#include<stdio.h>#include<string.h>void changing(char a[],int n);void change(int a){? int i,b,c=0;? char array[100];? ? b=a;? do? {? i=b%16;? b/=16; switch(i)? {? case 10: array[c]='A'; break; case 11: array[c]='B'; break; case 12: array[c]='C'; break; case 13: array[c]='D'; break; case 14: array[c]='E'; break; case 15: array[c]='F'; break; ?? ? ? default: ? ? array[c]=i+48; } ? ?c++;? }while(b!=0);? ? b=strlen(array);? ? changing(array,b);? ? puts(array);}void changing(char a[],int n){ int i; char temp; for(i=0;i<(double)n/2;i++) { temp=*(a+i); *(a+i)=*(a+n-i-1); *(a+n-i-1)=temp; }}int main(){? int a;? scanf("%d",&a);? change(a);? return 0;}