void (*signal(int sig, void (*func)(int)))(int);If the value of func is SIG_IGN then . . . . . . . .

int func(int);double func(int);int func(float);

#include <stdio.h>int func (int a){ int b; return b;}int main(){ int c; func (c);}int d;

#include <stdio.h>void first(){ printf("first");}void second(){ first();}void third(){ second();}void main(){ void (*ptr)(); ptr = third; ptr();}

A. public class Circle implements Shape { private int radius; }B. public abstract class Circle extends Shape { private int radius; }C. public class Circle extends Shape { private int radius; public void draw(); }D. public abstract class Circle implements Shape { private int radius; public void draw(); }E. public class Circle extends Shape { private int radius; public void draw() { /* code here */ } }F. public abstract class Circle implements Shape { private int radius; public void draw() { /* code here */ } }