/**
* 计算每年第一天是星期几的小程序
* 帮看一下什么地方有问题啊!*/
import java.util.Scanner;
public class F {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("请输入年份");
int year = sc.nextInt();
long sum = 0;
for(int i=1;i<=year;i++) {
int days;
if((i%4==0 && i%100!=0)||(i%400==0)) {
days = 366;
}else {
days = 365;
}
sum += days;
}
System.out.print(sum%7);
}
}
* 计算每年第一天是星期几的小程序
* 帮看一下什么地方有问题啊!*/
import java.util.Scanner;
public class F {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("请输入年份");
int year = sc.nextInt();
long sum = 0;
for(int i=1;i<=year;i++) {
int days;
if((i%4==0 && i%100!=0)||(i%400==0)) {
days = 366;
}else {
days = 365;
}
sum += days;
}
System.out.print(sum%7);
}
}
for(int i=1;i<=year;i++);应该是:
for(int i=1;i<=(year_1);i++);
你可以Calendar写的程序验证一下:import java.util.Calendar;
import java.util.Scanner;public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("请输入年份:");
int year = sc.nextInt();
Calendar ca = Calendar.getInstance();
ca.clear();
ca.set(year, 0,1);
int dayOfWeek =ca.get(Calendar.DAY_OF_WEEK);
switch(dayOfWeek)
{
case 1:System.out.println("星期日");break;
case 2:System.out.println("星期一");break;
case 3:System.out.println("星期二");break;
case 4:System.out.println("星期三");break;
case 5:System.out.println("星期四");break;
case 6:System.out.println("星期五");break;
case 7:System.out.println("星期六");break;
default:System.out.println("数据错误");break;
}
}
}