#include <iostream>
 
using namespace std;
 
int main()
{
  int grade;
  cout << "Please enter the marks to find the grade" << endl;
  cin >> grade;
  if(grade >=90)
  {
    cout << "student has got a grade A" << endl;
  }
    else if(grade >= 80)
    {
      cout << "student has got a grade B" << endl;
     }
     else if(grade >= 70)
    {
      cout << "student has got a grade C" << endl;
     }
     else if(grade >= 60)
    {
      cout << "student has got a grade D" << endl;
     }
      else
      {
      cout << "student has got F"<< endl;
      }
 return 0;
}

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OTA=

90