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问题描述
我试图在VisualStudio 2010上测试 rdtsc 。我的代码：
I tried to test rdtsc on VisualStudio 2010. Heres my code:
#include <iostream>
#include <windows.h>
#include <intrin.h>
using namespace std;
uint64_t rdtsc()
{
return __rdtsc();
}
int main()
{
cout << rdtsc() << "\n";
cin.get();
return 0;
}
但我遇到错误：
------ Build started: Project: test_rdtsc, Configuration: Debug Win32 ------
main.cpp
c:\documents and settings\student\desktop\test_rdtsc\test_rdtsc\main.cpp(12): error C2146: syntax error : missing ';' before identifier 'rdtsc'
c:\documents and settings\student\desktop\test_rdtsc\test_rdtsc\main.cpp(12): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
c:\documents and settings\student\desktop\test_rdtsc\test_rdtsc\main.cpp(13): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
c:\documents and settings\student\desktop\test_rdtsc\test_rdtsc\main.cpp(14): warning C4244: 'return' : conversion from 'DWORD64' to 'int', possible loss of data
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
我该怎么办？我不想把 uint64_t 改成 DWORD64 。为什么VisualStudio不理解 uint64_t ？
What should I do? I dont want to change uint64_t into DWORD64. Why VisualStudio doesnt understand uint64_t?
推荐答案
$ c> #include< stdint.h> 。或者（更好） #include< cstdint> 。
You have to #include <stdint.h>. Or (better) #include <cstdint>.
Visual Studio已开始使用2010版本提供这些标头。
Visual Studio started shipping those headers with the 2010 version.
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