C++将LARGE_INTEGER转换为String

Question

我有一个由操作形成的更大的整数

__int64 c = (bytesTransferred.HighPart*2^31 + bytesTransferred.LowPart) * 100/(fileSize.HighPart*2^31 + bytesTransferred.LowPart);

如何将其转换为字符串以在消息框中显示它？我试过了:

std::string percent;
std::stringstream strstream;
strstream << c;
strstream >> percent;

但没有奏效.

Answer 1

std::string to_string( long long value );