# Thread: Need help with explaining how to set up a function using arrays

1. ## Need help with explaining how to set up a function using arrays

Hello, I'm wondering if anyone can run me through how to make the functions for b, c, d. if possible running through on how to would be more beneficial than just giving me the answer. Any explanation is appreciated.

Global warming.
As part of a global warming analysis, a research facility tracks outdoor temperatures at the North Pole
once a day, at noon, for a year. At the end of each month, these temperatures are entered into the
computer and processed. The operator will enter 28, 29, 30, or 31 data items, depending on the month.
You may use 500 as a sentinel value after the last temperature, since that is lower than absolute 0.
Your main program should call the read_temps(), hot_days(), and print_temps() functions described
here:

(b) Write a function, read_temps(), that has one parameter, an array called temps, in which to store
the temperatures. Read the real data values for one month and store them into the slots of an array.
Return the actual number of temperatures read as the result of the function.
(c) Write a function, hot_days(), that has two parameters: the number of temperatures for the current
month and an array in which the temperatures are stored. Search through the temperature array
and count all the days on which the noon temperature exceeds 32F. Return this count.
(d) Write a function, print_temps(), with the same two parameters plus the count of hot days. Print
a neat table of temperatures. At the same time, calculate the average temperature for the month
and print it at the end of the table, followed by the number of hot days.

2. Presumably, you're at least capable of doing

printf("Enter a temperature\n");
scanf("%f", &temperature);

If you are, then I suggest your first attempt at "b" would be an array and for loop in main.

After that, you read this -> A development process