#include<iostream> 
using namespace std; 
 
int main () 
{
    int marks; 
    string name, grade; 
  
  
 cout << "Please enter your name: "; 
 cin >> name; 
 cout << "Please enter your marks: "; 
 cin >> marks; 
  
 switch (marks) 
 { 
  case 90 ... 100 : grade = "A+"; 
       break; 
  case 80 ... 89 : grade = "A"; 
       break; 
  case 75 ... 79 : grade = "A-"; 
       break; 
  case 70 ... 74 : grade = "B+"; 
       break; 
  case 65 ... 69 : grade = "B"; 
       break; 
  case 60 ... 64 : grade = "B-"; 
       break; 
  case 55 ... 59 : grade = "C+"; 
       break; 
  case 50 ... 54 : grade = "C"; 
       break; 
  case 45 ... 49 : grade = "C-"; 
       break; 
  case 40 ... 44 : grade = "D"; 
       break; 
  case 0 ... 39 : grade = "F"; 
       break; 
 } 
  
 cout << "Your Name: " << name << endl; 
 cout << "Your marks: " << marks << "%" << endl; 
 cout << "Your grade: " << grade; 
 
return 0; 
}