Write a code in any language for following output

Question

write a program for Getting raw data from the user as an input like "Roll No", "name", "Subject", "Marks". & print this data on the basis of categories of subject.

E.g. User inputs the data for 4 students,
1 abc sub1 50
2 qwe sub2 46
3 ghj sub3 98
4 lkj sub1 43

then the o/p of program should be

sub1:
1 abc 50
4 lkj 43

sub2:
2 qwe 46

sub3:
3 ghj 98

Answer 1

https://code.sololearn.com/c9gJ01I6Pyz0/?ref=app

Answer 2

I am not about to write code for you. Have you tried doing this yourself yet? To help you I need to see your attempt then I will help you.