避免歧义直接看效果:
计算器验证:
代码段:
#include <iostream>
#include <string>
#include <afx.h>
using namespace std;
int main()
{
string data1 = "002FD25D";
char data2[128] = {0};
unsigned char data3[128] = {0};
int lenth = data1.length();
memcpy(data2,data1.c_str(), lenth);
for (int i = 0;i < lenth; i++)
{
if (data2[i] >= '0' && data2[i] <= '9')
{
data3[i] = data2[i];
}
else
{
switch (data2[i])
{
case 'A': data3[i] = 0x0A + '0'; break;
case 'B': data3[i] = 0x0B + '0'; break;
case 'C': data3[i] = 0x0C + '0'; break;
case 'D': data3[i] = 0x0D + '0'; break;
case 'E': data3[i] = 0x0E + '0'; break;
case 'F': data3[i] = 0x0F + '0'; break;
default: return -1;
}
}
}
if (lenth != 8) return -2;
long unsigned int count = (data3[0] - '0') * 16 * 16 * 16 * 16 * 16 * 16 *16|
(data3[1] - '0') * 16 * 16 * 16 * 16 * 16 * 16 |
(data3[2] - '0') * 16 * 16 * 16 * 16 * 16 |
(data3[3] - '0') * 16 * 16 * 16 * 16 |
(data3[4] - '0') * 16 * 16 *16 |
(data3[5] - '0') * 16 * 16 |
(data3[6] - '0') * 16 |
(data3[7] - '0');
printf("组合的数据: %ld\n", count);
string data4 = to_string(count);
printf("转换的数据: %s\n\n", data4.c_str());
system("pause");
}
注意项:如果位数不定可以配合 pow() 完成自适应长度
简洁方式:
#include <iostream>
#include <afxext.h>
........
........
CString strDec, strHex;
strHex = "234EDA12";
DWORD dwHex = strtoul((const char*)strHex.GetBuffer(0), NULL, 16);
strDec.Format(_T("%d"), dwHex);
printf("%s",strDec.GetBuffer(0));
.......
......
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