Question

第五题，要用选择语句做

Answer 1

#include <stdio.h>
void main()
{
int mark;
scanf("%d", &mark);
if(mark>100||mark<0)
{
printf("input error!");
return;
}
switch (mark / 10)
{
case 9:
case 10:
printf("excellent\n");
break;
case 6:
case 7:
case 8:
if(mark<80){
printf("middle\n");
}else{
printf("good\n");
}

break;
default:
printf("bad\n");
break;
}
}