Generate random number

A random number is such a number. Which produces a number in a range, with or without a range. Which is not constant but keeps on changing. For example.

Case A : WithIn Range
Range from 1 to 10
[3,8,1,9,6,2,6,7,2,...]
Note that random number may repeat when 
it's decided within the range.

Case B : Without Range
[6,-3. 8, 23323, 5634, 1246, 2133, .....]

Random number can be decimal and floating point or 
negative values. Its depends upon situations.

Write a program which return a random number within the range or without the range. You can use inbuilt function to reduce time complexity. Here mentioning few solutions in different programming language. Which is useful to generating a random number.

1) Generate random number in c 2) Generate random number in java 3) Generate random number in c++ 4) Generate random number in c# 5) Generate random number in ruby 6) Generate random number in scala 7) Generate random number in golang 8) Generate random number in python 9) Generate random number in php 10) Generate random number in vb.net 11) Generate random number in swift 12) Generate random number in node js