Why does my function rand() return the same number all the time?

Question

#include <iostream>
#include <cstdlib>
using namespace std;

int main() {
cout << rand();
}

Answer 1

.... the seed is the same every time.. of course the results of rand will be the same.

What happens if you provide a unique seed each time you execute the program. Say with providing the current time as a seed.

Here is some information which may help with your understanding.

Hope it helps

http://www.cplusplus.com/reference/cstdlib/srand/

Answer 2

You are welcome Alexander. I will also be re-examining this section of the course as you are definitely not the first person to ask this after completing this section. I would like to see if I could suggest any improvements to the explanation they provide.

If you have any further doubts or confusion please do not hesitate to ask

Answer 3

re-examine the course *functions | rand () function*

You will see that srand() is required to be used in conjunction with rand().

Answer 4

Thank you so much for attention jay!

I'll sort this out

Answer 5

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

int main() {
srand(time(nullptr));
for (int i = 0; i< 10; ++i) {
cout << rand() % 10 + 1 << endl;
}

return 0;
}

Answer 6

thanks for answer jay, but i got a similar situation with srand() function..
Explain please why in this code i got similar numbers again?

int main () {
srand(98);
for (int x = 1; x <= 10; x++) {
cout << 1 + (rand() % 6) << endl;
}
}

Answer 7

I have only 41 in all attempts to run this code.. :-/