{
int a,b;
printf("a为星期几，b为车牌尾号\n");
scanf("%d,%d",&a,&b);
switch(a)
{case 1:
switch(b)
{ case 2:
case 7:
printf("不可行驶\n");break;
default: printf("可行驶\n");
}
break;
case 2:
switch (b)
{
case 3:
case 8:
printf("不可行驶\n");break;
default:printf("可行驶\n");break;
}break;
case 3:
switch(b)
{
case 4:
case 9:
printf("不可行驶\n");break;
default:printf("可行驶\n");break;
}break;
case 4:
switch(b)
{
case 5:
case 0:
printf("不可行驶\n");break;
default:printf("可行驶\n");break;
}break;
case 5:
switch(b)
{
case 1:
case 6:
printf("不可行驶\n");break;
default:printf("可行驶\n");break;
}break;
default:printf("未知情况\n");break;
}
}
原文：http://www.cnblogs.com/YDshuaizai/p/5194824.html