10 进制转16 进制输出 模板

#define N 100
#define k 16
void tran(int num)
{
int arr
,i;
for (i=0;i <N;i++)
{
arr[i]=num%k;
num=num/k;
if (num==0)
break;
}
//printf("转换为%d进制数为: ",k);
for (;i>=0;i--)
switch (arr[i])
{
case 10: printf("a");break;
case 11: printf("b");break;
case 12: printf("c");break;
case 13: printf("d");break;
case 14: printf("e");break;
case 15: printf("f");break;
default: printf("%d",arr[i]);
}
printf("\n");
}