What does Srand does? Explain with example

Answer 1

srand generates your random seed. typically you use srand (time (NULL)) Which will seed it to the current time of the cpu to generate a new unique number

Answer 2

#include <cstdlib>
#include <ctime>
#include <iostream>

using namespace std;

int main() {
srand(time(NULL));
int x = rand ()% 10 + 1;//generates a number from 0->9 then adds 1

return 0;
}

Answer 3

<?php
//seed with micro second
Function make_seed()
{List($usec, $sec) =explode(' '
, microtime());
return $sec + $usec* 1000000;
}
Srand(make_seed());
$randval=rand();
? >