自考04747《java语言程序设计一》编程题全集50题及答案

入年:");    year=fymd.input();    System.out.print("输入月:");    month=fymd.input();    System.out.print("输入天:");    day=fymd.input();    if(year<0||month<0||month>12||day<0||day>31){    System.out.println("输入错误,请重新输入!");    e=1;    }    }while(e==1);     for(inti=1;i<month;i++){     switch(i){     case1:     case3:     case5:     case7:     case8:     case10:     case12:      days=31;     break;     case4:     case6:     case9:     case11:      days=30;     break;     case2:      if((year%400==0)||(year%4==0&&year%100!=0)){       days=29;      }else{       days=28;      }      break;     }     d+=days;     }    System.out.println(year+"-"+month+"-"+day+"是这年的第"+(d+day)+"天。");}}classinput{publicintinput(){    intvalue=0;    Scanners=newScanner(System.in);    value=s.nextInt();    returnvalue;}}