C++ programming question (file I/O)

first, read the input.txt file and list all students name (char/string), score(subject1,2,3).

second, calculate the averages of each student's score.

final, generate a "output.txt" file.

100 59 100 30 95 98 66 70 50 60 95 99 subject2 99 70 50 60 95 subject3 rank subjectl 100 name avg 99 65 66.6667 3 60 96.3333 2 100 30 95 Fig. el input and output file Notice : heade a151 3