#include <cs50.h>
#include <ctype.h>
#include <stdio.h>
float calc_hours(int hours[], int weeks, char output);
int main(void)
{
int weeks = get_int("Number of weeks taking CS50: ");
int hours[weeks];
for (int i = 0; i < weeks; i++)
{
hours[i] = get_int("Week %i HW Hours: ", i);
}
char output;
do
{
output = toupper(get_char("Enter T for total hours, A for average hours per week: "));
}
while (output != 'T' && output != 'A');
printf("%.1f hours\n", calc_hours(hours, weeks, output));
}
// TODO: complete the calc_hours function
float calc_hours(int hours[], int weeks, char output)
{
}

This part of the implementation details is confusing me:

" To complete calc_hours , first total up the hours saved in the array into a new variable. Then, depending on the value of output , return either this sum, or the average number of hours."