歌手比赛系统源代码.doc

#includeiostream #includefstream #includestring #includeiomanip using namespace std; #define NULL 0 int n=0; //链表节点数 bool formExist=false; //原有链表是否存在 struct Singer { string name; long num; int sum; int mark[10]; float average; Singer *next; }; //创建链表 Singer *create(); //打印信息 void print(Singer *pt); //插入节点 Singer *insert(Singer *head,Singer *sin); //保存到文件 void save(Singer *head,char filename[]); //菜单 void menu(); //评委打分 void grade(Singer *head,int mark[]); //成绩排序 void rank(Singer *head); //欢迎 void welcome(); //按姓名查询 void inquire(Singer *head,string name); //按编号查询 void inquire(Singer *head,long num); //从文件导入 Singer *import(char filename[],Singer *head); int main() { Singer *head=NULL; Singer newsin; string name; void grade(Singer *); ifstream infile; char filename[20]; long num; char choose; bool quit=false; char c; welcome(); while(true) { menu(); cinchoose; switch(choose) { case 1: if (formExist) { cout您要创建新的链表，原有链表将丢失，是否继续？(Y/N); cinc; if (!(c==y||c==Y)) continue; else { n=0; head=create(); system(pause); break; } }else { head=create(); system(pause); break; } case 2: cout请输入文件名：; cinfilename; head=import(filename,head); system(pause); break; case 3: grade(head); system(pause); break; case 4: cout排序结果为：endl; rank(head); system(pause); break; case 5: print(head); system(pause); break; case 6: cout请输入姓名：endl; cinname; inquire(head,name); system(pause); break; case 7: cout请输入编号：endl; cinnum; inquire(head,num); system(pause); break; case 8: cout请输入新增选手的姓名、编号：endl; cin; cinnewsin.num; head=insert(head,newsin); system(pause); break; case k: cout请输入文件名：; cinfilename; save(head,filename); system(pause); break; case c: system(cls); welcome(); break; case q: quit=true; break; default: cout输入错误!endl; } if (quit)