4. 實驗任務4
1 #include<stdio.h> 2 #define N 10 3 4 typedef struct { 5 char isbn[20]; 6 char name[80]; 7 char author[80]; 8 double sales_price; 9 int sales_count; 10 }Book; 11 12 void output(Book x[],int); 13 void sort(Book x[],int n); 14 double sales_amount(Book x[],int); 15 16 int main() 17 { 18 Book x[N]={{"978-7-229-14156-1","源泉","安·蘭德",84,59}, 19 {"978-7-5133-5261-1", "李白來到舊金山", "譚夏陽",48,16}, 20 {"978-7-5617-4347-8", "陌生人日記", "周怡芳", 72.6,27}, 21 {"978-7-5722-5475-8", "晶片簡史", "汪波", 74.9, 49}, 22 {"978-7-5046-9568-0", "資料化決策", "道格拉斯·W·哈伯德", 49, 42}, 23 {"978-7-5133-4388-6", "美好時代的背後", "凱瑟琳.布", 34.5, 39}, 24 {"978-7-1155-0509-5", "無窮的開始:世界進步的本源", "戴維·多伊奇", 37.5,55}, 25 {"978-7-5321-5691-7", "何為良好生活", "陳嘉映", 29.5 , 31}, 26 {"978-7-5133-5109-6", "你好外星人", "英國未來出版集團", 118,42}, 27 {"978-7-2011-4617-1", "世界盡頭的咖啡館", "約翰·史崔勒基", 22.5,44}}; 28 29 printf("圖書館銷量排名：\n"); 30 sort(x,N); 31 output(x,N); 32 33 printf("\n圖書館銷售總額：%.2lf\n",sales_amount(x,N)); 34 35 return 0; 36 } 37 void output(Book x[],int n) 38 { 39 int i; 40 41 printf("ISBN號\t\t\t書名\t\t\t\t作者\t\t\t售價\t\t銷售冊數\n"); 42 43 for(i=0;i<n;++i) 44 printf("%-24s%-32s%-20s\t%-13.2lf\t%4d\n",x[i].isbn,x[i].name,x[i].author,x[i].sales_price,x[i].sales_count); 45 } 46 void sort(Book x[],int n) 47 { 48 int i,j,k; 49 Book min; 50 51 for(i=0;i<n-1;++i) 52 { 53 for(j=1,min=x[0],k=0;j<n-i;++j) 54 if(x[j].sales_count<min.sales_count) 55 { 56 min=x[j]; 57 k=j; 58 } 59 x[k]=x[j-1]; 60 x[j-1]=min; 61 } 62 } 63 double sales_amount(Book x[],int n) 64 { 65 int i; 66 double s=0; 67 68 for(i=0;i<n;++i) 69 s+=x[i].sales_count*x[i].sales_price; 70 71 return s; 72 }
5. 實驗任務5
1 #include<stdio.h> 2 typedef struct 3 { 4 int year; 5 int month; 6 int day; 7 }Date; 8 9 void input(Date *pd); 10 int day_of_year(Date d); 11 int compare_dates(Date d1,Date d2); 12 13 void test1(); 14 void test2(); 15 16 int main() 17 { 18 printf("測試1: 輸入日期, 列印輸出這是一年中第多少天\n"); 19 test1(); 20 21 printf("\n測試2: 兩個人年齡大小關係\n"); 22 test2(); 23 24 return 0; 25 } 26 void test1() 27 { 28 Date d; 29 int i; 30 31 printf("輸入日期:(以形如2024-06-01這樣的形式輸入)\n"); 32 for(i = 0; i < 3; ++i) { 33 input(&d); 34 printf("%04d-%02d-%02d是這一年中第%d天\n\n", d.year, d.month, d.day, day_of_year(d)); 35 } 36 37 } 38 void test2() 39 { 40 Date Alice_birth, Bob_birth; 41 int i; 42 int ans; 43 44 printf("輸入Alice和Bob出生日期:(以形如2005-08-11這樣的形式輸入)\n"); 45 for(i = 0; i < 3; ++i) 46 { 47 48 input(&Alice_birth); 49 input(&Bob_birth); 50 ans=compare_dates(Alice_birth,Bob_birth); 51 52 if(ans==0) 53 printf("Alice和Bob一樣大\n\n"); 54 else if(ans == -1) 55 printf("Alice比Bob大\n\n"); 56 else 57 printf("Alice比Bob小\n\n"); 58 } 59 60 } 61 void input(Date *pd) 62 { 63 scanf("%d-%d-%d",&pd->year,&pd->month,&pd->day); 64 } 65 int day_of_year(Date d) 66 { 67 int i,s=0; 68 69 for(i=1;i<d.month;++i) 70 if(i==1||i==3||i==5||i==7||i==8||i==10||i==12) 71 s+=31; 72 else if(i==2) 73 if(d.year%4==0&&d.year%100!=0 ||d.year%400==0) 74 s+=29; 75 else 76 s+=28; 77 else 78 s+=30; 79 80 s+=d.day; 81 82 return s; 83 } 84 int compare_dates(Date d1,Date d2) 85 { 86 if(d1.year>d2.year) 87 return 1; 88 else if(d1.year<d2.year) 89 return -1; 90 else if(d1.month>d2.month) 91 return 1; 92 else if(d1.month<d2.month) 93 return -1; 94 else if(d1.day>d2.day) 95 return 1; 96 else if(d1.day<d2.day) 97 return -1; 98 else 99 return 0; 100 }
6. 實驗任務6
1 #include<stdio.h> 2 #include<string.h> 3 #define N 20 4 5 enum Role{admin,student,teacher}; 6 7 typedef struct 8 { 9 char username[N]; 10 char password[N]; 11 enum Role type; 12 13 }Account; 14 15 void output(Account x[],int n); 16 17 int main() 18 { 19 Account x[]={{"A1001", "123456", student}, 20 {"A1002", "123abcdef", student}, 21 {"A1009", "xyz12121", student}, 22 {"X1009", "9213071x", admin}, 23 {"C11553", "129dfg32k", teacher}, 24 {"X3005","921kfmg917",student}}; 25 int n; 26 n=sizeof(x)/sizeof(Account); 27 output(x,n); 28 29 return 0; 30 } 31 void output(Account x[],int n) 32 { 33 int i,k,m; 34 35 for(i=0;i<n;++i) 36 { 37 printf("%-10s\t",x[i].username); 38 39 for(k=0;x[i].password[k]!=0;k++) 40 printf("*"); 41 42 printf(" \t"); 43 44 m=x[i].type; 45 46 if(m==0) 47 printf("admin"); 48 else if(m==1) 49 printf("student"); 50 else 51 printf("teacher"); 52 53 printf("\n"); 54 } 55 }
7. 實驗任務7
1 #include<stdio.h> 2 #include<string.h> 3 typedef struct 4 { 5 char name[20]; 6 char phone[12]; 7 int vip; 8 }Contact; 9 10 void set_vip_contact(Contact x[],int n,char name[]); 11 void output(Contact x[],int n); 12 void display(Contact x[],int n); 13 14 #define N 10 15 16 int main() 17 { 18 Contact list[N]={{"劉一", "15510846604", 0}, 19 {"陳二", "18038747351", 0}, 20 {"張三", "18853253914", 0}, 21 {"李四", "13230584477", 0}, 22 {"王五", "15547571923", 0}, 23 {"趙六", "18856659351", 0}, 24 {"周七", "17705843215", 0}, 25 {"孫八", "15552933732", 0}, 26 {"吳九", "18077702405", 0}, 27 {"鄭十", "18820725036", 0}}; 28 int vip_cnt,i; 29 char name[20]; 30 31 printf("顯示原始通訊錄資訊：\n"); 32 output(list,N); 33 34 printf("\n輸入要設定的緊急聯絡人個數："); 35 scanf("%d",&vip_cnt); 36 printf("輸入%d個緊急聯絡人姓名：\n",vip_cnt); 37 for(i=0;i<vip_cnt;++i) 38 { 39 scanf("%s",name); 40 set_vip_contact(list,N,name); 41 } 42 43 printf("\n顯示通訊錄列表：(按姓名字典升序排列，緊急聯絡人最先顯示)\n"); 44 display(list,N); 45 output(list,N); 46 47 return 0; 48 } 49 void set_vip_contact(Contact x[],int n,char name[]) 50 { 51 int i; 52 53 for(i=0;i<n;++i) 54 if(strcmp(name,x[i].name)==0) 55 { 56 x[i].vip=1; 57 break; 58 } 59 } 60 void display(Contact x[],int n) 61 { 62 int i,j,k=0; 63 Contact t; 64 65 for(i=0;i<n;++i) 66 if(x[i].vip) 67 { 68 t=x[i]; 69 x[i]=x[k]; 70 x[k++]=t; 71 } 72 73 for(i=0;i<k-1;++i) 74 for(j=0;j<k-i-1;++j) 75 if(strcmp(x[j].name,x[j+1].name)>0) 76 { 77 t=x[j]; 78 x[j]=x[j+1]; 79 x[j+1]=t; 80 } 81 for(i=k;i<n;++i) 82 for(j=k;j<n-1;++j) 83 if(strcmp(x[j].name,x[j+1].name)>0) 84 { 85 t=x[j]; 86 x[j]=x[j+1]; 87 x[j+1]=t; 88 } 89 } 90 void output(Contact x[],int n) 91 { 92 int i; 93 94 for(i=0;i<n;++i) 95 { 96 printf("%-10s%-15s",x[i].name,x[i].phone); 97 if(x[i].vip) 98 printf("%5s","*"); 99 printf("\n"); 100 } 101 }
