8Distributions can be parametrized by defining appropriate parameters. For example,
uniform_real_distribution<double> drandom(
,
) produces numbers in the 
interval, normal_distribution <double> gaussran(
,
) produces numbers distributed
according to ![exp[− (x− μ)2∕(2σ2)]∕(σ√2π)](main_latex4183x.png)
etc. If the parameters are omitted, then they take
default values (here 
=0, 
=1, 
=0, 
=1)