// Torrez, Elaine                         CS1A                     Chapter 3 P. 146, #15
 
/******************************************************************************************
 *
 * CREATE MATH TUTOR PROBLEM
 *
 * --------------------------------------------------------------------------------
 * This program generates two random numbers and displays them as an addition
 * problem for the student to solve. The student presses Enter to see the solution.
 * --------------------------------------------------------------------------------
 *
 * INPUT
 *      (Press Enter key to check answer)
 *
 * OUTPUT
 *      num1      : First random number
 *      num2      : Second random number
 *      total     : Correct sum (num1 + num2)
 *
 *******************************************************************************************/
 
#include <iostream>
#include <cstdlib>   // For rand() and srand()
#include <ctime>     // For time() to seed random generator
using namespace std;
 
int main ()
{
    int num1;    // First random number
    int num2;    // Second random number
    int total;   // Correct sum
 
    // Seed random number generator
    srand(time(0));
 
    // Generate two random numbers between 100 and 999
    num1 = rand() % 900 + 100;
    num2 = rand() % 900 + 100;
 
    // Calculate total
    total = num1 + num2;
 
    // Display the problem
    cout << "  " << num1 << endl;
    cout << "+ " << num2 << endl;
    cout << "------" << endl;
 
    // Pause until student presses Enter
    cin.get();
 
    // Show the answer
    cout << "  " << total << endl;
 
    return 0;
}
 

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