#include <stdio.h>
#include <stdlib.h>
int main(void)
{
char grade;
printf("Input grade:%c\n",grade
);
switch(grade)
{
case 'a':
case 'A':
break;
case 'b':
case 'B':
break;
case 'c':
case 'C':
break;
default:
}
return 0;
}
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