C 语言之结构体

  1 #include <stdio.h>
  2 
  3 #include <struct.h>
  4 
  5 #include <string.h>
  6 
  7  
  8 
  9 // struct 是结构体的关键词。
 10 
 11 typedef struct Student
 12 
 13 {
 14 
 15     char name[30];
 16 
 17     char addr[50];
 18 
 19     int age;
 20 
 21 }STU;//   STU=struct Student
 22 
 23  
 24 
 25  
 26 
 27  
 28 
 29 int main(int argc, const char * argv[]) {
 30 
 31     STU student1;
 32 
 33     STU student2;
 34 
 35     
 36 
 37     strcpy(student1.name,"张三");
 38 
 39     strcpy(student1.addr,"北京");
 40 
 41     student1.age=20;
 42 
 43     
 44 
 45     strcpy(student2.name,"李四");
 46 
 47     strcpy(student2.addr, "四川");
 48 
 49     student2.age=30;
 50 
 51     
 52 
 53     printf("-------------利用指针访问结构体成员。\n");
 54 
 55     STU *pointer1=&student1;
 56 
 57     printf("student1.name = %s\n",pointer1->name);
 58 
 59     printf("student1.addr = %s\n",pointer1->addr);
 60 
 61     printf("student1.age = %d\n",pointer1->age);
 62 
 63     STU *pointer2=&student2;
 64 
 65     printf("student2.name = %s\n",pointer2->name);
 66 
 67     printf("student2.addr = %s\n",pointer2->addr);
 68 
 69     printf("student2.age = %d\n",pointer2->age);
 70 
 71     
 72 
 73     printf("-------------利用指针访问结构体地址和结构体中成员的地址。\n");
 74 
 75     printf("&student1 = %p\n",&student1);
 76 
 77     printf("&(pointer->name) = %p\n",&(pointer1->name));
 78 
 79     printf("&(pointer->name) = %p\n",&(pointer1->addr));
 80 
 81     printf("&(pointer->name) = %p\n",&(pointer1->age));
 82 
 83  
 84 
 85     
 86 
 87     printf("-------------利用结构体访问地址。\n");
 88 
 89     printf("&(student1.name) = %p\n",&(student1.name));
 90 
 91     printf("&(student1.addr) = %p\n",&(student1.addr));
 92 
 93     printf("&(student1.age) = %p\n",&(student1.age));
 94 
 95     
 96 
 97     
 98 
 99     
100 
101     return 0;
102 
103 }