Convert the following C code into bash shell program. Do not use if.

#include

int main () {

/* local variable definition */

char grade = 'B';

switch(grade) {

case 'A' :

printf("Excellent! " );

break;

case 'B' :

case 'C' :

printf("Well done " );

break;

case 'D' :

printf("You passed " );

break;

case 'F' :

printf("Better try again " );

break;

default :

printf("Invalid grade " );

}

printf("Your grade is %c ", grade );

return 0;

}