C++ HW Help - How do you  get output to look like the image below?

Here's what I have so far:

#include<iostream>

using namespace std;

void getData(int[][12]);

double averageHigh(int[][12]);

double averageLow(int[][12]);

int indexHighTemp(int[][12]);

int indexLowTemp(int[][12]);

int main()

{

    int temp[2][12];

    cout << "Enter high temperature for each month\n";

    getData(temp);

    double avgH = averageHigh(temp);

    double avgL = averageLow(temp);

    int inH = indexHighTemp(temp);

    int inL = indexLowTemp(temp);

    cout << "\nAverage high temperature:\t" << avgH;

    cout << "\nAverage low temperature:\t" << avgL;

    cout << "\nHighest temperature:\t" << temp[0][inH];

    cout << "\nLowest temperature:\t" << temp[1][inL];

    return 0;

}

void getData(int a[2][12])

{

    for (int i = 0; i < 2; i++)

    {

        for (int j = 0; j < 12; j++)

        {

            cin >> a[i][j];

        }

    }

}