1.How to make a function in C that accepts one input number and returns

a double number. The themes for the functions should be :

-Squares the number and returns the result. For example, if 12.1 was entered then 146.41 would be returned.
-Provide both your C code and an example call to the C code function.
-Please explain what the function is doing.
-Include header documentation in the code as well as internal code documentation.2.Write short program that uses a for loop to populate an array.

-The array can store up to 10 integers.
-Modify the code slightly to make a bug that would prevent the code from compiling or even better from running correctly.
-Describe what the code is designed to do.