Changing Number to Letter Grades

I am trying to figure out why I cannot get the number to change to a letter. There seems to be something I am missing when returning the char function to the main function, but I cannot figure it out. When I print it, it will not print out the letter. I would really appreciate some guidance.

#include<stdio.h>
#include<stdlib.h>

char findLetter(int grade);

int main()
{
   int score; //taken as user input
   int grade;

   printf("\tEnter your numberical grade: ");
   scanf("%i", score);

   findLetter(grade);

   printf("Your grade is a %i", grade);



   return 0;
}


char findLetter(int grade)
{
  switch(grade/10) 
  {
    case 10:
    {
        return 'A';
        break;
    }
    case 9:
    {
        return 'A';
        break;

    }
    case 8:
    {
        return 'B';
        break;
    }
    case 7:
    {
        return 'C';
        break;
    }
    case 6:
    {
        return 'D';
        break;
    }
    case 5:
    {
        return 'D';
        break;
    }
  return grade;
  }
}

>Solution :

You have not stored the result of findLetter(grade). Change it to:

int main()
{
   int score; //taken as user input
   char grade;

   printf("\tEnter your numberical grade: ");
      scanf(" %d", &score);

      grade = findLetter(score);

      printf("Your grade is a %d", grade);

      return 0;
   }

Also in the function char findLetter(int grade) you are returning grade which is an int, may be change it to

return 'E';