实验六

task.4

#include<stdio.h>
#include<string.h>
#define N 100

typedef struct{
    char num[10];    //学号
    int s1;          //期末成绩
    int s2;          // 平时成绩
    double sum;      //总评
    char level[10];  //等级 
}STU;


int fun(STU a[], int n,STU h[]);

int main(){
    STU s[N] = {{"GA05", 85, 76},
                {"GA03", 76, 90},
                {"GA02", 69, 90},
                {"GA04", 85, 56},
                {"GA01", 91, 95},
                {"GA07", 72, 80},
                {"GA08", 64, 45},
                {"GA06", 87, 98},
                {"GA015", 85, 86},
                {"GA013", 91, 97}};     //原始学生成绩记录
    STU h[N];
    int i, k, n = 10;
    
    //调用fun对学生成绩记录进行处理
    k = fun(s, n, h);
    
    //输出均分以上学生记录
    printf("There are :\n");
    for(i = 0; i < k; i++)
    printf("%s %d %d %.2f %s\n",h[i].num, h[i].s1, h[i].s2, h[i].sum, h[i].level);
    
    return 0;             
} 

int fun(STU a[], int n,STU h[]){
    int i,j;
    int cnt = 0;
    double sum, average;
    for(i = 0; i < n; ++i){
        a[i].sum = 0.3 * a[i].s2 + 0.7 * a[i].s1;
        sum +=a[i].sum; 
        }
    average = sum/n;
    for(i = 0; i < n; ++i){
        if(a[i].sum > average){
            h[j] = a[i];
            strcpy(h[j].level,"均分以上");
            cnt++; 
            j++;
        }
    }
    return cnt;    
}

 

task.5

#include<stdio.h>
#include<string.h>
#define N 5

typedef struct student{
    char name[10];
    int num;
    int maths;
    int computer;
    int english;
    int sum;
    char level[10];
}STU;

void fun(STU a[], int n);

int main(){
    STU s[6*N] = {{"A001", 1, 34, 67, 80},
                  {"B003", 3, 78, 87, 90},
                  {"A002", 2, 90, 98, 99},
                  {"B002", 4, 56, 78, 98},
                  {"A005", 5, 35, 67, 79}};
    int i;
    
    fun(s,N);
    for(i = 0; i < N; i++)
    printf("%s %d %d %d %d %d %s\n", s[i].name, s[i].num, s[i].maths, s[i].computer, s[i].english, s[i].sum, s[i].level);
    
    return 0;              
}

void fun(STU a[], int n){
    int i,min,max;
    for(i = 0; i < N; i++){
        a[i].sum = a[i].maths + a[i].computer + a[i].english;
    }
    min = a[0].sum;
    max = a[0].sum;
    for(i = 0; i < N; i++){
        if(a[i].sum > max)
        max = a[i].sum;
    }
    for(i = 0;i < N; i++){
        if(a[i].sum < min)
        min = a[i].sum;
    }
    for(i = 0; i < N; i++){
        if(a[i].sum == max)
        strcpy(a[i].level,"优秀"); 
        else if(a[i].sum == min)
        strcpy(a[i].level,"不及格");
        else
        strcpy(a[i].level,"合格"); 
    }
}

 

task.6

#include<stdio.h>

#define N 5

//定义结构体类型struct student, 并定义STU为其别名
typedef struct student{
    long no;
    char name[20];
    int score;
}STU;

//函数声明
void input(STU s[], int n);
int find_min_list(STU s[], STU t[], int n);
void output(STU S[], int n);

int main(){
    STU stu[N], min_list[N];
    int count;
    
    printf("录入%d个学生信息\n", N);
    input(stu, N);
    
    printf("\n统计最低分数人数和学生信息。。。\n");
    count = find_min_list(stu, min_list, N);
    
    printf("\n一共有%d个最低分，信息如下：\n",count);
    output(min_list, count);
    
    return 0; 
} 

//输入n个学生信息，存放在结构体数组s中 
void input(STU s[], int n){
    int i;
    for(i = 0; i < n; i++){
        scanf("%ld%s%d",&s[i].no, s[i].name, &s[i].score);
    } 
}

void output(STU s[], int n){
    int i;
    for(i = 0; i < n; i++){
        printf("%ld %s %d\n",s[i].no, s[i].name, s[i].score);
    }
}

int find_min_list(STU s[], STU t[], int n){
    int min,i,j,cnt;
    j = 0;
    cnt = 0;
    min = s[0].score;
    for(i = 0; i < n; i++){
        if(s[i].score < min)
        min = s[i].score;
    }
    for(i = 0; i < n; i++){
        if(s[i].score == min){
        t[j] = s[i];
        j++;
        cnt++;}
    }
    
    return cnt;
}