UVA-10473- Simple Base Conversion

#include<stdio.h>int main(){    char shu[999];    int shuzi;    while(gets(shu)!=NULL)    {        if(shu[0]=='-')            //要求当输入负数时跳出！不是-1时跳出！            break;        if(shu[1]=='x')        {            sscanf(shu,"%x",&shuzi);            printf("%d\n",shuzi);        }        else        {            sscanf(shu,"%d",&shuzi);            printf("0x%X\n",shuzi);        }    }    return 0;}