C++实现进制转换(十进制转十六进制)

#include <iostream>
#include <string>
using namespace std;
int main()
{
int N;
cout<<"please input a integer:";
cin>>N;
//int k=int(log(N)/log(16))+1;  // 强制转换为整数
int k=floor(log(N)/log(16))+1;   // 向下取整
cout<<"转化后十六进制的位数为:"<<k<<endl;
string hex[]={"0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"};
int *y=new int[k];
int *n=new int[k];
n[0]=N;
for(int i=1;i<=k;++i)
{
y[i-1]=n[i-1]%16;
n[i]=n[i-1]/16;
}
string *Num=new string[k];
for(int j=0;j<k;++j)
{
Num[j]=hex[y[j]];
}
cout<<N<<"的十六进制为：";
for(int i=(k-1);i>=0;--i)
cout<<Num[i];
cout<<endl;
system("pause");
return 0;
}