(1) Reads from the file “hw4.txt” in the local directory the SID (which is a string) and the scores (which are integers) of each student in a class. Although the number of students and the number of scores of each student are not known in advance, you may assume that:
§ All students have the same number of scores;
§ The total number of students is less than or equal to 10;
§ The number of scores...