实验六
task_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;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; } }
task_2
#include<stdio.h> #include<string.h> #define N 10 #define M 80 typedef struct student{ 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.海芙"}, {"《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; }
task_3
#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; } }
task_4
#include<stdio.h> #include<string.h> #define N 100 typedef struct{ char num[10]; int s1; int s2; double sum; char level[10]; }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,k=0; double sum=0.0,aver=0.0; for(i=0;i<n;i++) { a[i].sum=a[i].s1*0.7+a[i].s2*0.3; sum=sum+a[i].sum; } aver=sum/n; for(i=0;i<n;i++){ if(a[i].sum>aver){ strcpy(a[i].level,"均分以上"); h[k]=a[i]; k++; } } return k; }
task_5
#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); 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,j,k; STU b[n],l; for(j=0;j<n;j++){ a[j].sum=a[j].maths+a[j].computer+a[j].english; b[j]=a[j]; } for (i=0;i<n-1;i++) for (j=0;j<n-1-i;j++) if(b[j].sum>b[j+1].sum) { l=b[j]; b[j]=b[j+1]; b[j+1]=l; } for(k=0;k<n;k++){ if(a[k].sum==b[0].sum) strcpy(a[k].level,"不及格"); else if(a[k].sum==b[4].sum) strcpy(a[k].level,"优秀"); else strcpy(a[k].level,"合格"); } }
task_6
#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("%d %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("%d %s %d\n",s[i].no,s[i].name,s[i].score); } } int find_min_list(STU s[],STU t[],int n){ int i,j,k=0; STU l; for (i=0;i<n-1;i++) for (j=0;j<n-1-i;j++) if(s[j].score>s[j+1].score) { l=s[j]; s[j]=s[j+1]; s[j+1]=l; } for(i=0;i<n;i++){ if(s[i].score==s[0].score){ t[k]=s[i]; k++; } } return k; }
