Write a program that reads from the student user: his name as string (%s), his id as integer and his total marks in C programming course as float. Then store these information in student structure. After that, Calculate his letter grade in this course depending on the GRADING SCALE as follows:
• A = 90% - 100%
• B = 80% - 89%
• C = 70% - 79%
• D = 60% - 69%
• F = less than 60%