++在后：先赋值再自身加1
++在前：先自身加1再赋值
1.What is i printed? A
public class Test {
public static void main(String[] args) {
int j = 0;
int i = ++j + j * 5;
System.out.println("What is i? " + i);
}
}
A.6
B.1
C.0
D.5
2.What is y displayed in the following code?D
public class Test {
public static void main(String[] args) {
int x = 1;
int y = x++ + x;
System.out.println("y is " + y);
}
}
A.y is 2.
B.y is 1.
C.y is 4.
D.y is 3.
3.What is i printed in the following code?C
public class Test {
public static void main(String[] args) {
int j = 0;
int i = j++ + j * 5;
System.out.println("What is i? " + i);
}
}
A.0
B.6
C.5
D.1
4.What is y displayed?B
public class Test {
public static void main(String[] args) {
int x = 1;
int y = x + x++;
System.out.println("y is " + y);
}
}
A.y is 3.
B.y is 2.
C.y is 4.
D.y is 1.
