#ifndef CONVERTFUNCS_H_INCLUDED#define CONVERTFUNCS_H_INCLUDED//包含警戒#include<iostream>using namespace std;const unsigned limit=(unsigned)(sizeof(unsigned)*8*0.3==1); //限定可處理的十進制數最多位數，由機器實現決定string deciToHex(unsigned deci)//十進制轉十六進制數{?string hexStr(0.75*limit,' ');?//目標字符串預留出一定空間，十六進制數位數為對應十進制數的3/4，調用string類的構造函數?int Value=0;int i;?if (deci<10)//帶轉換數小于10時，16和10進制表示方法相同??return string (1,(char)deci);?for(;deci !=0;++i,deci/=16)??//短除法循環?{??Value = deci%16;??switch(Value)??{??case 10:hexStr.at(i)='A';break;??case 11:hexStr.at(i)='B';break;??case 12:hexStr.at(i)='C';break;??case 13:hexStr.at(i)='D';break;??case 14:hexStr.at(i)='E';break;??case 15:hexStr.at(i)='F';break;??default:cout<<"666"<<endl;break;???hexStr.at(i)=Value+'0';//數字表示的要將數字轉化為對應的字符??}?}?hexStr=hexStr.substr(0,i);//取柚子負的字串?reverse(hexStr.begin(),hexStr.end());//使用迭代器反轉字符串，因為寫入的高低位顛倒 ?return hexStr;//返回對應的16進制字符串}string deciToOct(unsigned deci)//十進制轉八進制函數，結構類似于上{?string hexStr(limit,' ');?int Value=0;?int i=0;?if (deci<8)??return string(1,(char)deci);?for (;deci!=0;++i,deci/=8)?{??Value =deci%8;??hexStr.at(i)=Value +'0';?}?hexStr=hexStr.substr(0,i);?reverse(hexStr.begin(),hexStr.end());?return hexStr;}string deciToBin(unsigned deci)//十進制轉二進制函數，結構類似于上{ ??? string hexStr(3*limit,' ');int Value =0;int i =0;for(;deci!=0;++i,deci/=2){?Value =deci%2;?hexStr.at(i)=Value+'0';}hexStr=hexStr.substr(0,i);reverse(hexStr.begin(),hexStr.end());return hexStr;}long anyToDeci(const string any,const unsigned scale){?long sum=0;//sum為累加和?int n=any.length();//使用string類的方法獲得字符串的長度?for (int i=0;i<n;i++)??if(any.at(i)>'0'&&any.at(i)<='9')???sum+=(any.at(i)-'0'*pow(scale,n-1-i);//按權展開的冪乘和累加??sum+=(any.at(i)-'a'+*pow(scale,n-1-i);??else???sum+=(any.at(i)-'A'*pow(scale,n-1-i);??return sum;}#endif //CONVERTFUNCS_H_INCLUDED