实验6
1
`#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 st[],int n){
int i;
for(i=0;i<n;i++)
scanf("%d %s %s %lf %lf %lf",&st[i].id,st[i].name,st[i].subject,&st[i].perf,&st[i].mid,&st[i].final);
}
void output(STU st[],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",st[i].id,st[i].name,st[i].subject,st[i].perf,st[i].mid,st[i].final,st[i].total,st[i].level);
}
void calc(STU st[],int n){
int i;
for(i=0;i<n;i++){
st[i].total=st[i].perf0.2+st[i].mid0.2+st[i].final*0.6;
if(st[i].total>=90)
strcpy(st[i].level,"you");
else if(st[i].total>=80&&st[i].total<90)
strcpy(st[i].level,"liang");
else if(st[i].total>=70&&st[i].total<80)
strcpy(st[i].level,"zhong");
else if(st[i].total>=60&&st[i].total<70)
strcpy(st[i].level,"jige");
else if(st[i].total<60)
strcpy(st[i].level,"bujige");
}
}
int fail(STU st[],STU t[],int n){
int i,cnt=0;
for(i=0;i<n;i++)
if(st[i].total<60)
t[cnt++]=st[i];
return cnt;
}
void sort(STU st[],int n){
int i,j;
STU t;
for(i=0;i<n-1;i++)
for(j=0;j<n-1-i;j++)
if(st[j].total<st[j+1].total){
t=st[j];
st[j]=st[j+1];
st[j+1]=t;
}
}`
2
`#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;
}`
3.1
`#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;
}
}`
3.2
`#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);
Film *insert(Film *head, int n);
int main() {
int n;
Film *head;
Film *p;
p = (Film *)malloc(sizeof(Film));
p->next = NULL;
head = p;
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->next;
head->next = p;
}
return head;
}
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;
}
}`
4
`#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] = {{"978-7-229-14156-1", "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;
}
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);
}
}
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;
}
}
}
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;
}`
5
`#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();
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 % 40 && d.year % 100 != 0)||d.year%4000)
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;
}
}`
6
`#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 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]);
}
}
}`
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