Enter the mark of the student and calculate the grade

Enter the mark of the student

If the mark more than 60 'A' grade is alloted
if the mark is less than 60 'B' grade is alloted

#include <stdio.h>
int main()
{
    int x; //The variable is declared as integer
    char grade; //The variable is declared as character
    printf("Enter marks: ");
    scanf("%d",&x);//Input the mark
    grade=(x>60?'A':'B'); //Comparison operator is used
    printf("%c",grade); //Print the grade
}