案例:减肥计划(if语句)
import java.util.Scanner;
public class HelloWorld {
public static void main(String[] args) {
System.out.println("请输入一个星期数");
Scanner sc = new Scanner(System.in);
int week = sc.nextInt();
if (week == 1) {
System.out.println("星期一:跑步");
} else if (week == 2) {
System.out.println("星期二:游泳");
}else if (week == 3) {
System.out.println("星期三:慢走");
}else if (week == 4) {
System.out.println("星期四:动感单车");
}else if (week == 5) {
System.out.println("星期五:拳击");
}else if (week == 6) {
System.out.println("星期六:爬山");
}else if (week == 7) {
System.out.println("星期日:好好吃一顿");
}else{
System.out.println("您输入的星期数有误");
}
}
}