说明：  均匀分布伪随机数发生器 伪随机数在计算机软件设计中有很广泛的用途。本文介绍了基于数学方法的利用计算机产生伪随机数的一种方法，即线性同余法，任何伪随机数的产生都是运用递推的原理来生成的。以及在Visual C++环境中产生伪随机数的两个重要函数，rand和srand函数，正确地使用这两个函数是产生性能良好的伪随机数的关键
(Uniformly distributed pseudo-random number generator, pseudo-random number in the computer software design in a very wide range of functions. This paper introduces the mathematical methods based on the use of computer generated pseudo-random number in a way that the linear congruence method, any pseudo-random number generated is to use the principle of recursive generated. As well as in Visual C++ Environment pseudo-random number generated two important functions, rand and srand functions, proper use of these two functions is the good performance of the pseudo-random number key)