59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
#include<iostream>
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#include<string>
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#include<vector>
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#include<iomanip>
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using namespace std;
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int powe(int,int);
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int main()
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{
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string s;
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short b,e;
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while(cin>>s>>b>>e)
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{
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vector<char> v;
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string str="";
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int sum=0;
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for(int i=s.size()-1,c=0;i>=0;--i,++c)
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{
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if(s[i]>='0'&&s[i]<='9')
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sum+=(s[i]-48)*powe(b,c);
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if(s[i]>='A'&&s[i]<='F')
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sum+=(s[i]-55)*powe(b,c);
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}
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int r;
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while(sum!=0)
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{
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r=sum%e;
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if(r>=0&&r<=9)
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v.push_back(r+48);
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else if(r==10)
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v.push_back('A');
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else if(r==11)
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v.push_back('B');
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else if(r==12)
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v.push_back('C');
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else if(r==13)
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v.push_back('D');
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else if(r==14)
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v.push_back('E');
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else
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v.push_back('F');
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sum/=e;
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}
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for(int i=v.size()-1;i>=0;--i)
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str+=v[i];
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if(str.size()>7)
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cout<<setw(7)<<right<<"ERROR"<<endl;
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else
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cout<<setw(7)<<right<<str<<endl;
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}
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return 0;
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}
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int powe(int m,int n)
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{
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int sum=1;
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while(n--)
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sum*=m;
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return sum;
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}
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