1 ，基本的選擇語(yǔ)句的使用switch
int score;
while(score != 100){//放到下面的
printf("輸入你的分?jǐn)?shù):\n");
scanf("%d",&score);
if(score < 0 || score > 100){
printf("你輸入的分?jǐn)?shù)不合法:\n");
continue;//結(jié)束本次循環(huán)瞒爬，進(jìn)行下一次的循環(huán)
}
else {
int rank = (int)score/10;
switch(rank){
case 9: printf("your rank is A");
break;
case 8: printf("your rank is B");
break;
case 7: printf("your rank is C");
break;
case 6: printf("your rank is D");
break;
default: printf("your rank is E");
}
}
}
return 0;
