[英]How to encode a Hex string to Integer in BCB XE
I want to convert a hex string to a 16 bit Decimal in RAD Studio C++ Builder XE. 我想在RAD Studio C ++ Builder XE中将十六进制字符串转换为16位十进制。
For example, I have the hex string "8FC". 例如,我有一个十六进制字符串“ 8FC”。 The Binary representation of this is 100011111100. The Decimal representation of this is: 2300.
其二进制表示形式为100011111100。其十进制表示形式为:2300。
How to do this conversion in C++ Builder XE? 如何在C ++ Builder XE中进行此转换?
Finally, I find the correct way how to do this conversion on this article . 最后,我在本文上找到了正确的转换方法。 It just try to call the
StrToInt()
procedure but prepend a " $ " like this: 它只是尝试调用
StrToInt()
过程,但是像这样预先加上一个“ $ ”:
s1 = "8FC";
int i = StrToInt(UnicodeString("$") + s1);
Edit1->Text = IntToStr(i);
One easy way is to use std:stringstream
一种简单的方法是使用
std:stringstream
#include <ios>
#include <sstream>
#include <ostream>
#include <iostream> // MS & Borland seem to be deficient in requiring this
int main()
{
unsigned short val;
std::stringstream st("8FC");
st >> std::hex >> val;
// convert it back to text as decimal
st.clear();
st << std::dec << val;
std::cout << "Decimal value " << st.str() << std::endl;
}
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