结构体练习题19

#include<stdio.h>
struct student{//利用指针变量输出结构体数组
 int num;
 char *name;
 char sex;
 float score;
}stu[3] = { { 101, "zhao lei", 'M', 45 }, { 102, "sun hui", 'M', 62.5 },
{ 103, "li fang", 'F', 92.5 } };
void main(){
 struct student *ps;
 printf("num\tName\t\tSex\tScore\n");
 for (ps = stu; ps < stu + 3; ps++)
  printf("%d\t%s\t\t%c\t%f\n", ps->num, ps->name, ps->sex, ps->score);
 system("pause");
}

#define  _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
struct student{//结构体数组的引用
 int num;
 char name[15];
 int score[3];
}stu[] = { { 1, "david", { 80, 78, 92 } }, { 2, "lily", { 90, 84, 89 } }, { 3, "alice", { 79, 78, 96 } } };
void main(){
 int i, j, num;
 printf("input student's number:");
 scanf("%d", &num);
 for (i = 0; i < 3; i++)
  if (num == stu[i].num)
   break;
   printf("name=%s\n", stu[i].name);
  for (j = 0; j < 3; j++)
   printf("%d ", stu[i].score[j]);
  printf("\n");
 system("pause");
}

#include<stdio.h>
struct student//指向结构体变量的指针使用
{
 int num;
 char *name;
 char sex;
 float score;
}stu1 = { 102, "zhangping", 'M', 78.5 },*pstu;
void main(){
 pstu = &stu1;
 printf("Number=%d\nName=%s\n", stu1.num, stu1.name);
 printf("Sex=%c\nScore=%f\n\n", stu1.sex, stu1.score);
 printf("Number=%d\nName=%s\n", (*pstu).num, (*pstu).name);
 printf("Sex=%c\nScore=%f\n\n", (*pstu).sex, (*pstu).score);
 printf("Number=%d\nName=%s\n", pstu->num, pstu->name);
 printf("Sex=%c\nScore=%f\n\n", pstu->sex, pstu->score);
 system("pause");
}