例题抄写作业1
9.1
#include<stdio.h> #include<stdlib.h> main() {struct Student {long int num; char name[20]; char sex; char addr[20]; }a={10101,"li lin",'M',"123 beijing Road"}; printf("NO.;%ld\nname:%s\nsex:%c\naddress:%s\n",a.num,a.name,a.sex,a.addr); return 0; }
NO.;10101 name:li lin sex:M address:123 beijing Road -------------------------------- Process exited after 3.6 seconds with return value 0 请按任意键继续. . .
9.2
#include<stdio.h> main() {struct Student {int num; char name[20]; float score; }student1,student2; scanf("%d,%s,%f",&student1.num,&student1.name,&student1.score); scanf("%d,%s,%f",&student2.num,&student2.name,&student2.score); printf("The higher score is:\n"); if(student1.score>student2.score) printf("%d,%s,%f",student1.num,student1.name,student1.score); else if(student1.score<student2.score) printf("%d,%s,%f",student2.num,student2.name,student2.score); else {printf("%d,%s,%f",student1.num,student1.name,student1.score); printf("%d,%s,%f",student2.num,student2.name,student2.score); } return 0; }
1 w 85 2 p 96 The higher score is: 2 p 96.00 -------------------------------- Process exited after 33.65 seconds with return value 13 请按任意键继续. . .
9.3
#include<string.h> #include<stdio.h> struct Person//声明结构体类型 struct person {char name[20];//候选人姓名 int count;//候选人的票数 } leader[3]={"li",0,"zhang",0,"Sun",0};//定义结构体数组并初始化 int main() {int i,j; char leader_name[20]; for(i=1;i<=10;i++) {scanf("%s",leader_name);//输入所选的候选人姓名 for(j=0;j<3;j++) if(strcmp(leader_name,leader[j].name)==0)leader[j].count++; } printf("\nResult:\n"); for(i=0;i<3;i++) printf("%5s:%d\n",leader[i].name,leader[i].count); return 0; }
Li Zhang Li LI Zhang Li Sun Sun Li Li Result: li:0 zhang:0 Sun:2 -------------------------------- Process exited after 82 seconds with return value 0 请按任意键继续. . .
9.4
#include<stdio.h> #include<stdlib.h> struct Student//声明结构体类型 struct person { int num; char name[20]; float score; }; int main() { struct Student stu[5]={{10101,"zhang",78},{10103,"wang",98},{10106,"li",86},{10108,"ling",73},{10110,"sun",100}};//定义结构体数组并初始化 struct Student temp; const int n=5; int i,j,k;//定义常变量n printf("the order is:\n"); for(i=0;i<n-1;i++) {k=i; for(j=i+1;j<n;j++) if(stu[j].score>stu[k].score) k=j; temp=stu[k];stu[k]=stu[i];stu[i]=temp; //stu[k]和stu[i]元素互换 } for(i=0;i<n;i++) printf("%d,%s,%d",stu[i].num,stu[i].name,stu[i].score); printf("\n"); return 0; }
the order is: 10110,sun,010103,wang,010106,li,010101,zhang,010108,ling,0 -------------------------------- Process exited after 3.486 seconds with return value 0 请按任意键继续. . .
9.5
#include<stdio.h> #include<string.h> main() {struct Student {long num; char name[20]; char sex; float score; }; struct Student stu_1;//定义struct student类型的变量stu_1 struct Student *p;//定义指向struct student类型数据的指针变量p p=&stu_1;//p指向stu—1 stu_1.num=10101;//对结构体变量的成员赋值 strcpy(stu_1.name,"li lin");//用字符串复制函数给stu_1.name赋值 stu_1.sex='M'; stu_1.score=89; printf("NO.:%ld\nname:%s\nsex:%c\nscore:%d\n",stu_1.num,stu_1.name,stu_1.sex,stu_1.score); printf("NO.:%ld\nname:%s\nsex:%c\nscore:%d\n",(*p).num,(*p).name,(*p).sex,(*p).score); return 0; }
NO.:10101 name:li lin sex:M score:0 NO.:10101 name:li lin sex:M score:0 -------------------------------- Process exited after 3.366 seconds with return value 0 请按任意键继续. . .
9.6
#include <stdio.h> struct student { int num; char name[20]; char sex; int age; }; struct student stu[3] = { { 10101, "Li Lin", 'M', 18 }, { 10102, "Zhang Fang", 'M', 19 }, { 10103, "Wang Min", 'F', 20 } }; int main() { struct student *p; p = stu; printf("No. Name sex age\n"); for (; p < stu + 3; p++) printf("%5d %-20s%2c%4d\n", p->num, p->name, p->sex, p->age); }
No. Name sex age 10101 Li Lin M 18 10102 Zhang Fang M 19 10103 Wang Min F 20 -------------------------------- Process exited after 3.431 seconds with return value 4206752 请按任意键继续. . .
9.7
#include<stdio.h> struct student { int num; char name[20]; float score[3]; float aver; }; void input(struct student stu[]) { int i; printf("请输入各学生的信息:学号,姓名,三门课成绩:\n"); for (i = 0; i < 3; i++){ scanf("%d%s%f%f%f", &stu[i].num, &stu[i].name, &stu[i].score[0], &stu[i].score[1], &stu[i].score[2]); stu[i].aver = (stu[i].score[0] + stu[i].score[1] + stu[i].score[2]) / 3.0; } } struct student max(struct student stu[]) { int i, m = 0; for (i = 1; i<3; i++) if (stu[i].aver>stu[m].aver) m = i; return stu[m]; } void print(struct student stud) { printf("\n成绩最高的学生是:\n"); printf("学号:%d\n姓名: %s\n三门课成绩: %5.1f ,%5.1f,%5.1f\n平均成绩:%5.1f\n", stud.num, stud.name, stud.score[0], stud.score[1], stud.score[2], stud.aver); } int main() { //void input (struct student stu[]); //struct student max(struct student stu[]); //void print(struct student stu); struct student stu[3], *p = stu; input(p); print(max(p)); return 0; }
请输入各学生的信息:学号,姓名,三门课成绩: