//functionstu.h
typedef struct subjects
{
int num; //课程编号
char name[20]; //课程名称
char kind[10]; //课程性质
int stime; //总学时
int ttime; //授课学时
int etime; //实验或上机学时
int score; //学分
int term; //开课学期
struct subjects *next;
}SUB;
SUB *create_form()
{
SUB *head,*tail,*p;
int num,stime,ttime;
int etime,score,term;
char name[20],kind[10];
int size=sizeof(SUB);
head=tail=NULL;
printf("输入选修课程信息:(课程编号,名称,性质,总学时,授课学时,实验或上机学时,学分,开课学期)\n");
scanf("%d%s%s%d%d%d%d%d",&num,name,kind,&stime,&ttime,&etime,&score,&term);
while(num!=0){
p=(SUB *)malloc(size);
p->num=num;
strcpy(p->name,name);
strcpy(p->kind,kind);
p->stime=stime;
p->ttime=ttime;
p->etime=etime;
p->score=score;
p->term=term;
if(head==NULL)
head=p;
else
tail->next=p;
tail=p;
scanf("%d%s%s%d%d%d%d%d",&num,name,kind,&stime,&ttime,&etime,&score,&term);
}
tail->next=NULL;
return head;
}
void savefile(SUB *head)
{
SUB *p;
FILE *fp;
if((fp=fopen("e:\\subjects.txt","w"))==NULL){
printf("open fail!\n");
exit(0);
}
fprintf(fp,"课程编号 课程名称 课程性质 总学时 授课学时 实验或上机学时 学分 开课学期\n");
for(p=head;p;p=p->next)
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",p->num,p->name,p->kind,p->stime,p->ttime,p->etime,p->score,p->term);
if(fclose(fp)){
printf("close fail!\n");
exit(0);
}
printf("创建后的信息已放入E盘根目录的“subjects.txt”文件中\n");
}
void savefileadd(SUB *head)
{
SUB *p;
FILE *fp;
if((fp=fopen("e:\\subjectsadd.txt","w"))==NULL){
printf("open fail!\n");
exit(0);
}
fprintf(fp,"课程编号 课程名称 课程性质 总学时 授课学时 实验或上机学时 学分 开课学期\n");
for(p=head;p;p=p->next)
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",p->num,p->name,p->kind,p->stime,p->ttime,p->etime,p->score,p->term);
if(fclose(fp)){
printf("close fail!\n");
exit(0);
}
printf("修改后的信息已放入E盘根目录的“subjectsadd.txt”文件中\n");
}
void savefiledel(SUB *head)
{
SUB *p;
FILE *fp;
if((fp=fopen("e:\\subjectsdel.txt","w"))==NULL){
printf("open fail\n");
exit(0);
}
fprintf(fp,"课程编号 课程名称 课程性质 总学时 授课学时 实验或上机学时 学分 开课学期\n");
for(p=head;p;p=p->next)
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",p->num,p->name,p->kind,p->stime,p->ttime,p->etime,p->score,p->term);
if(fclose(fp)){
printf("close fail!\n");
exit(0);
}
printf("修改后的信息已放入E盘根目录的“subjectsdel.txt”文件中\n");
}
void prin(SUB *head)
{
SUB *ptr;
if(head==NULL){
printf("NO RECORDS!\n");
return;
}
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上机学时 学分 开课学期\n");
for(ptr=head;ptr;ptr=ptr->next)
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
}
void search(SUB *head)
{
int a,num;
int t=1;
char type[10];
char ch='a',ch1;
SUB *ptr;
while(ch!=' '){
printf("若要按课程性质查找请输入1,若要按学分查找请输入2:\n");
scanf("%d",&a);
switch(a){
case 1:printf("请输入要查找的课程的性质:\n");
scanf("%s",type);
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上机学时 学分 开课学期\n");
for(ptr=head;ptr;ptr=ptr->next)
if(strcmp(type,ptr->kind)==0){
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
t=0;
}
if(t) printf("未找到!\n");
t=1;
break;
case 2:printf("输入要查找的课程的学分\n");
scanf("%d",&num);
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上机学时 学分 开课学期\n");
for(ptr=head;ptr;ptr=ptr->next)
if(ptr->score==num){
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
t=0;
}
if(t) printf("未找到!\n");
t=1;
}
printf("继续查找请按回车键,结束请按空格键:\n");
ch1=getchar(); //将回车键赋给CH1,否则CASE里面最后输入的回车键会赋给CH,因此用CH1填补。
ch=getchar();
}
}
SUB *insert(SUB *head)
{
SUB *ptr,*ptr2,*subj;
int size=sizeof(SUB);
char ch='a',ch1;
while(ch!=' '){
subj=(SUB *)malloc(size);
ptr=subj;
printf("输入要插入的课程信息:\n");
scanf("%d%s%s%d%d%d%d%d",&subj->num,subj->name,subj->kind,&subj->stime,&subj->ttime,&subj->etime,&subj->score,&subj->term);
if(head==NULL){
head=ptr;
head->next=NULL;
}
else{
for(ptr2=head;ptr2;ptr2=ptr2->next)
if(ptr2->next==NULL){
ptr2->next=subj;
subj->next=NULL;
break;
}
}
printf("继续插入请按回车,结束请按空格:\n");
ch1=getchar(); //将回车键赋给CH1,否则subj->term输完后输入的回车键会赋给CH,因此用CH1填补。
ch=getchar();
}
return head;
}
SUB *del(SUB *head)
{
SUB *p1,*p2;
char ch='a',ch1;
int num;
while(ch!=' '){
printf("输入想要删除的课程编号:\n");
scanf("%d",&num);
if(head->num==num){
p2=head;
head=head->next;
free(p2);
}
if(head==NULL)
return NULL;
p1=head;
p2=head->next;
while(p2){
if(p2->num==num){
p1->next=p2->next;
free(p2);
}
else p1=p2;
p2=p1->next;
}
printf("继续删除请按回车,结束请按空格:\n");
ch1=getchar(); //将回车键赋给CH1,否则num输完后再输入的回车键会赋给CH,因此用CH1填补。
ch=getchar();
}
return head;
}
void choose(SUB *head)
{
SUB *p,*q;
int a[5];
int num,total=0,i=0,j;
printf("输入要选修的课程的编号,编号之间以空格分开,输完后以0结束\n");
scanf("%d",&num);
while(num!=0){
for(p=head;p;p=p->next)
if(p->num==num){
total=total+p->score;
a[i]=num;
i++;
}
scanf("%d",&num);
}
if(total<60) printf("选修总学分未达到60,选修失败!\n");
else {
printf("选修成功!\n");
printf("您选修的课程为:\n");
for(j=0;j<i;j++)
for(q=head;q;q=q->next)
if(q->num==a[j])
printf("%s ",q->name);
printf("\n");
}
}
void readfile() //将文件重新读出
{
int num,stime,ttime,etime;
int score,term;
char c,name[20],kind[10];
FILE *fp=fopen("e:\\subjects.txt","r");
while(!feof(fp))
{
if((c=fgetc(fp))=='\n')
break;
}
printf("课程编号 课程名称 课程性质 总学时 授课学时 实验或上机学时 学分 开课学期\n");
while(!feof(fp))
{
fscanf(fp,"%d%s%s%d%d%d%d%d\n",&num,name,kind,&stime,&ttime,&etime,&score,&term);
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",num,name,kind,stime,ttime,etime,score,term);
}
fclose(fp);
}