#include "iostream"
using namespace std;
#define MAX 50
int main()
{
int elem2[MAX];
char elem16[MAX];
cout <<
"请输入十六进制数，并以‘$’结束：";
int flag =
1;
char ch;
int i =
0;
while (flag)
{
cin >> ch;
if (ch !=
'$')
{
elem16[i] = ch;
i++;
}
else
{
flag =
0;
}
}
int length1 = i;
int length2 =
0;
int n =
0;
int sum =
0;
for (n =
0; n < length1; n++)
{
int x = (
int)elem16[n];
if ((x >=
48 && x <=
57) || (x >=
65 && x <=
70))
sum++;
}
if (sum == length1)
{
int j =
0;
int number =
0;
int k =
0;
int p =
0;
int m =
0;
int cout =
3;
for (j =
0; j < length1; j++)
{
m =
cout;
int x = (
int)elem16[j];
if (x >=
48 && x <=
57)
{
number = elem16[j] -
48;
}
else if (x >=
65 && x <=
70)
{
number = elem16[j] -
55;
}
if (number !=
1)
{
do
{
elem2[m] = number %
2;
number = number /
2;
length2++;
k++;
m--;
}
while (number>
1);
if (k ==
3)
{
elem2[m] =
1;
length2++;
m--;
}
else
{
elem2[m] =
1;
m--;
length2++;
for (p =
0; p <
3-k; p++)
{
elem2[m] =
0;
length2++;
m--;
}
}
k =
0;
}
else
{
elem2[m] =
1;
m--;
length2++;
for (p =
0; p <
3; p++)
{
elem2[m] =
0;
length2++;
m--;
}
}
cout =
cout +
4;
}
}
else
{
cout <<
"输入的不是十六进制数！";
}
cout <<
"正序输出：";
for (i =
0; i < length2; i++)
cout << elem2[i] <<
" ";
cout << endl;
return 0;
}
