1. #include<iostream>
2. using namespace std;
3. int main(){
4.  //write code here
5. int mark;
6. cout<< " Enter your mark to know your grade"<< endl ;
7. cin >> mark;
8. if (mark< 40) {
9.  cout<< "Sorry, You Failed ";
10. }
11. else if (mark >=40 && mark <=44 ){
12.  cout<<"Your letter grade is D and your grade point is 2.00";
13. }
14. else if (mark >=45 && mark <=49){
15.   cout<<"Your letter grade is D and your grade point is 2.25"  ;
16. }
17. else if (mark >=50 && mark<=54 ){
18.  cout<< "Your letter grade is C+ and your grade point is 2.50";
19.  }
20. else if (mark >=55 && mark<=59){
21.  cout<< "Your letter grade is B- and your grade point is 2.75";
22.  }
23. else if (mark >=60 && mark<=64 ){
24.  cout<< "Your letter grade is B and your grade point is 3.00";
25.  }
26. else if (mark >=65 && mark<=69 ){
27.  cout<< "Your letter grade is B+  and your grade point is 3.25";
28.  }
29. else if (mark >=70 && mark<=74 ){
30.  cout<< "Your letter grade is A- and your grade point is 3.50";
31.  }
32. else if (mark >=75 && mark<=79 ){
33.  cout<< "Your letter grade is A and your grade point is 3.75";
34.  }
35. else if (mark>= 80 && mark <=100){
36.  cout<< "Your letter grade is A+ and your grade point is 4.00";
37. }
38.  return 0;
39.  
40. }