python/C++课程/第二课字节与进制转换/2to10.cpp

#include<iostream>
#include<conio.h>

using namespace std;

//<2F><><EFBFBD><EFBFBD> x<><78>n<EFBFBD>η<EFBFBD> 
double power (int x, int n)
{ 
	int result=1;
	for(int i=0;i<n;i++)
	{
		result=result*x;
	}
	return result;
} 

int main() 
{     
     int all=0;
	 string p = "1011";     
     for( int i=0;i<p.length();i++)
     {     
       if(p[p.length()-i-1]=='1')
       {       	
       	all=all+power(2,i);  		
	   }           
	 }      
  	cout<<all<<endl;
  	
  	getch();
  	return 0;
}