Uhm. Some help with the C++ random number generator.?

Question

Hi there, I just need abit of troubleshooting for this code.

#include <cstdlib>

#include <ctime>

#include <iostream>

int main()

{

srand((unsigned)time(0));

int random_integer;

for(int index=0; index<20; index++){

random_integer = (rand()%10)+1;

cout << random_integer << endl;

}

}

Can I ask what's wrong with this code, people?

It keeps telling me that cout and endl are undeclared

indentifiers, which doesn't make sense to me :(

Answer 1

instead you can try &quot; cout&lt;&lt;rand(); &quot;

#include &lt;cstdlib&gt;

#include &lt;ctime&gt;

#include &lt;iostream&gt;

int main()

{

cout&lt;&lt;rand();

}

Answer 2

OK

your program is almost good. but if you want cout and endl  to work you need to say std::cout instead of just cout.

an easier way to do it is to just go a line above the start of your main function and add using namespace std;

but thats not it. you need to have a return value for your main function. just before the end of the main function add return 0; and your program should work.

then there might be another problem. depending on the compiler you are using, you might just see a flash of a console. in order to make the console stay so you can read your random numbers, you need to add a statement like this just before your return statement.

char f;

cin&gt;&gt;f ; (if you chose to write using namespace std; on top of the program, or else you should say std::cin&gt;&gt;f)

at the end your program should look like this:

#include &lt;cstdlib&gt;

#include &lt;ctime&gt;

#include &lt;iostream&gt;

using namespace std;

int main()

{

srand((unsigned)time(0));

int random_integer;

for(int index=0; index&lt;20; index++){

random_integer = (rand()%10)+1;

cout &lt;&lt; random_integer &lt;&lt; endl;

}

char f ;

cin&gt;&gt;f ;

return 0;

}

I hope that didnt confuse you.

good luck