嵌入式3-12

1.整理思维导图

2.把上课没做完的结构体大小求完(写出过程)

3.把枚举部分的练习题，再做一遍

4.三种验证大小端存储大的代码写一遍

1.思维导图在最后
2.结构体大小

struct data{ 1233000044444444，16字节
char t1;
char t2;
unsigned short t3;
unsigned long t4;
};

struct data{ 100022223300，12字节
char t1;
int t2;
short t3;
};

struct s1 100022223000，12字节
{
char c1;
int i;
char c2;
};

struct s2 12003333，8字节
{
char c1;
char c2;
int i;
};

typedef struct Test 1100000000002222222222223333，28字节
{
short a;
        struct       111122223000,12字节
        {
        int b;
        double c;
        char d;
        }p;
int e;
}Test;

typedef struct Test   2+6+96+4+4，112字节
{
short a;
        struct 4+4+80+1+7,96字节
        {
        int b;
        double c[10];
        char d;
        };
int e;
}Test;

struct c{ 100022223300，12字节
char b;
int a;
short c;
};

struct c{ 12223，5字节
char a;
char b[3];
char c;
};

typedef struct 4+1+3+8+1+3+4+8，32字节
{
int b;
char a;
long e;
char c;
float d;
double t;
}node;

3.枚举
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
typedef enum
{
   LED_1,
   LED_2,
   LED_3
}LED;
typedef enum
{
   ON,
   OFF
}LED_CON;
void init(LED L)
{
   switch(L)
   {
       case LED_1:
           printf("初始化了LED_1灯\n");
           break;
       case LED_2:
           printf("初始化了LED_2灯\n");
           break;
       case LED_3:
           printf("初始化了LED_3灯\n");
           break;
   }
}
void con(LED L,LED_CON C)
{
   switch(L)
   {
       case LED_1:
           switch(C)
           {
               case ON:
                   printf("打开了LED_1灯\n");
                   break;
           }
           break;
       case LED_2:
           switch(C)
           {
               case ON:
                   printf("打开了LED_2灯\n");
                   break;
           }
           break;
       case LED_3:
           switch(C)
           {
               case ON:
                   printf("打开了LED_3灯\n");
                   break;
           }
           break;
   }
}
int main(int argc, const char *argv[])
{
   init(LED_1);
   con(LED_2,ON);
   return 0;
}