当a为正数时,请将以下语句改写成switch语句：if(a

Question

当a为正数时,请将以下语句改写成switch语句：
if(a

Answer 1

a=a/10;
switch(a)
{
case 0:
case 1:
case 2:
m=1;
break;
case 3:
m=2;
break;
case 4:
m=3;
break;
case 5:
m=4;
break;
default:
m=5;
break;
}