I'm having trouble understanding this

I am trying to finish up my homework but I don't really understand the question


Consider the array temps that the following statements define:

typedef double WeekType[DAY_PER_WEEK];
typedef WeekType YearType[WEEKS_PER_YEAR];
YearType temps;

temps[12] is a one-dimensional array of seven real numbers. Suppose that you want to compute the average of these seven numbers by calling a function average. Write the function average so that average(temps[12]) returns the desired average

Here is a sample code that I've started with. Tell me if im on the right track. thanks

int average(temps[12]){
for(int index = 0, total = 0; index > 11; i++){
total += temps[index];
}
return average = total/index;
}