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实验六

时间:2024-06-05 21:34:36浏览次数:15  
标签:head int void 实验 printf output Film

TASK1

#include <stdio.h>
#include <string.h> 
#define N 3	 

typedef struct student {
	int id; 			
	char name[20]; 		
	char subject[20]; 	
	double perf; 		
	double mid; 		
	double final; 		
	double total; 		
	char level[10]; 	
} STU;

void input(STU [], int);			
void output(STU [], int);		    
void calc(STU [], int);			   
int fail(STU [], STU [], int);	    
void sort(STU [], int);			  

int main() {
	STU st[N], fst[N];   
	int k;  
	
	printf("录入学生成绩信息:\n");
	input(st, N);
	
	printf("\n成绩处理...\n");
	calc(st, N);
	
	k = fail(st, fst, N);
	sort(st, N);
	printf("\n学生成绩排名情况:\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("%d %s %s %lf %lf %lf", &s[i].id, s[i].name, s[i].subject,
                                      &s[i].perf, &s[i].mid, &s[i].final);
}

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   %-4.0f   %-4.0f   %-4.0f   %-4.1f   %s\n",s[i].id,s[i].name,s[i].subject,s[i].perf,s[i].mid,s[i].final,s[i].total,s[i].level);
}


void calc(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, cnt = 0;
      
      for(i = 0; i < n; i++)
      	if(s[i].total < 60)
	    	t[cnt++] = s[i];
	    	
    return cnt;
}

void sort(STU s[], int n) {
	int i, j;
	STU t;
	
	for(i = 0; i < n-1; i++)
	  for(j = 0; j < n-1-i; j++)
	    if(s[j].total < s[j+1].total) {
	    	t = s[j];
	    	s[j] = s[j+1];
	    	s[j+1] = t;
	    }
}


TASK2

#include <stdio.h>
#include <string.h>
#define N 10
#define M 80

typedef struct {
    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"},
	              {"《查令十字街84号》", "海莲.汉芙"},
	              {"《只是孩子》", "帕蒂.史密斯"}, 
				  {"《刀锋》", "毛姆"},
				  {"《沉默的大多数》", "王小波"} };
    Book *ptr;
    int i;
    char author[M];

    printf("所有图书信息: \n");
    for(ptr = x; ptr < x + N; ++ptr)
        printf("%-30s%-30s\n", ptr->name, ptr->author);

    printf("\n输入作者名: ");
    gets(author);
    for(ptr = x; ptr < x + N; ++ptr)
        if(strcmp(ptr->author, author) == 0) {
            printf("%-30s%-30s\n", ptr->name, ptr->author);
        }

    return 0;
}


TASK3.1

#include <stdio.h>
#include <stdlib.h>
#define N 80

typedef struct FilmInfo {
    char name[N];
    char director[N];
    char region[N];
    int year;
    struct FilmInfo *next;
} Film;


void output(Film *head);  
Film *insert(Film *head, int n);   


int main() {
    int n;          
    Film *head;     

    head = NULL;
    printf("输入影片数目: ");
    scanf("%d", &n);

    head = insert(head, n);

    printf("\n所有影片信息如下: \n");
    output(head);

    return 0;
}

Film *insert(Film *head, int n) {
    int i;
    Film *p;

    for(i = 1; i <= n; ++i) {
        p = (Film *)malloc(sizeof(Film));
        printf("请输入第%d部影片信息: ", i);
        scanf("%s %s %s %d", p->name, p->director, p->region, &p->year);
        
        p->next = head;
        head = p;   
    }

    return head;
}

void output(Film *head) {
    Film *p;

    p = head;
    while(p != NULL) {
        printf("%-20s %-20s %-20s %d\n", p->name, p->director, p->region, p->year);
        p = p -> next;
    }
}


TASK3.2

#include <stdio.h>
#include <stdlib.h>
#define N 80

typedef struct FilmInfo {
    char name[N];
    char director[N];
    char region[N];
    int year;
    struct FilmInfo *next;
} Film;


void output(Film *head);   // 遍历输出链表信息
Film *insert(Film *head, int n);   // 向链表中插入n个结点,返回头指针


int main() {
    int n;          // 结点数
    Film *head;     // 头指针变量,存放链表中第一个节点的地址
    Film *p;        // 存放新申请的Film节点内存空间地址

    // 创建头结点
    p = (Film *)malloc(sizeof(Film));
    p->next = NULL;
    head = p;       // 头指针变量存放头节点的地址

    printf("输入影片数目: ");
    scanf("%d", &n);

    // 向链表中插入n部影片信息
    head = insert(head, n);

    // 遍历输出链表中所有影片信息
    printf("\n所有影片信息如下: \n");
    output(head);

    return 0;
}

// 向链表中插入n个结点,从表头插入,返回头指针变量
Film *insert(Film *head, int n) {
    int i;
    Film *p;

    for(i = 1; i <= n; ++i) {
        p = (Film *)malloc(sizeof(Film));
        printf("请输入第%d部影片信息: ", i);
        scanf("%s %s %s %d", p->name, p->director, p->region, &p->year);
        
        // 把结点从表头插入到链表中
        p->next = head->next;
        head->next = p;
    }

    return head;
}

// 遍历输出链表信息
void output(Film *head) {
    Film *p;

    p = head->next;
    while(p != NULL) {
        printf("%-20s %-20s %-20s %d\n", p->name, p->director, p->region, p->year);
        p = p -> next;
    }
}


TASK4

#include <stdio.h>
#define N 10

typedef struct {
    char isbn[20];          // isbn号
    char name[80];          // 书名
    char author[80];        // 作者
    double sales_price;     // 售价
    int  sales_count;       // 销售册数
} Book;

void output(Book x[], int n);
void sort(Book x[], int n);
double sales_amount(Book x[], int n);

int main() {
    Book x[N] = {{"978-7-229-14156-1", "源泉", "安.兰德", 84, 59},
                 {"978-7-5133-5261-1", "李白来到旧金山", "谭夏阳", 48, 16},
                 {"978-7-5617-4347-8", "陌生人日记", "周怡芳", 72.6, 27},
                 {"978-7-5722-5475-8", "芯片简史", "汪波", 74.9, 49},
                 {"978-7-5046-9568-0", "数据化决策", "道格拉斯·W·哈伯德", 49, 42},
                 {"978-7-5133-4388-6", "美好时代的背后", "凯瑟琳.布", 34.5, 39},
                 {"978-7-1155-0509-5", "无穷的开始:世界进步的本源", "戴维·多伊奇", 37.5, 55},
                 {"978-7-5321-5691-7", "何为良好生活", "陈嘉映", 29.5 , 31},
                 {"978-7-5133-5109-6", "你好外星人", "英国未来出版集团", 118, 42},
                 {"978-7-2011-4617-1", "世界尽头的咖啡馆", "约翰·史崔勒基", 22.5, 44}};
    
    printf("图书销量排名: \n");
    sort(x, N);
    output(x, N);

    printf("\n图书销售总额: %.2f\n", sales_amount(x, N));
    
    return 0;
}

// 待补足:函数output()实现
void output(Book x[], int n){
	int i;
	for(i=0;i<n;i++){
		printf("%s %s %s %lf %d\n",x[i].isbn,x[i].name,x[i].author,x[i].sales_price,x[i].sales_count);
	}
}
// 待补足:函数sort()实现
void sort(Book x[], int n){
	int i,j;
	Book t;
	for(i=0;i<n-1;i++){
		for(j=0;j<i-1-n;j++)
		if(x[j].sales_count < x[j+1].sales_count){
			t=x[j];
			x[j]=x[j+1];
			x[j+1]=t;
		}
	}
}
// 待补足:函数sales_count()实现
double sales_amount(Book x[], int n){
	double s,sum=0;
	int i;
	for(i=0;i<n;i++){
		s=x[i].sales_price * x[i].sales_count;
		sum+=s;
	}
	return sum;
}


TASK5

#include <stdio.h>

typedef struct {
    int year;
    int month;
    int day;
} Date;

// 函数声明
void input(Date *pd);                 
int day_of_year(Date d);                
int compare_dates(Date d1, Date d2);    
                                        
                                        
                                       

void test1();                    
void test2();   

int main() {
    printf("测试1: 输入日期, 打印输出这是一年中第多少天\n");
    test1();

    printf("\n测试2: 两个人年龄大小关系\n");
    test2();
}

void test1() {
    Date d;
    int i;

    printf("输入日期:(以形如2024-06-01这样的形式输入)\n");
    for(i = 0; i < 3; ++i) {
        input(&d);
        printf("%04d-%02d-%02d是这一年中第%d天\n\n", d.year, d.month, d.day, day_of_year(d));
    }
}

void test2() {
    Date Alice_birth, Bob_birth;
    int i;
    int ans;

    printf("输入Alice和Bob出生日期:(以形如2005-08-11这样的形式输入)\n");
    for(i = 0; i < 3; ++i) {
        input(&Alice_birth);
        input(&Bob_birth);
        ans = compare_dates(Alice_birth, Bob_birth);
        
        if(ans == 0)
            printf("Alice和Bob一样大\n\n");
        else if(ans == -1)
            printf("Alice比Bob大\n\n");
        else
            printf("Alice比Bob小\n\n");
    }
}

void input(Date *pd) {
    scanf("%04d-%02d-%02d",&(pd->year),&(pd->month),&(pd->day));
}

int day_of_year(Date d) {
   int s,n=0,i;
   int map[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
   if((d.year % 4==0 && d.year % 100 != 0)||d.year%400==0)
   map[2]=29;
   if(d.month==1)
   n=d.day;
   if(d.month != 1){
   	for(i=1;i<=d.month-1;i++){
   		s=map[i];
   		n+=s;
	   }
	   n=n+d.day;
   }
   return n;
}

int compare_dates(Date d1, Date d2) {
    int a,b;
    a=day_of_year(d1);
    b=day_of_year(d2);
    if(d1.year<d2.year)
        return -1;
    if(d1.year>d2.year)
        return 1;
    else{  
	if(a<b)
    	return -1;
    if(a==b)
    	return 0;
    if(a>b)
    	return 1;
	}
}


TASK6

#include <stdio.h>
#include <string.h>

enum Role {admin, student, teacher};

typedef struct {
    char username[20];  // 用户名
    char password[20];  // 密码
    enum Role type;     // 账户类型
} Account;


// 函数声明
void output(Account x[], int n);    // 输出账户数组x中n个账户信息,其中,密码用*替代显示

int main() {
    Account x[] = {{"A1001", "123456", student},
                    {"A1002", "123abcdef", student},
                    {"A1009", "xyz12121", student},
                    {"X1009", "9213071x", admin},
                    {"C11553", "129dfg32k", teacher},
                    {"X3005", "921kfmg917", student}};
    int n;
    n = sizeof(x)/sizeof(Account);
    output(x, n);

    return 0;
}

// 待补足的函数output()实现
// 功能:遍历输出账户数组x中n个账户信息
//      显示时,密码字段以与原密码相同字段长度的*替代显示
void output(Account x[], int n) {
    // 待补足
    // ×××
    int i, j;
    char s[][10]={"admin","student","teacher"};

    for(i = 0; i < n; i++) {
        int len = strlen(x[i].password);
        printf("%s\t\t", x[i].username);

        for(j = 0; j < len; j++) {
            printf("*");
        }

        if(len < 8)
            printf("\t\t");
        else
            printf("\t");

        switch(x[i].type) {
            case 0:
                printf("%s\n",s[0]);
                break;
            case 1:
                printf("%s\n",s[1]);
                break;
            default:
                printf("%s\n",s[2]);
        }
    }
}

标签:head,int,void,实验,printf,output,Film
From: https://www.cnblogs.com/xhzwd/p/18233851

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