学生成绩管理系统c语言代码(供参考)

/16else(p=p->next;q=q->next;)))break;case1:for(i=0;i<=m;i++)//按学号排序(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*********************************主菜单printf("\n*********************************主菜单***************************************\n");printf("\t\t\t1.新建系统\t2.添加学生\n\t\t\t3.删除学生\t4.查看信息\n\t\t\t5.排列顺序\t6.读取信息\n\t\t\t7.保存信息\t8.退出系统\n");printf("=>请选择你的操作！\n");}intsave(unit*head)//保存{FILE*fp;unit*p;p=head;学生","wb+"))==NULL){printf("=>保存失败！");return0;}while(p){fwrite(&(p->date),sizeof(student),1,fp);p=p->next;}printf("=>保存成功！");fclose(fp);return1;}unit*read()//读入系统学生信息{inti;unit*p,*q,*head;FILE*fp;if((head=(unit*)malloc(sizeof(unit)))==NULL){printf("=>开辟空间失败！");exit(1);}else{head->next=NULL;head->date.number=0;//头结点存放学生人数}q=head;学生","rb"))==NULL){printf("=>系统无学生！\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("=>读值失败！");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*欢迎使用学生成绩管理系统 *\n"）;printf("\n\t\t\t\t\t\t\t\t编译员：吹吹风\n\n");printf（"=>正在读取系统信息 \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("=>信息导入成功！");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