[FIXED] How to find the product of vector elements?

Issue

I have the following vector values: [2, 3, 7].

I want to output the product of the vector, as in 2*3*7 = 42.

I wrote some code for it but it doesn't appear to be working. I am new to C++, so I am not sure how to get the product of the values in a vector given any numeric vector of any size.

#include <bits/stdc++.h>

int main()
{
    int n;
    cin >> n;
    vector<int> vec;
    while (n--) 
    {
        int temp;
        cin >> temp;
        vec.push_back(temp);
    }
    int total = 1;
    total *= vec;
    cout << vec << endl;
    return 0;
}

Solution

If you want to get the product of any numeric vector of any size, here's a function that works with any numeric type of vector with the help of templates:

template <class any>
long double vectorProduct(vector<any> vec) {
  long double total = 1;

  for(any num : vec) {
    total *= num;
  }

  return total;
}

Usage:

cout << vectorProduct(vec) << endl;

Answered By - Mystical

Answer Checked By - Mildred Charles (PHPFixing Admin)