C语言实现 数据类型占多少字节指针占多少字节

#include<stdio.h>void main(){  //使用sizeof验证数据类型在内存中占用的空间大小//  char//  int//  short//  long//  unsigned int//  float//  double//  long double  printf("在64位机器中：/n");  printf("    char类型占%d个字节/n",sizeof(char));  printf("    short类型占%d个字节/n",sizeof(short));  printf("     int类型占%d个字节/n",sizeof(int));  printf("    long类型占%d个字节/n",sizeof(long));  printf("unsigned int类型占%d个字节/n",sizeof(unsigned int));  printf("    float类型占%d个字节/n",sizeof(float));  printf("   double类型占%d个字节/n",sizeof(double));  printf(" long double类型占%d个字节/n",sizeof(long double));  printf("-------------------指针占4个字节---------------------/n");  char *p0;  short *p1;  int *p2;  long *p3;  unsigned int *p4;  float *p5;  double *p6;  long double *p7;  printf("    char类型指针占%d个字节/n",sizeof(p0));  printf("    short类型指针占%d个字节/n",sizeof(p1));  printf("     int类型指针占%d个字节/n",sizeof(p2));  printf("    long类型指针占%d个字节/n",sizeof(p3));  printf("unsigned int类型指针占%d个字节/n",sizeof(p4));  printf("    float类型指针占%d个字节/n",sizeof(p5));  printf("   double类型指针占%d个字节/n",sizeof(p6));  printf(" long double类型指针占%d个字节/n",sizeof(p7));}

在64位机器中：    char类型占1个字节    short类型占2个字节     int类型占4个字节    long类型占4个字节unsigned int类型占4个字节    float类型占4个字节   double类型占8个字节 long double类型占12个字节-------------------指针占4个字节---------------------    char类型指针占4个字节    short类型指针占4个字节     int类型指针占4个字节    long类型指针占4个字节unsigned int类型指针占4个字节    float类型指针占4个字节   double类型指针占4个字节 long double类型指针占4个字节

//十进制转ASCII码//年#define KB2ASC(x) (u8)(0x30+x)//ASCII码转十进制//年#define ASC2KB(x) (u8)(x%(0x30))