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#include

void uh() //判断周二还是周三

{ char sec;

printf("请继续输入：\n");

bq:scanf("%c",&sec);

if(sec=='u'||sec=='U')

printf("It is Tuesday!\n");

else if(sec=='H'||sec=='h')

printf("It is Thursday!\n");

else

{

goto bq;

}

}

void au()//判断周六还是周日

{ char sec;

printf("请继续输入：\n");

bq:scanf("%c",&sec);

if(sec=='a'||sec=='A')

printf("It is Saturday!\n");

else if(sec=='u'||sec=='U')

printf("It is Sunday!\n");

else

{

goto bq;

}

}

void main()

{

char fir;

printf("请输入字母：");

bq:scanf("%c",&fir);

switch(fir)

{

case 'm':

case 'M':printf("Monday\n");break;

case 't':

case 'T':printf("Tuesday,Thursday?\n");

uh();

break;

case 'w':

case 'W':printf("Wendnesday\n");break;

case 'f':

case 'F':printf("Friday\n");break;

case 's':

case 'S':printf("Saturday,Sunday?\n");

au();

break;

default :goto bq;

}

}