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实验6

时间:2024-12-19 11:42:53浏览次数:4  
标签:int else ++ 实验 printf month day

任务4

源代码

#include<stdio.h>
#define N 10
typedef struct {
    char isbn[20];
    char name[80];
    char author[80];
    double sales_price;
    int sales_count;
}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] = {{"978-7-5327-6082-4", "门将之死", "罗纳德.伦", 42, 51},
                 {"978-7-308-17047-5", "自由与爱之地:入以色列记", "云也退", 49 , 30},
                 {"978-7-5404-9344-8", "伦敦人", "克莱格泰勒", 68, 27},
                 {"978-7-5447-5246-6", "软件体的生命周期", "特德姜", 35, 90}, 
                 {"978-7-5722-5475-8", "芯片简史", "汪波", 74.9, 49},
                 {"978-7-5133-5750-0", "主机战争", "布莱克.J.哈里斯", 128, 42},
                 {"978-7-2011-4617-1", "世界尽头的咖啡馆", "约翰·史崔勒基", 22.5, 44},
                 {"978-7-5133-5109-6", "你好外星人", "英国未来出版集团", 118, 42},
                 {"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},
                 {"978-7-229-14156-1", "源泉", "安.兰德", 84, 59}};
    printf("图书销量排名(按销售册数): \n");
    sort(x, N);
    output(x, N);
    
    printf("\n图书销售总额: %.2f\n", sales_amount(x, N));
    
    return 0;
    
}

void output(Book x[], int n){
    int i; 
    Book *p;
    p = x;
    printf("ISBN号              书名                          作者                售价    销售册数\n"); 
    for(i = 0;i < n; i++){
        printf("%-20s%-30s%-20s%-8g%-8d\n",x[i].isbn,x[i].name,
                           x[i].author,x[i].sales_price,x[i].sales_count);
    }
    
}
void sort(Book x[], int n){
    int i,j;
    Book t;
    for(i = 0;i < n; i++)
        for(j = 0; j < n - i - 1; j++){
        if(x[j].sales_count < x[j + 1].sales_count){
            t = x[j];
            x[j] = x[j + 1];
            x[j + 1] = t;
        }
    }
}
double sales_amount(Book x[], int n){
    double s=0;
    int i;
    for(i = 0; i < n; i++){
        s += x[i].sales_price * x[i].sales_count;
    }
    return s;
}

 

运行结果

 

任务5

 源代码

#include <stdio.h>

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

void input(Date* pd);
int day_of_year(Date d);
int compare_dates(Date d1,Date d2);

void test1() {
    Date d;
    int i;
    printf("输入日期:(以形如2024-12-16这样的形式输入)\n");
    for(i = 0;i < 3; i++) {
        input(&d);
        printf("%d-%02d-%02d是这一年中的第%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2024-12-16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");    
    }
}

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

int day_of_year(Date d){
    int s = 0;
    if((d.year%4==0&&d.year%100!=0)||d.year%400==0){
        if(d.month == 1)
            s=d.day;
        else if(d.month == 2)
            s=31 + d.day;
        else if(d.month == 3)
            s=60 + d.day;
        else if(d.month == 4)
            s=91 + d.day;
        else if(d.month == 5)
            s=121 + d.day;
        else if(d.month == 6)
            s=152 + d.day;
        else if(d.month == 7)
            s=182 + d.day;
        else if(d.month == 8)
            s=213 + d.day;
        else if(d.month == 9)
            s=244 + d.day;
        else if(d.month == 10)
            s=274 + d.day;
        else if(d.month == 11)
            s=305 + d.day;
        else if(d.month == 12)
            s=335 + d.day;
    }
    else{
        if(d.month == 1)
            s=d.day;
        else if(d.month == 2)
            s=31 + d.day;
        else if(d.month == 3)
            s=59 + d.day;
        else if(d.month == 4)
            s=90 + d.day;
        else if(d.month == 5)
            s=120 + d.day;
        else if(d.month == 6)
            s=151 + d.day;
        else if(d.month == 7)
            s=181 + d.day;
        else if(d.month == 8)
            s=212 + d.day;
        else if(d.month == 9)
            s=243 + d.day;
        else if(d.month == 10)
            s=273 + d.day;
        else if(d.month == 11)
            s=304 + d.day;
        else if(d.month == 12)
            s=334 + d.day;
    }
    return s;
}

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

 

运行结果

 

任务6

源代码

 

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

enum Role {admin, student, teacher};

typedef struct {
    char username[20];
    char password[20];
    enum Role type;
} Account;

void output(Account x[], int n);

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;
}

void output(Account x[], int n) {
    int len,i,j;
    for(i = 0; i < n; i++){
        len = strlen(x[i].password);
        for(j = 0; j < len; j++){
            x[i].password[j]='*';
        }
}

    for(i = 0; i < n; i++){
    printf("%-20s%-20s",x[i].username,x[i].password);
    if((enum Role)x[i].type==0)
        printf("admin\n");
    else if((enum Role)x[i].type==1)
        printf("student\n");
    else
        printf("teacher\n");
}
}
                 

 

运行结果

 

 

任务7

源代码

 

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

typedef struct {
    char name[20];
    char phone[12];
    int vip;
}Contact;

void set_vip_contact(Contact x[], int n, char name[]);
void output(Contact x[], int n);
void display(Contact x[], int n);

int main(){
    Contact list[N] = {{"刘一", "15510846604", 0},
                          {"陈二", "18038747351", 0},
                       {"张三", "18853253914", 0},
                       {"李四", "13230584477", 0},
                       {"王五", "15547571923", 0},
                       {"赵六", "18856659351", 0},
                       {"周七", "17705843215", 0},
                       {"孙八", "15552933732", 0},
                       {"吴九", "18077702405", 0},
                       {"郑十", "18820725036", 0}};
    int vip_cnt, i;
    char name[20];
    
    printf("显示原始通讯录信息: \n");
    output(list,N);
    
    printf("\n输入要设置的紧急联系人个数: ");
    scanf("%d", &vip_cnt);
    printf("输入%d个紧急联系人姓名:\n", vip_cnt);
    for(i = 0; i < vip_cnt; i++){
        scanf("%s",name);
        set_vip_contact(list, N, name);
    }
    printf("\n显示通讯录列表:(按姓名字典序升序排列,紧急联系人最先显示)\n");
    display(list, N);
    
    return 0;
}

void set_vip_contact(Contact x[], int n, char name[]){
    int i = 0;
    for(i = 0; i < n; i++){
        if(strcmp(x[i].name,name) == 0){
            x[i].vip = 1;
        }
    }
}
void output(Contact x[], int n){
    int i;
    for(i = 0;i < n; i++) {
        printf("%-10s%-15s",x[i].name,x[i].phone);
        if(x[i].vip==1)
            printf("%5s","*");
        printf("\n");
    }
}
void display(Contact x[], int n){
    int i,j=0,cnt=0;
    Contact t;
    for(i = 0; i < n; i++){
        if(x[i].vip == 1){
            cnt++;
            t = x[j];
            x[j] = x[i];
            x[i] = t;
            j++;
        }
    }
    
    for(i = 0; i < cnt; i++){
        for(j = 0; j < cnt - 1 - i; j++){
        if(strcmp(x[j].name,x[j + 1].name)>0){
            t = x[j];
            x[j] = x[j+1];
            x[j+1] = t;
        }
    }
}
    for(i = 0; i < n; i++){
        for(j = cnt; j < n - 1 - i; j++){
        if(strcmp(x[j].name,x[j + 1].name)>0){
            t = x[j];
            x[j] = x[j+1];
            x[j+1] = t;
        }    
    }
}
    output(x, n);

}

 

运行结果

 

 

标签:int,else,++,实验,printf,month,day
From: https://www.cnblogs.com/syqsyqsyqsyq/p/18612818

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