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srand

Same result although using "srand" (gcc)

In next code I've same result everytime although using "srand" and followed instructions of the next link rand() and srand() in C/C++:

#include <iostream>
#include <cstdlib>

using namespace std;

int main(void)
{

int i, x;


srand(5);

for(i=1;i<=10;++i)
{

x=rand()%5;
cout << x << endl;

}
return 0;
}
Solution

  • The reason you are getting the same result is that you are always passing the same value (5) to srand.

    As the linked page notes, srand(time(0)) is a common way to get the seed to vary.