學(xué)生成績管理系統(tǒng)c語言代碼(供參考)

/16else(p=p->next;q=q->next;)))break;case1:for(i=0;i<=m;i++)//按學(xué)號排序(p=head;q=head->next;while(q->next)(if((q->date.number)>(q->next->date.number)){p->next=q->next;p=p->next;q->next=p->next;p->next=q;)else{p=p->next;q=q->next;

}}break;}printf("=>排序成功！\n");return1;}voidmenu(){printf("\n*********************************主菜單printf("\n*********************************主菜單***************************************\n");printf("\t\t\t1.新建系統(tǒng)\t2.添加學(xué)生\n\t\t\t3.刪除學(xué)生\t4.查看信息\n\t\t\t5.排列順序\t6.讀取信息\n\t\t\t7.保存信息\t8.退出系統(tǒng)\n");printf("=>請選擇你的操作！\n");}intsave(unit*head)//保存{FILE*fp;unit*p;p=head;學(xué)生","wb+"))==NULL){printf("=>保存失敗！");return0;}while(p){fwrite(&(p->date),sizeof(student),1,fp);p=p->next;}printf("=>保存成功！");fclose(fp);return1;}unit*read()//讀入系統(tǒng)學(xué)生信息{inti;unit*p,*q,*head;FILE*fp;if((head=(unit*)malloc(sizeof(unit)))==NULL){printf("=>開辟空間失??！");exit(1);}else{head->next=NULL;head->date.number=0;//頭結(jié)點(diǎn)存放學(xué)生人數(shù)}q=head;學(xué)生","rb"))==NULL){printf("=>系統(tǒng)無學(xué)生！\n");return0;}fread(&(q->date),sizeof(student),1,fp);for(i=0;i<head->date.number;i++){if((p=(unit*)malloc(sizeof(unit)))==NULL){printf("=>讀值失??！");exit(1);}fread(&(p->date),sizeof(student),1,fp);p->next=q->next;q->next=p;}

fclose(fp);returnhead;}voidmain(){intm=0,n,i;unit*head;printf(”***********************************************************printf(*********************\n\n");printf（"\t\t\t*歡迎使用學(xué)生成績管理系統(tǒng) *\n"）;printf("\n\t\t\t\t\t\t\t\t編譯員：吹吹風(fēng)\n\n");printf（"=>正在讀取系統(tǒng)信息 \n"）;if((head=read())==0){printf("=>是否新建？\n");printf("\t\t\t是(1)\t\t否(2)\n");scanf("%d",&i);fflush(stdin);if(i==1)head=build();elseif(i==2)exit(1);

}elseprintf("=>信息導(dǎo)入成功！");while(m==0){menu();scanf("%d",&n);fflush(stdin);switch(n){case1:head=build();break;case2:add(head);break;case3:deletion(head);break;case4:display(head);break;\n");break;case5:range(head);break;\n");b