我试图用c ++计算65 ^ 17.我写了下面的代码但是在65 ^ 11时得到了错误的值.计算答案的正确方法是什么？(即65 ^ 17)
代码:
long double data= 1;
int m_ne=17;
int i_data=65;
for(int i=1;i<= m_ne;i++)
{
data = data * (i_data);
std::cout.precision(15);
std::cout<<" "<<std::fixed <<data<<std::endl;
}
输出:
65.000000000000000
4225.000000000000000
274625.000000000000000
17850625.000000000000000
1160290625.000000000000000
75418890625.000000000000000
4902227890625.000000000000000
318644812890625.000000000000000
20711912837890625.000000000000000
1346274334462890625.000000000000000
87507831740087890624.000000000000000
我尝试了以下选项,但都是徒劳的
1. data = floor( data +0.5) * i_data ;
2. data = floor( data +0.5) * floor (i_data + 0.5 ) ;
By declaring i_data as float .
3.
data = data * i_data ;
data …