File I/O

2020T2 Q6 · Count the valid ASCII bytes in a file

2020T3 Q5 · Copy a file but drop the last n bytes

2020T3 Q6 · Count the total set bits in a file

2022T2 Q5 · Print the first n bytes, or all but the last |n| bytes

2022T3 Q6 · Delete the n-th line of a file