c questions 9 – www.savvyessaywriters.net

What is the output of this program?

```
    #include <iostream>
```
```
    using namespace std;
```
```
    void copy (int& a, int& b, int& c)
```
```
    {
```
```
        a *= 2;
```
```
        b *= 2;
```
```
        c *= 2;
```
```
    }
```
```
    int main ()
```
```
    {
```
```
        int x = 1, y = 3, z = 7;
```
```
        copy (x, y, z);
```

        cout << "x =" << x << ", y =" << y << ", z =" << z;

```
        return 0;
```
```
    }
```

a) 2 5 10
b) 2 4 5
c) 2 6 14
d) none of the mentioned

What is the new value of x?

```
    #include <iostream>
```
```
    using namespace std;
```
```
    void fun(int &x)
```
```
    {
```
```
        x = 20;
```
```
    }
```
```
    int main()
```
```
    {
```
```
         int x = 10;
```
```
         fun(x);
```

         cout << "New value of x is " << x;

```
         return 0;
```
```
    }
```

a) 10
b) 20
c) 15
d) none of the mentioned

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