g++ 4.8 auto does not name a type

为什么auto关键字报这个错误呢

#include "test.h"
#include <iostream>

using namespace std;

int main(){
double dval = 3.14;
//double fval = 2.0;
//double &dval2 = dval;
//const double &dval3 = dval;
//double const *dval4 = &dval;
//int const i = 1;
auto x = dval;
}

c++11?auto auto c++11
[解决办法]
参数里加上 -std=c++11再试试
[解决办法]

引用:

参数里加上 -std=c++11再试试

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