#include"iostream"
#include"string"
using namespace std;
int main()
{
string strHex;
int n;
cin>>n; //需要转换的个数
for (int i = 0; i < n; ++i)
{
cin>>strHex;
string strBin="";
for(int j = 0 ; j < strHex.length() ; j++){
switch(strHex[j]){
case '0':strBin+="0000";break;
case '1':strBin+="0001";break;
case '2':strBin+="0010";break;
case '3':strBin+="0011";break;
case '4':strBin+="0100";break;
case '5':strBin+="0101";break;
case '6':strBin+="0110";break;
case '7':strBin+="0111";break;
case '8':strBin+="1000";break;
case '9':strBin+="1001";break;
case 'A':strBin+="1010";break;
case 'B':strBin+="1011";break;
case 'C':strBin+="1100";break;
case 'D':strBin+="1101";break;
case 'E':strBin+="1110";break;
case 'F':strBin+="1111";break;
default:break;
}
}
int len = strBin.length();
if(len%3==1)
strBin="00"+strBin;
else if(len%3==2)
strBin="0"+strBin;
int flag = 0;
for(int i = 0 ; i <= strBin.length()-3 ;i+=3){
int num=4*(strBin[i]-'0')+2*(strBin[i+1]-'0')+(strBin[i+2]-'0');
if(num)
flag=1;
if(flag)
cout<<num;
}
cout<<endl;
}
return 0;
}
C++十六进制转八进制
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转载自blog.csdn.net/jd_457619512/article/details/87972956
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