What is the output of the following C program?

 Is the following statement True or False? 

In C variable type cannot be changed once it is declared.

What is the output of the following C program?

#include <stdio.h>

int main()

{

unsigned int a = 10;

a = ~a;

printf("%d\n", a);

}

 What is the output of this C code?

    void main()
    {
      int x;
    }


 here x is? 

The C library function exit() causes an exit from:

Which of the following are automatically added to every C++ class if we do not write our own?

How can you access the global variable when there is a local variable with the same name?

What will be the output of the following C++ code?

#include <stdio.h> 

#include <ctype.h>

int main ()

{

int i = 0;

char str[] = "C";

while (str[i])

{

if (isalpha(str[i])) 

printf ("alphabetic");

else 

printf ("not alphabetic");

           i++;

}

return 0;

}

What will be the output of the following C++ code?

1. #include <iostream>
2. using namespace std;
3. void swap(int &a, int &b);
4. int main()
5. {
6. int a = 5, b = 10;
7.        swap(a, b);
8. cout << "In main " << a << b;
9. return 0;
10. }
11. void swap(int &a, int &b)
12. {
13. int temp;
14.        temp = a;
15.        a = b;
16.        b = temp;
17. cout << "In swap " << a << b;
18. }