进制间的转换（c++类）

来源：互联网发布：java多线程返回值编辑：程序博客网时间：2024/06/01 20:58

闲来无事，用c++类写了个进制间的转换。

//功  能：1、十进制转换为任意进制    2、任意进制转换为十进制#include <iostream>#include <cstdio>#include <cstring>#include <cmath>#include <windows.h>using namespace std;class SysConvert{public:SysConvert(){}SysConvert(char *_sysnum,int _sys);SysConvert(int _dnum,int _sys);void Convert();    //十进制转换为任意进制void Convertd();   //任意进制转换为十进制char* GetRes();int GetDnum();private:int dnum;int sys;char res[256];char sysnum[256];};SysConvert::SysConvert(int _dnum,int _sys){if(_sys>26){MessageBox(NULL,TEXT("The system is too large!"),TEXT("ERROR"),MB_ICONERROR);exit(0);}dnum=_dnum;sys=_sys;}SysConvert::SysConvert(char *_sysnum,int _sys){strcpy(sysnum,_sysnum);sys=_sys;}void SysConvert::Convert(){char _res[256];int num(dnum),i(0);while(num){int temp=num%sys;if(temp>9){_res[i++]='A'+(temp-10);}else _res[i++]=char(temp+'0');num/=sys;}int j;for(j=0;j<i;j++)res[j]=_res[i-j-1];res[j]=0;}char* SysConvert::GetRes(){return res;}int SysConvert::GetDnum(){return dnum;}void SysConvert::Convertd(){int len=strlen(sysnum),sum(0);for(int i=len-1;i>=0;i--){int temp;if(sysnum[i]>='A'){temp=10+(sysnum[i]-'A');}else temp=sysnum[i]-'0';sum+=temp*pow(sys*1.0,len-i-1);}dnum=sum;}int main(){int ncase;cin>>ncase;while(ncase--){int x1,y1;cin>>x1>>y1;SysConvert sysconvert1(x1,y1);sysconvert1.Convert();cout<<sysconvert1.GetRes()<<endl;char x[234];int y;scanf("%s%d",x,&y);SysConvert sysconvert(x,y);sysconvert.Convertd();cout<<sysconvert.GetDnum()<<endl;}return 0;}