parent
7ada371edf
commit
1ba1070179
@ -0,0 +1,332 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#define len sizeof(struct grade)
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struct grade
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{
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char id[10];
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char clas[10];
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char name[20];
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float score1;
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float score2;
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float score3;
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float score;
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struct grade *next;
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struct grade *prev;
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};
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void print()
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{
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int i;
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for(i=1;i<=30;i++)
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{
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printf(" ");
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}
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};
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void menu(struct grade *head,struct grade *tail)
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{
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void student1(struct grade *head);
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void delet(struct grade *head,struct grade *tail);
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void printgrade(struct grade *head,struct grade *tail);
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void selecty(struct grade *head,struct grade *tail);
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void arra(struct grade *head,struct grade *tail);
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char c;
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print();
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printf("1.input\n");
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print();
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printf("2.delete\n");
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print();
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printf("3.select\n");
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print();
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printf("4.order\n");
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print();
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printf("5.output\n");
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print();
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printf("6.quit\n");
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printf("please input your option\n");
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scanf("%s",&c);
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switch(c)
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{
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case'1':student1(head);break;
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case'2':delet(head,tail);break;
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case'3':selecty(head,tail);break;
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case'4':arra(head,tail);break;
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case'5':printgrade(head,tail);break;
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case'6':break;
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default:printf("Wrong input");
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return;
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}
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}
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void printgrade1(struct grade *p)
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{
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printf("%s,",p->id);
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printf("%s,",p->clas);
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printf("%s,",p->name);
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printf("%4.1f,",p->score1);
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printf("%4.1f,",p->score2);
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printf("%4.1f,",p->score3);
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printf("%5.1f",p->score);
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printf("\n");
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}
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void printgrade(struct grade *head,struct grade *tail)
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{
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if(head==NULL)
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{
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printf("error!\n");
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menu(head,tail);
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return;
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}
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else
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{
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struct grade *p=head;
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while(p->next!=NULL)
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{
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printgrade1(p);
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p=p->next;
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}
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printgrade1(tail);
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printf("\n");
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menu(head,tail);
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return;
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}
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}
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void judge(struct grade *head,struct grade *tail,struct grade *next,struct grade *prev,struct grade *pres)
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{
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bool judgechar(char str1[],char str2[]);
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void student2(struct grade *head,struct grade *tail,struct grade *next,struct grade *prev,struct grade *pres);
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char s[3],s1[10]="yes";
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printf("countinue?\n");
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scanf("%s",s);
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if(judgechar(s,s1))
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{student2(head,tail,next,prev,pres);
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return;}
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else
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{menu(head,tail);
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return;}
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}
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void fill(struct grade *p)
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{
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printf("id: ");
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scanf("%s",(*p).id);
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printf("class: ");
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scanf("%s",(*p).clas);
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printf("name: ");
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scanf("%s",(*p).name);
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printf("score1: ");
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scanf("%f",&(*p).score1);
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printf("score2: ");
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scanf("%f",&(*p).score2);
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printf("score3: ");
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scanf("%f",&(*p).score3);
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p->score=p->score1+p->score2+p->score3;
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}
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void student1(struct grade *head)
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{
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void student2(struct grade *head,struct grade *tail,struct grade *next,struct grade *prev,struct grade *pres);
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struct grade *p,*tail;
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p=(struct grade *)malloc(len);
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fill(p);
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p->next=NULL;
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p->prev=NULL;
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head=p;
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tail=p;
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judge(head,tail,(*p).next,(*p).prev,p);
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return;
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}
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void student2(struct grade *head,struct grade *tail,struct grade *next,struct grade *prev,struct grade *pres)
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{
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struct grade *p,*q=pres;
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p=(struct grade *)malloc(len);
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fill(p);
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q->next=p;
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p->next=NULL;
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p->prev=q;
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tail=p;
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judge(head,tail,next,prev,p);
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return;
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}
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bool judgechar(char str1[],char str2[])
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{
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int Len=strlen(str2),i,m=1;
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for(i=0;i<=Len-1;i++)
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{
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if(str1[i]!=str2[i])
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{
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m=0;
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break;
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}
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}
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if(m==1)
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return true;
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else
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return false;
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}
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void delet(struct grade *head,struct grade *tail)
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{
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if(head==NULL||head->next==NULL)
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{
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printf("error!\n");
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menu(head,tail);
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return;
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}
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else
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{
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char str[256],str1[10],str2[10]="yes";
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struct grade *p=head->next;
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printf("The student you want to delete: ");
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scanf("%s",str);
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if(judgechar(head->id,str)||judgechar(head->name,str))
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{
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struct grade *p1;
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p1=head->next;
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free(head);
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head=p1;
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}
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else
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{
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if(judgechar(tail->id,str)||judgechar(tail->name,str))
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{
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struct grade *p1;
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(*(tail->prev)).next=NULL;
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p1=tail->prev;
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free(tail);
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tail=p1;
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}
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else
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{
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while(p->next!=NULL)
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{
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if(judgechar(p->id,str)||judgechar(p->name,str))
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{
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(*(p->prev)).next=p->next;
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(*(p->next)).prev=p->prev;
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free(p);
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break;
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}
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else
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p=p->next;
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}
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}
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}
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printf("Do you want to delete anymore?\n");
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scanf("%s",str1);
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if(judgechar(str1,str2))
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{
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if(head->next==NULL)
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{
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printf("error!\n");
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menu(head,tail);
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return;
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}
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else
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{
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delet(head,tail);
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return;
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}
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}
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else
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{
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printgrade(head,tail);
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return;
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}
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}
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}
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void swap1(char str1[],char str2[])
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{
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char str[100];
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strcpy(str,str2);
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strcpy(str2,str1);
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strcpy(str1,str);
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}
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void swap(struct grade *p,struct grade *q)
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{
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int temp;
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swap1(p->id,q->id);
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swap1(p->name,q->name);
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swap1(p->clas,q->clas);
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temp=q->score1;
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q->score1=p->score1;
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p->score1=temp;
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temp=q->score2;
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q->score2=p->score2;
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p->score2=temp;
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temp=q->score3;
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q->score3=p->score3;
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p->score3=temp;
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temp=q->score;
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q->score=p->score;
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p->score=temp;
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}
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void arra(struct grade *head,struct grade *tail)
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{
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struct grade *p,*q;
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if(head==NULL)
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{
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printf("error!\n");
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menu(head,tail);
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return;
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}
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else
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{
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for(p=head;p->next!=NULL;p=p->next)
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{
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if(p->next==tail)
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{
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if(tail->score>p->score)
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swap(p,tail);
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}
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else
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{
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for(q=p->next;q->next!=NULL;q=q->next)
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{
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if(q->score>p->score)
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swap(p,q);
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}
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if(tail->score>p->score)
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swap(p,tail);
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}
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}
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printgrade(head,tail);
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return;
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}
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}
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void selecty(struct grade *head,struct grade *tail)
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{
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struct grade *p;
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char str[100];
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int m=0;
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if(head==NULL)
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{
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printf("error!\n");
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menu(head,tail);
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return;
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}
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else
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{
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printf("Who do you want to inquire: ");
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scanf("%s",str);
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for(p=head;p->next!=NULL;p=p->next)
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{
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if(judgechar(p->id,str)||judgechar(p->name,str))
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{
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printgrade1(p);
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m++;
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menu(head,tail);
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}
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}
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if(judgechar(tail->id,str)||judgechar(tail->name,str))
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{
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printgrade1(tail);
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m++;
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menu(head,tail);
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}
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if(m==0)
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printf("there is no eligible student\n");
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return;
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}
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}
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int main()
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{ struct grade *head=NULL,*tail;
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menu(head,tail);
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return 0;
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}
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Loading…
Reference in new issue