实验六
实验任务1
程序源码
#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, 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-1-i; j++) if(s[j].total < s[j+1].total) { t = s[j]; s[j] = s[j+1]; s[j+1] = t; } }
运行结果
实验任务2
程序源码
#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; }
运行结果
实验任务3
程序源码
#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); // 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 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; head = p; // 更新头结点 } return head; } // 遍历输出链表信息 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; } }
实验任务4
程序源码
#include <stdio.h> #include<string.h> #define N 100 typedef struct { char num[10]; // 学号 int s1; // 期末成绩 int s2; // 平时成绩 double sum; // 总评 char level[10]; // 等级 } 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,j; double s=0,k; for(i=0;i<n;i++){ a[i].sum=a[i].s1*0.7+a[i].s2*0.3; s=s+a[i].sum; k=s/n;} for(i=0;i<n;i++) if(a[i].sum>k){ strcpy(a[i].level,"均分以上"); h[j++]=a[i]; } return j; }
运行结果
实验任务5
程序源码
#include <stdio.h> #include <string.h> #define N 5 typedef struct student { char name[10]; int num; int maths; int computer; int english; int sum; char level[10]; } STU; void fun(STU a[], int n); // 函数声明 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 %d %s\n", s[i].name, s[i].num, s[i].maths, s[i].computer, s[i].english, s[i].sum, s[i].level); return 0; } void fun(STU a[], int n) { int i; int min=300,max=0; 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(a[i].level,"优秀"); else if(a[i].sum==min) strcpy(a[i].level,"不及格"); else strcpy(a[i].level,"合格"); } }
运行结果
实验任务6
程序源码
#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); printf("\n一共有%d个最低分，信息如下:\n", count); output(min_list, count); return 0; } void input(STU s[], int n) { int i; for(i=0;i<n;i++) scanf("%ld%s%d",&s[i].no,s[i].name,&s[i].score); } void output(STU s[], int n) { int i; for(i=0;i<n;i++) printf("%ld%s%d",s[i].no,s[i].name,s[i].score); } int find_min_list(STU s[], STU t[], int n) { int i,min=s[0].score,k=0; for(i=0;i<n;i++){ if(s[i].score<min) min=s[i].score; } for(i=0;i<n;i++){ if(s[i].score==min) t[k++]=s[i]; } return k; }
运行结果
