c++ - How to fill an array with random floating point numbers? -

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i'm hoping find way fill array random floating point numbers. array size 50 , i'm hoping fill array random float numbers range 1-25. here have far. appreciate tips or answers can offer. thank you. 

#include <iostream>  #include <ctime>  #include <cstdlib>  using namespace std;   int main()  {  float myarray[50];   for(int = 1; <= 25; i++)  {  srand(time(0));   myarray[i] = (rand()% 50 + 1);  cout << myarray[i] << endl;    system("pause");  return 0;  }   }

if c++11 not option, can use rand, dividing result rand_max constant casted float obtain uniform distribution of floats in range [0, 1]; can multiply 24 , add 1 desired range:

myarray[i] = rand()/float(rand_max)*24.f+1.f;

by way, other observed, move srand out of loop - rng seed (normally) must initialized once.

(notice dividing rand_max give distribution includes right extreme of interval; if want exclude it, should divide e.g. rand_max+1)

of course, resulting distribution original rand() distribution (both in randomness , in granularity); typically lcg , granularity of @ least ~0.0007 (guaranteed standard, , vc++ , other compilers provide). if need better random numbers, should follow advices posted in other answers (the default mersenne twister generator in c++11 provides better randomness , way bigger guaranteed range).


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