C语言结构体的简单使用实例

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代码

#include <stdio.h>#include <stdlib.h>#include <pthread.h>struct s1{            int a ;            int b ;            int *c;};struct s2{            struct s1 s3;            struct s1 *s4;};//struct s1 s={1,2};//子线程传一个结构体struct s2 类型，并处理。void *func(void *arg){  struct s2 *fun1;  fun1 = arg;  int number = fun1->s4->a;  printf("number = %d\n",number);//输出a的值}int main(){  //struct s1 b={3,4};  //struct s2 test = {{1,2},&b};  //结构体1赋值  struct s1 b;  int k = 7;  b.a=3;  b.b=4;  //b.c = &k;  //结构体2赋值  struct s2 test;  test.s3.a=1;  test.s3.b=2;  //s4为指针，需要先声明才可使用  test.s4=(struct s1*)malloc(sizeof(struct s1));  test.s4->a=5;  test.s4->b=6;  test.s4->c=&k;  pthread_t fd;  //创建子线程func，将test传入子线程。  pthread_create(&fd,NULL,func,&test);  printf("a = %d\n",test.s3.a);  printf("b = %d\n",test.s3.b);  printf("a = %d\n",test.s4->a);  printf("b = %d\n",test.s4->b);  printf("c = %d\n",*(test.s4->c));  sleep(2);  return 0;}

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