- You have a friend with a cause trying to raise $100K
- (S)he needs a program to track donations and stop accepting donations when the goal is reached
- (S)he would like the following information at the end:
- Total funds raised
- Total number of donations
- Average donation amount
- Maximum donation amount
- Minimum donation amount

- Follow the problem solving steps to design a solution
- Try simulating donations with a random number generator with values between $5 and $5000.

/* When your program doesn't have inputs, you should still find ways to test your code, perhaps by fixing certain values Input: goal=100000, donations=-150, 150000 (negative donation) Expected Output: total 149850 Actual: Input: goal=150, donations=155 (example of single donation exceeding goal) Expected Output: total, avg, min, max all equal 150, 1 donation Actual: Input: goal=150, donations = 75, 75 (two donations that equal exactly my goal) Expected Output: total = 150, avg = 75, min, max = 75, 2 donations Actual: Input: goal=150, donations=150 (example of single donation exactly meeting my goal) Expected Output: total, avg, min, max all equal 150, 1 donation Actual: Input: goal=0 Expected Output: program crashes Actual: */ #include <iostream> #include <iomanip> #include <ctime> using namespace std; const double GOAL = 100000; const double MAX_VAL = 5000; const double MIN_VAL = 5; int main() { cout << fixed << setprecision(2); double total_donations = 0; int count_of_donations = 0; double max_donation_so_far = 0; // Pick a small enough value that you know it will be immediately replaced as the max value double min_donation_so_far = 1000000000; // Pick a big enough value that you know it will be immediately replaced as the min value (MAX_VAL?) srand(time(0)); while (total_donations < GOAL) { // Record each donation (here it is generated as a random value) double donation_amount = (rand() * 1.0 / RAND_MAX) * (MAX_VAL - MIN_VAL) + MIN_VAL; cout << "Donation please: $" << donation_amount << endl; // Add up donation as you go total_donations = total_donations + donation_amount; count_of_donations++; // check if this is the max_donation_so_far if (donation_amount > max_donation_so_far) { max_donation_so_far = donation_amount; } if (donation_amount < min_donation_so_far) { min_donation_so_far = donation_amount; } // Repeat until sum is above 100K } // Output the summary from the program cout << "Congrats! You raised $" << total_donations << endl; cout << "There were " << count_of_donations << " donations" << endl; cout << "Average donation was $" << (total_donations / count_of_donations) << endl; cout << "Max donation was $" << max_donation_so_far << endl; cout << "Min donation was $" << min_donation_so_far << endl; system("pause"); return 0; }