Pseudorandom number sequence generation

[Classification]

Standard library

[Syntax]

#include <stdlib.h>

int rand(void);

[Return value]

Random numbers are returned.

[Description]

This function returns a random number that is greater than or equal to zero and less than or equal to RAND_MAX.

[Example]

#include    <stdlib.h>

void func(void) {

        if((rand() & 0xF) < 4)

                func1();    /*execute func1 with a probability of 25%*/

}