Generating a random double between a range of values

Question

Im currently having trouble generating random numbers between -32.768 and 32.768. It keeps giving me the same values but with a small change in the decimal field. ex : 27.xx

Answer 1

Also, If you are not using c++ 11 you can use the following function instead:

double randDouble(double precision, double lowerBound, double upperBound) {
 double random;
 random = static_cast(((rand()%(static_cast(std::pow(10,precision)*(upperBound - lowerBound) + 1))) + lowerBound*std::pow(10,precision)))/std::pow(10,precision);
 return random;
}