?? exit.c
字號:
# include <stdlib.h>
# include <stdio.h>
void main()
{
int month;
int day;
printf("please input the month number: ");
scanf("%d", &month);
switch (month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: day=31;
break;
case 4:
case 6:
case 9:
case 11: day=30;
break;
case 2: day=28;
break;
default: exit(0);
}
printf("1999.%d has %d days.\n", month, day);
}
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