Difference between revisions of "cpp/numeric/random/rand"
From cppreference.com
m (r2.7.3) (Robot: Adding es, fr, it, ja, pt, ru, zh) |
(→See also: +see c) |
||
| Line 37: | Line 37: | ||
{{dcl list begin}} | {{dcl list begin}} | ||
{{dcl list template | cpp/numeric/random/dcl list srand}} | {{dcl list template | cpp/numeric/random/dcl list srand}} | ||
| + | {{dcl list see c | c/numeric/random/rand}} | ||
{{dcl list end}} | {{dcl list end}} | ||
Revision as of 11:07, 15 June 2012
Template:cpp/numeric/random/sidebar
| Defined in header <cstdlib>
|
||
| int rand(); |
||
Returns a uniformly distributed pseudo-random integral value between 0 and RAND_MAX (0 and RAND_MAX included).
srand() should be called before any calls to rand() to initialize the random number generator.
Contents |
Parameters
(none)
Return value
Pseudo-random integral value between 0 and RAND_MAX.
Example
Run this code
#include <cstdlib> #include <iostream> #include <ctime> int main() { std::srand(time(0)); //use current time as seed for random generator int uniform_random_variable = std::rand(); std::cout << "Uniform random value on [0 " << RAND_MAX << "]: " << uniform_random_variable << '\n'; }
Possible output:
Uniform random value on [0 2147483647]: 1373858591
See also
| C documentation for rand
|
