File handling

1. Write a C program using functions to find the smallest of the given three numbers.
2. Explain how structures are different from arrays. 3. Describe the concept of pointers with the help of an example. 4. What are the different functions related to file handling in C?5. Which of the following functions is related to fi le handling in C?

A. fopen B. fclose C. fgetc D. All of the above