#include <stdio.h>

typedef float Temperature;
typedef int Matrix[20][20];

int main() {
    Temperature readings[3] = {22.5, 24.0, 23.5};

    // compute average temperature
    Temperature sum = 0;
    for (int i = 0; i < 3; i++) {
        sum += readings[i];
    }
    Temperature average = sum / 3;

    printf("Average temperature: %.2f\n", average);

    // store rounded readings in a matrix
    Matrix data = {0};   // initialise everything to 0

    for (int i = 0; i < 3; i++) {
        data[0][i] = (int) readings[i];  // convert float to int
    }

    printf("Matrix first row: %d %d %d\n",
           data[0][0], data[0][1], data[0][2]);

    return 0;
}