C言語進数変換コード共有

#include
int main()
{
 char ku[16]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
 int zh[32],i=0,w,j;
 long int b,y;
 printf("         ，         2~16     ：
");
 scanf("%d",&y);
 b=y;
 printf("          :");
 scanf("%d",&w);
 printf("
");
 do
 {
  zh[i]=y%w;
  i++;
  y=y/w;
 }
 while(y!=0);
 printf("     %ld   %d  :",b,w);
 for(i--;i>=0;i--)
 {
  j=zh[i];
  printf("%c",ku[j]);
 }
 printf("
");
 return 0;
}