Constexpr ADC Temperature Table

#include <iostream>
using namespace std;

// Create constexpr lookup table here:
constexpr int TEMP_TABLE[]{
    -40,
    -10,
    20,
    50,
    80,
    120
};

int main() {
    int idx;
    cin >> idx;

    // Print the value from TEMP_TABLE based on idx
    cout << TEMP_TABLE[idx];

    return 0;
}

Solving Approach