实验6

task4.c

#include <stdio.h>
#include <stdlib.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);
system("pause");
return 0;
}

int fun (STU a[], int n, STU h[]) {
    int i,j;
    double sum_=0.0,pj;
    for(i=0;i<n;i++)
        a[i].sum=0.3*a[i].s2+0.7*a[i].s1;
    for(i=0;i<n;i++)
        sum_+=a[i].sum;
    pj=sum_/(n*1.0);
    for(i=0,j=0;i<n;i++)
        if(a[i].sum>pj){
            strcpy(a[i].level,"均分以上");
            h[j++]=a[i];
        }
        return --j;
}

task5.c

#include <stdio.h>
#include <stdio.h>
#include <stdlib.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);
system("pause");
return 0;
}

void fun(STU a[], int n) {
int i,max,min;
for(i=0;i<n;i++)
a[i].sum=a[i].maths+a[i].computer+a[i].english;
for(i=0,max=a[0].sum,min=a[0].sum;i<n-1;i++){
if(a[i+1].sum>max)
max=a[i+1].sum;
if(a[i+1].sum<min)
min=a[i+1].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");
}
}
}

task6.c

char name[20];
int score;
} STU;

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);
system("pause");
return 0;
}

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

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