include<stdio.h>

include<stdlib.h>

include<string.h>

include<ctype.h>

struct Student #自定义结构体 { int number; char name[10]; int phy; int math; int eng; int com; }stu[40];

int choose_carte() #菜单显示 { int c; do{ system("cls"); printf("\t\t请选择该学生成绩统计系统所实现功能\n"); printf("\t\t1.录入：输入学生数据 \n"); printf("\t\t2.显示：显示学生数据 \n"); printf("\t\t3.统计：统计最高分，最低分 \n"); printf("\t\t0.退出 \n"); printf("\t\t**************************************************\n"); printf("\t\t\tGive you Choice(0-3):"); scanf("%d",&c); }while(c<0||c>3); return c; }

int Intput(struct Student stu[],int n) #输入学生信息 { int i=0; char c; do { printf("\t\t\t学号："); scanf("\t\t\t%d",&stu[n+i].number); printf("\t\t\t姓名："); scanf("\t\t\t%s",&stu[n+i].name); printf("\t\t\t物理分数："); scanf("\t\t\t%d",&stu[n+i].phy); printf("\t\t\t数学分数："); scanf("\t\t\t%d",&stu[n+i].math); printf("\t\t\t外语分数："); scanf("\t\t\t%d",&stu[n+i].eng); printf("\t\t\t计算机分数："); scanf("\t\t\t%d",&stu[n+i].com); i++; printf("\t\t\t您还要继续录入成绩吗？\n"); printf("\t\t\t请输入‘y’继续，或'n'停止"); scanf("\t\t\t%c",&c); }while(c=='y'); return (i+n); }

int Output(struct Student stu[],int n) #输出学生信息 { int i; printf("\t\t----------------------------------------------------\n"); printf("\t\t| Number | Name | Phy | Math | Eng | Com | \n"); printf("\t\t----------------------------------------------------\n"); for( i=1;i<n+1;i++) { printf("\t\t%4d%10s%9d%9d%9d%9d\n",stu[i-1].number,stu[i-1].name,stu[i-1].phy,stu[i-1].math,stu[i-1].eng,stu[i-1].com); printf("\t\t----------------------------------------------------\n"); } system("pause");

}

void Data(struct Student stu[],int n) #统计 { int i; int sum=0; int phy_hight=0; int math_hight=0; int eng_hight=0; int com_hight=0; int phy_low=0; int math_low=0; int eng_low=0; int com_low=0; for(i=0;i<n;i++) { if(stu[phy_hight].phy<stu[i].phy) phy_hight=i; if(stu[phy_low].phy>stu[i].phy) phy_low=i; if(stu[i].phy<60) printf("\t\t物理不及格的%4d%10s%9d\n",stu[i].number,stu[i].name,stu[i].phy);

if(stu[math_hight].math<stu[i].math)
        math_hight=i;
    if(stu[math_low].math>stu[i].math)
        math_low=i;
       if(stu[i].math<60)
        printf("\t\t数学不及格的%4d%10s%9d\n",stu[i].number,stu[i].name,stu[i].math);

    if(stu[eng_hight].eng<stu[i].eng)
        eng_hight=i;
    if(stu[eng_low].eng>stu[i].eng)
        eng_low=i;
        if(stu[i].eng<60)
        printf("\t\t英语不及格的%4d%10s%9d\n",stu[i].number,stu[i].name,stu[i].eng);

    if(stu[com_hight].com<stu[i].com)
        com_hight=i;
    if(stu[com_low].com>stu[i].com)
        com_low=i;
        if(stu[i].phy<60)
       printf("\t\t计算机不及格的%4d%10s%9d\n",stu[i].number,stu[i].name,stu[i].com);
        ++sum;
    }
printf("\t\t该数据中不及格的人数为%d\n",sum);
system("pause");
printf("\t\t物理最高分为:\n");
printf("\t\t%4d%10s%9d\n",stu[phy_hight].number,stu[phy_hight].name,stu[phy_hight].phy);
printf("\t\t数学最高分为:\n");
printf("\t\t%4d%10s%9d\n",stu[math_hight].number,stu[math_hight].name,stu[math_hight].math);
printf("\t\t外语最高分为:\n");
printf("\t\t%4d%10s%9d\n",stu[eng_hight].number,stu[eng_hight].name,stu[eng_hight].eng);
printf("\t\t计算机最高分为:\n");
printf("\t\t%4d%10s%9d",stu[com_hight].number,stu[com_hight].name,stu[com_hight].com);
printf("\n\n\n");

printf("\t\t物理最低分为:\n");
printf("\t\t%4d%10s%9d\n",stu[phy_low].number,stu[phy_low].name,stu[phy_low].phy);
printf("\t\t数学最低分低为:\n");
printf("\t\t%4d%10s%9d\n",stu[math_low].number,stu[math_low].name,stu[math_low].math);
printf("\t\t外语最低分为:\n");
printf("\t\t%4d%10s%9d\n",stu[eng_low].number,stu[eng_low].name,stu[eng_low].eng);
printf("\t\t计算机最低分为:\n");
printf("\t\t%4d%10s%9d\n",stu[com_low].number,stu[com_low].name,stu[com_low].com);
system("pause");

}

void main() { int n=0; do{ switch(choose_carte()) { case 0: break; case 1: printf("\t\t\t请输入学生的个人信息\n"); n=Intput(stu,n); break; case 2: printf("\t\t\t输出所有学生的个人信息\n"); Output(stu,n); break; case 3: Data(stu,n); break; }

}while(choose_carte()!=0); }