#include
char bcd[10][5]={"0000","0001","0010","0011","0100","0101","0110","0111","1000","1001"};
void hex2bcd(int x)
{if(x>9)hex2bcd(x/10);
printf("%s ",bcd[x%10]);
}
int main()
{int n;
printf("请输入一个十六进制数：");
scanf("%x",&n);
hex2bcd(n);
return 0;
}
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