#include <stdio.h>struct number{unsigned char j;//char s;//char s1;unsigned int i;unsigned char s2;unsigned char s3;}a1={ 1,5,'s','s'},*p=&a1;unsigned int nu[2][4]={ {1,2,3,4},{65536+500,501,502,8}};main(){double i = 241041234343.741471842423;printf("%16.20lf\n",i);printf("%16.20f\n",i);//struct number ;#if 0int i = 500;//printf("good  %d\n",p->s);p = (struct number *)(&nu[1][0]);printf("good j %d\n",p->j);printf("good i  %d\n",p->i);//printf("good s  %d\n",p->s);//printf("good s1 %d\n",p->s1);printf("good s2 %d\n",p->s2);printf("good s3 %d\n",p->s3);#endif}