check if a file opened

close a file

read from a file with fscanf$()$

write to a file with fprintf $()$

The File Handling Benchmark will be like the $2$D Array Benchmark in that you will be given a code template and asked to pick the correct lines of code from a list of correct and incorrect code lines.

Here's is a sample program for your reference. Some of the code lines are actual code and others are comments stating what the code should be$.$ This should not be memorized $($hence the reason for part of the actual code being comments instead$)$ this should be understood so that you can choose the correct lines of code from the quiz and put them into the correct order.

#include $[20]=\{\}[20]=\{\}***={?}^{**}$OFH$=r+$