How to add random numbers

[naya22]

I am working on a math tutoring program that asks the user for a seed value, gives them two random numbers from 1 to 500, and asks them to key in the correct answer. So far, here is my source code:

#include <iostream>
#include <cstdlib>
#include <time>
#include <conio>
using namespace std;
int main()
{
        unsigned seed;
        int = rand();
        cout << "Enter a seed value: " ;
        cin  >> seed;
        srand(time(0));
        cout << rand()%500 <<endl;
        cout << rand()%500 <<endl;
        sum = rand() + rand(); 
        cout << "What are the sum of the two numbers? " ;
        cin  >> sum;
        getch();
        return 0;
}

However, I am so confused right now: I've feel as if I've hit a brick wall.
Here's my problem:

1. I have no idea how to check and see if the number that they input is the correct answer. (I know it has something to do with the if/else loop). Is there a variable that I have to use??
2. I don't know what formula to use to add the two random numbers up. I tried int num = rand at the suggestion of someone, but Ive deleted that part because I couldn't figure out where it went. :cry: I've even tried to declare rand() as an int variable, but all I got was an error message.

Please keep in mind that I am new at this C++, and I am here to learn. :eek: I type this program myself, I've read my textbook, and I still got stuck. Please help me. :sad:

[iamthwee]

conio.h is non standard, remove that and replace the getch() with cin.get()

And it should be <ctime> not <time>

[iamthwee]

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

using namespace std;
int main()
{
   unsigned seed;
   //int = rand();
   cout << "Enter a seed value: " ;
   cin  >> seed;

   srand ( time ( 0 ) );
   int one = rand() % 500;
   int two = rand() % 500;

   int sum = one + two;

   int herAnswer;
   cout << one << endl << two << endl;
   cout << "What are the sum of the two numbers? " ;
   cin  >> herAnswer;

   if ( herAnswer == sum )
   {
      cout << "you are correct";
   }
   else
      cout << "naya you are a dummy";
   cin.get();
cin.get();
   return 0;
}

[naya22]

No, I am not a dummy (LOL)

And thank you so much...for the scolding too on the other program. I am currently working on that one. When I get it, I'll come back and show you.

[WaltP]

Why are you asking for a seed value? And why are you not using it?

[Gheorghe_1]

Would be possible to have a program in C (not C++) that create and that add two random generated numbers?