 
 
 
2.7.4  Random integers : rand
rand takes as argument an integer n or no argument.
- 
rand(n) returns a random integer p such that 0 ≤ p<n.
 Input :rand(10) Output for example :8 
- rand() returns a random integer p such that 0 ≤ p<231 
(or on 64 bits architecture 0 ≤ p<263).
 Input :rand() Output for example :846930886 
 
 
