메뉴

// 최고점수 초기화
structmaxdata.kor = 0;
structmaxdata.math = 0;
structmaxdata.eng = 0;

imenu = 0;
while((-1 != imenu)|| (enu)|| (0 == imenu)){

printf(\n1. 데이터 입력);
printf(\n2. 리스트 보기);
printf(\n3. 번호순으로 정렬);
printf(\n4. 석차순으로 정렬);
printf(\n5. 이름순으로 정렬);
printf(\n메뉴를 선택해 주세요.);
scanf(%d,&imenu);
switch(imenu){
case 1:
printf(\n1 번 메뉴.);
inputdata();
break;

case 2:
printf(\n2 번 메뉴.);
viewalllist();
break;

case 3:
printf(\n3 번 메뉴.);
sortnumber();
viewalllist();
break;

case 4:
printf(\n4 번 메뉴.);
sortrank();
viewalllist();
break;

case 5:
printf(\n5 번 메뉴.);
sortname();
viewalllist();
break;

default:
printf(\ndefault메뉴.);
imenu = (-1);

break;
}}

viewalllist();
printf(\n작업 완료!!!!!\n);
return 0;
} textarea id=re_content style=display：none#include stdio.hbr#include stdlib.hbr#include string.hbrbrstruct _student_ {br int inumber;br char name[30]; br int kor; br int math; br int eng; br float avg; /* 평균 */br int irank; /* 석차 */br};br#define max_student_count 10 /* 학생수 */brbrstruct _student_ infostudent[max_student_count]; brint irealstudentcount = 0; // 파일에서 읽은 실제 학생수brbrstruct _student_ structmaxdata; // 최고 점수만 기록할 변수brbrbrchar *getgrade(int iscore){br if(iscore =90) return "a";br else if(iscore =80) return "b";br else if(iscore =70) return "c";br else if(iscore =60) return "d";br else return "f";br}brbrbrvoid viewalllist(){br file *fpoutput;br int i;brbr fpoutput=fopen("output_data.txt", "w");brbr if(fpoutput){ br fprintf(fpoutput,"\n학생수 : %d명",irealstudentcount); br fprintf(fpoutput,"%s","\n================================================");br fprintf(fpoutput,"\n%s"," 번호 이름 국어 수학 영어 평균 순위 학점\n");br fprintf(fpoutput,"%s","================================================");brbr printf("\n학생수 : %d명",irealstudentcount);br printf("%s","\n================================================");br printf("\n%s"," 번호 이름 국어 수학 영어 평균 순위 학점\n");br printf("%s","================================================");brbr for( i=0;imax_student_count;i++){br if(0 ==strlen(infostudent[i].name)) break;brbr fprintf(fpoutput,"%s","\n");br fprintf(fpoutput,"%4d %6s %4d %4d %4d %5.2lf %4d %4s",infostudent[i].inumber,infostudent[i].name,infostudent[i].kor,infostudent[i].math,infostudent[i].eng,infostudent[i].avg,infostudent[i].irank+1,getgrade((int)infostudent[i].avg));br printf("%s","\n");br printf("%4d %6s %4d %4d %4d %5.2lf %4d %4s",infostudent[i].inumber,infostudent[i].name,infostudent[i].kor,infostudent[i].math,infostudent[i].eng,infostudent[i].avg,infostudent[i].irank+1,getgrade((int)infostudent[i].avg));brbr }brbr fprintf(fpoutput,"%s","\n==============================================");br fprintf(fpoutput,"\n최고점 %4d %4d %4d %5.2lf\n",structmaxdata.kor,structmaxdata.math,structmaxdata.eng,structmaxdata.avg);br fprintf(fpoutput,"%s","==============================================");brbr printf("%s","\n==============================================");br printf("\n최고점 %4d %4d %4d %5.2lf\n",structmaxdata.kor,structmaxdata.math,structmaxdata.eng,structmaxdata.avg);br printf("%s","==============================================");brbr fclose(fpoutput);br } br}brbrvoid sortnumber(){br struct _student_ structtempdata;br int i;br int j;br // 번호순으로 정렬br for( i=0;iirealstudentcount;i++){brbr for( j=0;jirealstudentcount;j++){br if(infostudent[i].inumber infostudent[j].inumber ){br // 데이터 교환br memcpy(&structtempdata,&infostudent[i],sizeof(struct _student_));br memcpy(&infostudent[i],&infostudent[j],sizeof(struct _student_));br memcpy(&infostudent[j],&structtempdata,sizeof(struct _student_));br }br }brbr }br}brbrvoid sortname(){br struct _student_ structtempdata;br int i;br int j;br // 번호순으로 정렬br for( i=0;iirealstudentcount;i++){brbr for( j=0;jirealstudentcount;j++){br if(strcmp(infostudent[i].name ,infostudent[j].name) 0){br // 데이터 교환br memcpy(&structtempdata,&infostudent[i],sizeof(struct _student_));br memcpy(&infostudent[i],&infostudent[j],sizeof(struct _student_));br memcpy(&infostudent[j],&structtempdata,sizeof(struct _student_));br }br }brbr }br}brbrvoid sortrank(){br struct _student_ structtempdata;br int i;br int j;br // 석차순으로 정렬br for( i=0;iirealstudentcount;i++){brbr for( j=0;jirealstudentcount;j++){br if(infostudent[i].irank infostudent[j].irank ){br // 데이터 교환br memcpy(&structtempdata,&infostudent[i],sizeof(struct _student_));br memcpy(&infostudent[i],&infostudent[j],sizeof(struct _student_));br memcpy(&infostudent[j],&structtempdata,sizeof(struct _student_));br }br }brbr }br}brbrvoid inputdata(){br int i;br int j;brbrbr file *fpinput;brbr char chkor[10]; // 임시로 문자열로 받을 국어 점수br char chmath[10];// 임시로 문자열로 받을 수학 점수br char cheng[10]; // 임시로 문자열로 받을 영어 점수br irealstudentcount = 0;brbr fpinput=fopen("input_data.txt", "rt");br if(fpinput)// 꼭 파일이 열렸는지 확인해야 합니다.br {br i = 0;br while(!feof(fpinput) && imax_student_count) {br fscanf(fpinput, "%s %s %s %s",infostudent[i].name,chkor,chmath,cheng);br if(0 == strlen(infostudent[i].name)) break;brbr infostudent[i].inumber = i+1;br infostudent[i].kor = atoi(chkor);br infostudent[i].math = atol(chmath);br infostudent[i].eng = atol(cheng);br infostudent[i].avg = (float)((infostudent[i].kor +infostudent[i].math+infostudent[i].eng )/3.0);brbrbr // 최고점수 갱신br if (structmaxdata.kor infostudent[i].kor) structmaxdata.kor = infostudent[i].kor;br if (structmaxdata.math infostudent[i].math) structmaxdata.math = infostudent[i].math;br if (structmaxdata.eng infostudent[i].eng) structmaxdata.eng = infostudent[i].eng;br if (structmaxdata.avg infostudent[i].avg) structmaxdata.avg = infostudent[i].avg;brbr i++;br irealstudentcount++;br }br fclose(fpinput); // 파일이 열렸을 때만 close 가능brbr } br // 석차 결정br for( i=0;iirealstudentcount;i++){br infostudent[i].irank = 0;br for( j=0;jirealstudentcount;j++){br if(infostudent[i].avg infostudent[j].avg ){br infostudent[i].irank++;br }br }br }br}brbrint main(){br int i=0;br int j=0;brbr int imenu; // 선택된 메뉴brbr // 최고점수 초雌【?초기화br structmaxdata.kor = 0;br structmaxdata.math = 0;br structmaxdata.eng = 0; brbr imenu = 0;br while((-1 != imenu)|| (0 == imenu)){brbr printf("\n1. 데이터 입력");br printf("\n2. 리스트 보기");br printf("\n3. 번호순으로 정렬");br printf("\n4. 석차순으로 정렬");br printf("\n5. 이름순으로 정렬");br printf("\n메뉴를 선택해 주세요.");br scanf("%d",&imenu);br switch(imenu){br case 1: br printf("\n1 번 메뉴.");br inputdata();br break;brbr case 2: br printf("\n2 번 메뉴.");br viewalllist();br break;brbr case 3: br printf("\n3 번 메뉴.");br sortnumber();br viewalllist();br break;brbr case 4: br printf("\n4 번 메뉴.");br sortrank();br viewalllist();br break;brbr case 5: br printf("\n5 번 메뉴.");br sortname();br viewalllist();br break;brbr default:br printf("\ndefault메뉴.");br imenu = (-1);brbr break;br }brbrbr }brbr viewalllist(); br printf("\n작업 완료!!!!!\n");br return 0;br} /textarea
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