实验6

task 4

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

typedef struct {
char num[10]; 
int s1;
int s2; 
double sum; 
char level[10]; 
} 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} };
STU h[N]; 
int i, k, n = 10;

k = fun(s, n, h);

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

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, max = 0, min = 300;
    
    for(i = 0; i < n; i++){
        a[i].sum = a[i].maths + a[i].computer + a[i].english;
        if(max < a[i].sum)
            max = a[i].sum;
        if(min > a[i].sum)
            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, "不合格");
    else
        strcpy(a[i].level, "合格");
            
}

task6  

#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;
}

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 i, k=0, min = 100;
    
    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[k++] = s[i];
        }
            
    
    return k;

}