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#include<stdio.h>
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#include<stdlib.h> //定义杂项函数及内存分配函数 eg:exit()
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#include<string.h> //字符串处理
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#define N 3
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#define M 10
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int add = N - 1;
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int sum[N] = { 0 }, Max[N], Min[N];
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float aver[N] = { 0 };
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struct player //结构体的运用
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{
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int num; //编号
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char name[8]; //名字
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int score[M]; //得分
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};
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void Inistplayer(struct player a[], int n)
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{
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int i;
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for (i = 0; i < n; i++)
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scanf("%d %s", &a[i].num, a[i].name); //录入选手数据
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}
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void Inputscore(int score[], int n) //评委打分
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{
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int i;
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for (i = 0; i < n; i++)
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scanf("%d",&score[i]);
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}
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void sort(struct player a[], float b[], int n) //sort==排序
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{
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int i, k, j,t;
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float temp; //temp:临时文件夹
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//struct player temp1;
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char str[8];
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for (i = 0; i < n-1; i++)
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{
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k = i;
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for (j = i + 1; j < n; j++)
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if (b[k] > b[j])
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k = j;
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if (k != i)
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{
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temp = b[i];
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b[i] = b[k];
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b[k] = temp;
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strcpy(str, a[i].name); //strcpy是复制字符串的的库函数
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strcpy(a[i].name, a[k].name);
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strcpy(a[k].name, str);
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t = a[i].num;
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a[i].num = a[k].num;
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a[k].num = t;
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}
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}
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}
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int main()
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{
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int flag = 1, n, i, m, j; //flag:判断标志
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FILE *fp;
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struct player a[20];
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printf("||===============================================================================||\n");
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printf("||===============================主菜单==========================================||\n");
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printf("||***************************歌手比赛管理系统************************************||\n");
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printf("||===============================================================================||\n");
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printf("|| 1.输入选手数据 ||\n");
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printf("|| 2.评委打分 ||\n");
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printf("|| 3.成绩排序 ||\n");
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printf("|| 4.数据查询 ||\n");
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printf("|| 5.追加学生数据 ||\n");
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printf("|| 6.写入数据文件 ||\n");
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printf("|| 7.退出系统 ||\n");
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printf("||===============================================================================||\n");
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printf("||*******************************************************************************||\n");
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printf("||*******************************************************************************||\n");
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while(flag)
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{
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printf("输入序号以进行的操作：");
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scanf("%d",&n);
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switch(n)
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{
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case 1: //输入选手数据
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Inistplayer(a,N);
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break;
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case 2: //评委打分
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for(i=0;i<N;i++)
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{
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printf("%d位选手的成绩：",i+1);
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Inputscore(a[i].score,M); //输入评委打分
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for(j=0;j<M;j++)
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printf("%d\t",a[i].score[j]); //所有选手的各自得分
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printf("\n");
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}
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break;
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case 3: //成绩排序
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for(i=0;i<N;i++)
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{
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Max[i]=a[i].score[0];
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Min[i]=a[i].score[0];
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for(j=0;j<M;j++)
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{
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sum[i]+=a[i].score[j];
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if(Max[i]<a[i].score[j])
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Max[i]=a[i].score[j];
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if(Min[i]>a[i].score[j])
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Min[i]=a[i].score[j];
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}
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aver[i]=(float)(sum[i]-Max[i]-Min[i])/(M-2); //计算平均值
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}
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sort(a,aver,N);
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for(i=0;i<N;i++)
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printf("%s\t%5.2f\n",a[i].name,aver[i]);
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break;
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case 4: //查询数据
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printf("你想查询的选手的数据：");
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scanf("%d",&m); //m为代选手编号的变量
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for(i=0;i<N;i++)
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if(a[i].num==m)
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{
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printf("%d 号选手%s 总分:%d,最高分%d,最低分%d,平均分%5.2f",a[i].num,a[i].name,sum[i],Max[i],Min[i],aver[i]);
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printf("\n");
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}
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break;
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case 5: //追加选手数据
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printf("请输入要追加的选手数据:\n");
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add=add+1;
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scanf("%d %s",&a[add].num,a[add].name);
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break;
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case 6: //写入数据文件
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printf("将数据写入文件：\n");
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fp=fopen("date.txt","w");
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for(int i=0;i<add+2;i++)
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{
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fprintf(fp,"%d %s\n",a[i].num,a[i].name);
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}
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printf("写入成功！\n");
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fclose(fp);
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break;
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case 7: //退出系统
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exit(0);
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break;
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default:flag=0; //当输入无效数字
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}
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}
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return 0;
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}
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