Program takes grade as input and comments according to it

Program takes grade as input and comments according to it 

#include  
int main () 
{ 
 char grade ;
 printf("Enter Your Grade: ");
 scanf("%c", &grade); /*Input grade */ 
 
 switch(grade) /*examine value in grade*/ 
 { 
   case 'A' : /* check if grade is equal to ‘A’*/ 
   printf("Excellent work!\n" ); 
   break; 
   
   case 'B' : /* check if grade is equal to ‘B’*/ 
   printf("Good Job!\n" ); 
   break; 
   
   case 'C' : /* check if grade is equal to ‘C’*/ 
   printf("Well done\n" ); 
   break; 
   
   case 'D' : /* check if grade is equal to ‘D’*/ 
   printf("You passed\n" ); 
   break; 
   
   case 'F' : /* check if grade is equal to ‘F’*/ 
   printf("Better try again\n" ); 
   break; 
   
   default : /*if no case matches run default block*/ 
   printf("Invalid grade\n" ); 
 } 
 return 0; 
 }