By using C

Write a program based on the following grading criteria: Mark Letter Grade 80-100 A 60-79 B 50-59 C 40-49 D below 40 F Read integer marks ranging from 0 to 100, one at a time. Stop when the user enters 999. Calculate and display the number of students who have obtained A, B, C, D and F. Sample output: Enter marks:78 The corresponding grade is B Enter marks:90 The corresponding grade is A Enter marks:90 The corresponding grade is A Enter marks:999 Invalid. Analysis: 2 student(s) obtain A 1 student(s) obtain B e student(s) obtain C e student(s) obtain D e student(s) obtain F Do you want to continue: YES - Y or NO N: Y Enter marks:78 The corresponding grade is B Enter marks:65 The corresponding grade is B Enter marks:999 Invalid. Analysis: e student(s) obtain A 2 student(s) obtain B e student(s) obtain C e student(s) obtain D e student(s) obtain F Do you want to continue: YES - Y or NO - N: n Press any key to continue