#include <stdio.h>
int main(void)
{
int res;
printf("成績を入力してください。(1~5)\n");
switch(res){
case 1:
case 2:
break;
case 3:
case 4:
break;
case 5:
break;
default:
printf("1~5までの成績を入力してください\n"); break;
}
return 0;
}
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