C语言 7.0

今天来讲switch语句的应用；
如有偏颇，还望海涵；
int main()
{
int iDay;
printf("enter a day of week to get cours\n");
scanf("%d",iDay);

            switch(iDay)
            {
                 case 1:
                     printf("have a meeting in my company\n");
                     break;
                     case 2:
                     case 3:
                     case 4:
                     case 5:
                     printf("working with partner\n");
                     case 6:
                     printf("go shopping with friends\n");
                     case 7:
                     printf("at home with families\n");
                     default:
                     printf("you enter is wrong\n");
                }
            return 0;

}
//switch和if语句各有千秋，在语句少的情况下，进行if语句，switch语句在多条条件下用，当然也可以进行穿插使用；举个例子；

int main()
{
int iDay,iMonth;
printf("please the month you want to kow day\n");
scanf("%d",&iMonth);
switch(iMonth)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
iDay=31;
break;
case 4:
case 6:
case 9:
case 11:
iDay=30;
break;
case 2:
iDay=28;
break;
default:
iDay=-1;
break;
}
if(iDay==-1)
{
printf("the enter is wrong\n");
}
else
{
printf("2021.%d month have %d day\n",iMonth,iDay);
}
return 0;
}
使用switch语句和if语句，可以完成简化；当然练习更关键；
在switch语句中众多case是平级的，一起进行；