Http://hi.baidu.com/jkxtu1984/blog/item/d5d1f1c6e5ac461d9d163dec.html
The standard library (included in ) provides two functions to help generate pseudo-random numbers:
Function 1: int rand (void );Returns a random integer between [seed, rand_max (0
The C language uses the rand () function to implement random (int m), randrandom
The rand () function is a real random number generator, and srand () sets the random number seed for rand. If you did not call srand () before calling rand () for the
C + + usage of the rand () function in 2011-12-30 11:03:59| Category: c/c++| Report | font size SubscriptionOne, C + + cannot use the random () functionThe random function is not an ANSI C standard and cannot be compiled under a compiler such as
Rand ()Returns a random value ranging from 0 to RAND_MAX. Before calling this function to generate a random number, you must use srand () to set the random number seed. If no random number seed is set, rand () will automatically set the random
Rand and srand usageFirst, we need to have a general opinion on rand & srand: srand initializes random seeds, and rand generates random numbers. The following describes in detail.Rand (Random Number Generation)Header file: # includeDefine function:
If there is no srand () function and only RAND () function, the random numbers generated by each running program are the same. With the srand () function, the numbers generated each time are different.
In C ++, you can use the rand () function to
The standard library (included in ) provides two functions to help generate pseudo-random numbers:
Function 1: int rand (void );Returns a random integer between [seed, RAND_MAX (0x7fff) starting from the seed specified in srand (seed.
Function 2:
Usage of Rand and SrandFirst we have a general view of Rand&srand: Srand initializes random seeds, Rand produces random numbers, which are described in detail below.RAND (generating random numbers)Table header file: #include define function: int
Usage of Rand and SrandFirst we have a general view of Rand&srand: Srand initializes random seeds, Rand produces random numbers, which are described in detail below.RAND (generating random numbers)Table header file: #includedefine function: int rand
Http://www.cnblogs.com/lenient/articles/1565376.html
First we have a general view of Rand&srand: Srand initializes random seeds, Rand produces random numbers, which are described in detail below.
RAND (generating random numbers)
Table header file:
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