C++生成-1到1之间的随机小数

#include <random>#include <iostream>#include <ctime>

int main(int argc,char *argv[]) {
   //Type of random number distribution  
   std::uniform_real_distribution<double> dist(-1.0, 1.0);  //(min, max)   
   //Mersenne Twister: Good quality random number generator    
   std::mt19937 rng;   
   //Initialize with non-deterministic seeds    
   rng.seed(std::random_device{}());    
   cout<<"wb:";   
   for(int i=0;i<5;i++){      
      wb[i]=dist(rng);       
      cout<<wb[i]<<" ";   
     }    
   cout<<endl;
   return 0;
  }
运行结果：