Question

java编写分段函数 y=x+1(x>0) y=0 (x=0) y=x (x<0)

Answer 1

//x接受屏幕输入，也可自定义数值
import java.util.Scanner;

public class Admin {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int x = in.nextInt();
int y
if (x >= 0) {
y = x+1;
} else if (x =0) {
y = 0;
}else{
y=x;
}
}
System.out.println(y);

}

Answer 2

if（x>0）{
y = x + 1;
}else if(x=0){
y = 0;
}else{
y = x;
}

Answer 3

y = x>0?x+1:x
或者
if(x>0)
y = x+1;
else
y = x;