How to come output 4 . can you please tell ?

Question

#include <iostream>
using namespace std;
int *fun(){
return new int[2];
}
int fun(int *p){
delete[]p;
return 0;
}
void fun(int *p,int q)
{ p[q]*=2;}
void fun(int *p,int q,int r){
p[q]=r;
}
int main(){
int *v=fun();
fun(v,0,1);
fun(v,1,2);
fun(v,0);
cout<<v[1]+v[0];
fun(v);
}

Answer 1

Line 1 : An array of size 2.
Line 2 : Element at Index 0 = 1.
Line 3 : Element at Index 1 = 2. Array is [1, 2]
Line 4 : Element at Index 0 is doubled. Array is [2, 2]
Line 5 : Sum of elements = 2 + 2 = 4 is printed.

Answer 2

@Anuj Kumar : The main() function in the program in your question.

Answer 3

can any body tell the program to find the gcd of n numbers entered by user (in CPP)

Answer 4

#include <iostream>
using namespace std;
int *fun(){
return new int[2];
}
int fun(int *p){
delete[]p; // how will this work
return 0;
}
void fun(int *p,int q)
{ p[q]*=2;}
void fun(int *p,int q,int r){
p[q]=r;
}
int main(){
int *v=fun();
fun(v,0,1); // ??
fun(v,1,2); //??
fun(v,0); // ???
cout<<v[1]+v[0]; ///??
fun(v);//??
}

Answer 5

krishna teja yeluylripati@ which program are you telling about ?

Answer 6

well it can be more simple