Question

Write a function named “compileStats” that has 4 parameters: a vector of integers, an integer representing the smallest value contained in the vector, an integer representing the largest value contained in the vector, and a double that represents the average of the values in the vector. The compileStats function will not “return” a value, it will set the Pass By Reference parameters to the correct values (smallest, largest, and average).

Use the following main function in driver1b.cpp as a starting point for testing your function.

int main() {

int min = 0;

int max = 0;

double avg = 0.0;

vector<int> test1{ 12, 15, 543, 1024 };

compileStats(test1, min, max, avg);

cout << "For test 1: " << min << " " << max << " " << avg << endl;

vector<int> test2{ -8 };

compileStats(test2, min, max, avg);

cout << "For test 2: " << min << " " << max << " " << avg << endl;

vector<int> test3{ -40, 39, -39, 40, 38, -38, 0, 0 };

compileStats(test3, min, max, avg);

cout << "For test 3: " << min << " " << max << " " << avg << endl;

}

// You may not use any “built-in” C++ classes other than iostream and vector.

Answer 1

/*
 *  C++ Program to find out min max average
 */

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

void compileStats(vector<int> vec, int &min, int &max, double &avg);

int main()
{  
  int min = 0;
  int max = 0;
  double avg = 0.0;
  
  vector<int> test1{12, 15, 543, 1024};
  compileStats(test1, min, max, avg);
  cout << "For test 1: " << min << " " << max << " " << avg << endl;
  
  vector<int> test2{-8};
  compileStats(test2, min, max, avg);
  cout << "For test 2: " << min << " " << max << " " << avg << endl;
  
  vector<int> test3{-40, 39, -39, 40, 38, -38, 0, 0};
  compileStats(test3, min, max, avg);
  cout << "For test 3: " << min << " " << max << " " << avg << endl;
  
  return 0;
}

void compileStats(vector<int> vec, int &min, int &max, double &avg)
{
  int sum = 0;
  min = vec[0];
  max = vec[0];

  for (int i = 0; i < vec.size(); i++)
  {
    if (min > vec[i])
      min = vec[i];
    
    if (max < vec[i])
      max = vec[i];
    
    sum += vec[i];
  }

  avg = (double)sum/vec.size();
}

/*  Program ends here */