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实验5

时间：2022-12-21 09:57:11浏览次数：26  
标签：int void ++ STU 实验 printf sum

1. 实验任务1 

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define N 3
typedef struct student{
    int id;
    char name[20];
    char subject[20];
    double perf;//平时
    double mid;
    double final;
    double total;
    char level[10];
}STU;
void input(STU s[], int n);
void output(STU s[], int n);
void calculate(STU s[], int n);
int fail(STU[], STU[], int n);
void sort(STU s[],int n);
int main()
{
    STU st[N], fst[N];
    int k;

    printf("录入学生成绩\n");
    input(st, N);
    printf("\n学生成绩处理\n");
    calculate(st, N);
    k = fail(st, fst, N);
    sort(st, N);
    printf("\n学生成绩排名：\n");
    output(st, N);
    printf("\n不及格学生信息：\n");
    output(fst, k);
    return 0;
}
void input(STU s[], int n) {
    int i;
    for (i = 0; i < n; i++) {
        scanf_s("%d %s %s %lf %lf %lf", &s[i].id, s[i].name,20,
            s[i].subject,20, &s[i].perf, &s[i].mid, &s[i].final);
    }
    return;
}
void output(STU s[], int n) {
    int i;
    printf("-------------------\n");
    printf("学号   姓名   科目  平时  期中  期末  总评  等级\n");
    for (i = 0; i < n; i++) {
        printf(" % d %-6s %-4s %-4.0lf %-4.0lf %-4.0lf\n", s[i].id, s[i].name,
            s[i].subject, s[i].perf, s[i].mid, s[i].final);
    }
    return;
}
void calculate(STU s[], int n) {
    int i;
    for (i = 0; i < n; i++) {
        s[i].total = s[i].perf * 0.2 + s[i].mid * 0.2 + s[i].final * 0.6;
        if (s[i].total >= 90) {
            strcpy(s[i].level, "优");
        }
        else if (s[i].total >= 80&&s[i].total<90) {
            strcpy(s[i].level, "良");
        }
        else if (s[i].total >= 70 && s[i].total < 80) {
            strcpy(s[i].level, "中");
        }
        else if (s[i].total >= 60 && s[i].total < 70) {
            strcpy(s[i].level, "及格");
        }
        else {
            strcpy(s[i].level, "不及格");
        }
    }
}
int fail(STU s[], STU t[], int n) {
    int i, k = 0;
    for (i = 0; i < n; i++) {
        if (s[i].total < 60) {
            t[k++] = s[i];
        }
    }
    return k;
}
void sort(STU s[], int n) {
    int i, j;
    STU t;
    for (i = 0; i < n-1; i++) {
        for (j = 0; j < n - i-1; j++) {
            if (s[j].total < s[j + 1].total) {
                t = s[j];
                s[j] = s[j + 1];
                s[j + 1] = t;
            }
        }
    }
}

2. 实验任务2 
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define N 10
#define M 80
typedef struct stdent {
    char name[M];
    char author[M];
}BOOK;
int main()
{
    BOOK x[N] = { {"《一九八四》", "乔治.奥威尔"},
{"《美丽新世界》", "赫胥黎"},
{"《昨日的世界》", "斯蒂芬.茨威格"},
{"《万历十五年》", "黄仁宇"},
{"《一只特立独行的猪》", "王小波"},
{"《百年孤独》", "马尔克斯"},
{"《情人》", "玛格丽特.杜拉斯"},
{"《只是孩子》", "帕蒂.史密斯"},
{"《刀锋》", "毛姆"},
{"《沉默的大多数》", "王小波"} };
    BOOK* ptr = x;
    char author[20];
    for (ptr = x; ptr < x + N; ptr++) {
        printf("%-30s %-30s\n", ptr->name, ptr->author);
    }
    printf("输入作者名字\n");
    gets_s(author,20);
    printf("其著作为：\n");
    for (ptr = x; ptr < ptr + N; ptr++) {
        if (strcmp(author, ptr->author) == 0) {
            printf("%-30s %-30s\n", ptr->name,ptr->author);
        }
    }
    return 0;
}

3. 实验任务3 
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define N 100
typedef struct student {
    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,count=0;
    double avg=0;
    for (i = 0; i < n; i++) {
        a[i].sum = a[i].s1 * 0.7 + a[i].s2 * 0.3;
        avg += a[i].sum;
    }
    avg /= n;
    for (i = 0; i < n; i++) {
        if (a[i].sum > avg) {
            strcpy_s(a[i].level, 10, "均分以上");
            h[count++] = a[i];
        }
    }
    return count;
}

4. 实验任务4 
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define N 5
typedef struct stdent {
    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 %s\n", s[i].name, s[i].num, s[i].maths,
            s[i].computer, 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_s(a[i].level, 10, "优秀");
        }
        else if (a[i].sum == min) {
            strcpy_s(a[i].level, 10, "不及格");
        }
        else{ strcpy_s(a[i].level, 10, "合格"); }
    }
}

5. 实验任务5 
#include<stdio.h>
#define N 5
typedef struct student {
    long no;
    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);
    output(min_list, count);
    return 0;
}
void input(STU s[], int n){
    int i;
    for (i = 0; i < n; i++) {
        scanf_s("%ld %s %d", &s[i].no, s[i].name, 20,&s[i].score);
    }
    return;
}
int find_min_list(STU s[], STU t[], int n) {
    int i,min=100;
    int count=0;
    for (i = 0; i < n; i++) {
        if (min > s[i].score) {
            min = s[i].score;
        }
    }
    for (i = 0; i < n; i++) {
        if (s[i].score==min) {
            t[count++] = s[i];
        }
    }
    return count;
}
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);
    }
    return;
}

 

标签：int,void,++,STU,实验,printf,sum
From： https://www.cnblogs.com/waterwhy/p/16995580.html

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